Monday, December 12, 2011

Full Set CCNA Final Test

01. When connectionless protocols are implemented at the lower layers of the OSI model, what is usually used to acknowledge that the data was received and to request the retransmission of missing data?

  • IP
  • UDP
  • Ethernet
  • a connectionless acknowledgement
  • an upper-layer, connection-oriented protocol or service

02. Refer to the exhibit. Each media link is labeled. What type of cable should be used to connect the different devices?

  • Connection 1 – rollover cable
    Connection 2 – straight-through cable
    Connection 3 – crossover cable
  • Connection 1 – crossover cable

  • Connection 2 – rollover cable
    Connection 3 – crossover cable

  • Connection 1 – straight-through cable
    Connection 2 – crossover cable
    Connection 3 – crossover cable
  • Connection 1 – straight-through cable
    Connection 2 – crossover cable
    Connection 3 – straight-through cable
  • Connection 1 – crossover cable
    Connection 2 – straight-through cable
    Connection 3 – crossover cable

03. Which OSI layer does IP rely on to determine whether packets have been lost and to request retransmission?

  • application
  • presentation
  • session
  • transport

04. Refer to the exhibit. What is the correct destination socket number for a web page request from Host A to the web server?

  • 00-08-a3-b6-ce-46
  • C is directly connected, FastEthernet0/0

05. A PC can not connect to any remote websites, ping its default gateway, or ping a printer that is functioning properly on the local network segment. Which action will verify that the TCP/IP stack is functioning correctly on this PC?

  • Use the ipconfig /all command at the host’s command prompt.
  • Use the ping command at the command prompt.
  • Use the traceroute command at the command prompt to identify any failures on the path to the gateway.
  • Use FTP to check for connectivity to remote sites.
  • Download a troubleshooting tool from the PC manufacturer’s website.

06. Which type of media is immune to EMI and RFI? (Choose two.)

  • 10 Base-T
  • 10 Base-2
  • 10 Base-5
  • 100 Base-FX
  • 100 Base TX
  • 1000 Base LX

07. Refer to the exhibit. The command that is shown was issued on a PC. What does the IP address represent?

  • IP address of the host
  • default gateway of the host
  • IP address of the homepage for the host
  • primary domain name server for the host
  • IP address of the website resolver1.mooki.local

08. Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below that correctly identifies the component or protocol used at each numbered stage of the diagram.

  • 1.MUA 2.MDA 3.MTA 4.SMTP 5.MTA 6.POP 7.MDA 8.MUA
  • 1.MUA 2.POP 3.MDA 4.SMTP 5.MTA 6.MDA 7.SMTP 8.MUA
  • 1.MUA 2.POP 3.SMTP 4.MDA 5.MTA 6.SMTP 7.POP 8.MUA
  • 1.MDA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MUA 7.POP 8.MDA
  • 1.MUA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MDA 7.POP 8.MUA

09. What is true regarding network layer addressing? (Choose three)

  • uses a flat structure
  • prevent broadcasts
  • heirarchical
  • uniquely identifies each host
  • 48 bits in length
  • contains a network portion

10. Which OSI layers offers reliable, connection-oriented data communication services?

  • application
  • presentation
  • session
  • transport
  • network

11. Examine the graphic with current configurations. Host A in the Clerical offices failed and was replaced. Although a ping to was successful, the replacement computer can not access the company network. What is the likely cause of the problem?

  • IP address incorrectly entered
  • network cables unplugged
  • subnet mask incorrectly entered
  • network card failure

12. Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address, and the destination IP address is At which point in the network was this packet captured?

  • leaving host A
  • leaving ATL
  • leaving Dallas
  • leaving NYC

13. Refer to the exhibit. What two facts can be determined from the information that is given? (Choose two.)

  • This exchange is part of the three-way handshake.
  • The source port indicates that a Telnet session has been initiated.
  • The data is flowing from server to client.
  • The destination port indicates that an HTTP session has been initiated.
  • The data listed is associated with the transport layer.
  • The source port does not support communication with the destination port that is listed.

14. Refer to the exhibit. On the basis of the IP configuration that is shown, what is the reason that Host A and Host B are unable to communicate outside the local network?

  • Host A was assigned a network address.
  • Host B was assigned a multicast address.
  • Host A and Host B belong to different networks.
  • The gateway address was assigned a broadcast address.

15. Which of the following are the address ranges of the private IP addresses? (Choose three.)

  • to
  • to
  • to
  • to
  • to
  • to

16. Which combination of network id and subnet mask correctly identifies all IP addresses from through


17. Which password is automatically encrypted when it is created?

  • vty
  • aux
  • console
  • enable secret
  • enable password

18. Which three statements characterize the transport layer protocols? (Choose three.)

  • TCP and UDP port numbers are used by application layer protocols.

  • TCP uses port numbers to provide reliable transportation of IP packets.
  • UDP uses windowing and acknowledgments for reliable transfer of data.
  • TCP uses windowing and sequencing to provide reliable transfer of data.
  • TCP is a connection-oriented protocol. UDP is a connectionless protocol.

19. When must a router serial interface be configured with the clock rate command?

  • when the interface is functioning as a DTE device
  • when the interface timers have been cleared
  • when the connected DTE device is shut down
  • when the interface is functioning as a DCE device

20. Which two functions of the OSI model occur at layer two? (Choose two.)

  • physical addressing
  • encoding
  • routing
  • cabling
  • media access control

21. A routing issue has occurred in you internetwork. Which of the following type of devices should be examined to isolate this error?

  • access point
  • host
  • hub
  • router
  • switch

22. Refer to the exhibit. With the router running NAT, what IP addresses can be applied to the computer to allow access to the Internet? (Choose three)


23. Due to a security violation, the router passwords must be changed. What information can be learned from the following configuration entries? (Choose two)

Router(config)# line vty 0 3 Router(config-line)# password c13c0 Router(config-line)# login
  • The entries specify three Telnet lines for remote access.
  • The entries specify four Telnet lines for remote access.
  • The entries set the console and Telnet password to “c13c0″.
  • Telnet access will be denied because the Telnet configuration is incomplete.
  • Access will be permitted for Telnet using “c13c0″ as the password.

24. As network administrator, what is the subnet mask that allows 510 hosts given the IP address


01. Immediately after a router completes its boot sequence, the network administrator wants to check the routers configuration. From privileged EXEC mode, which of the following commands can the administrator use for this purpose? (Choose two.)

  • show flash
  • show NVRAM
  • show startup-config
  • show running-config
  • show version

02. Users in the network are experiencing slow response time when doing file transfers to a remote server. What command could be issued to determine if the router has experienced any input or output errors?

  • show running-config
  • show startup-config
  • show interfaces
  • show ip route
  • show version
  • show memory

03. Refer to the exhibit. A technician applies the configuration in the exhibit to a clean router. To verify the configuration, the technician issues the show running-config command in the CLI session with the router. What lines should the technician expect to see in the router output from the show running-config command?

* enable password class   line console 0   password ccna
 * enable secret cisco    enable password class    line console 0    password ccna
* enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0   enable password class   line console 0   password ccna
* enable secret cisco   enable password 7 14141E0A1F17   line console 0   password 7 020507550A
* enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0   enable password 7 14141E0A1F17   line console 0

04. Refer to the exhibit. A network administrator on HostA has problems accessing the FTP server. Layer three connectivity testing was successful from HostA to the S1 interface of RouterB. Which set of commands will allow the network administrator to telnet to RouterB and run debug commands?

* RouterB(config)# enable secret class   RouterB(config)# line vty 0 4   RouterB(config-if)# login
* RouterB(config)# enable secret class   RouterB(config)# line vty 0 2   RouterB(config-vty)# password cisco   RouterB(config-vty)# login
* RouterB(config)# enable secret class   RouterB(config)# line vty 0   RouterB(config-line)# password cisco   RouterB(config-line)# login
* RouterB(config)# enable secret class   RouterB(config)# line aux 0   RouterB(config-line)# password cisco   RouterB(config-line)# login
* RouterB(config)# enable secret class   RouterB(config)# line aux 0   RouterB(config-vty)# password cisco   RouterB(config-vty)# login

05. The connection between routers B and C has been successfully tested. However, after rebooting router C, the administrator noticed the response time between networks and is slower. Ping between the two routers is successful. A trace route indicates three hops from router B to router C. What else can be done to troubleshoot the problem?

  • Ping router B S0/1 connection from router C.
  • Trace the connection between router B to router C S0/1.
  • Issue a show ip route command in router B to verify routing is enabled.
  • Issue a show ip interface brief command on router C.

06. What command is used to change the default router name to Fontana?

  • Router# name Fontana
  • Router# hostname Fontana
  • Router(config)# name Fontana
  • Router(config)# hostname Fontana

07. The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)

  • Sydney(config-if)# ip address
  • Sydney(config-if)# no shutdown
  • Sydney(config-if)# ip address
  • Sydney(config-if)# clock rate 56000
  • Sydney(config-if)# ip host Melbourne

08. Refer to the exhibit. The output is shown for the show ip route command executed on Router A. What does the IP address represent?

  • Gateway for the network
  • Gateway for the network
  • IP assigned to the serial port on Router A
  • IP assigned to the serial port on Router B

09. Refer to the exhibit. What additional command is required to allow remote access to this switch from hosts outside the local network?

  • NA-SW1(config-if)# no shutdown
  • NA-SW1(config)# enable password password
  • NA-SW1(config)# ip default-gateway address
  • NA-SW1(config-if)# description description

10. In a Cisco device, where is the IOS file stored prior to system startup?

  • RAM
  • ROM
  • Flash

11. When network services fail, which port is most often used to access a router for management purposes?

  • AUX

  • Ethernet
  • Console
  • Telnet
  • SSH

12. A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a router to manage it. Which access method should be chosen?

  • Telnet
  • Console
  • AUX
  • SSH

13. In a Cisco router, when do changes made to the running-configuration take effect?

  • after a system restart
  • as the commands are entered
  • when logging off the system
  • when the configuration is saved to the startup-configuration

14. Refer to the exhibit. Which names correctly identify the CLI mode represented by the prompt for Switch-East4#? (Choose two.)

  • line configuration mode
  • user executive mode
  • global configuration mode
  • privileged executive mode
  • interface configuration mode
  • enable mode

15. Which three terms correctly define the forms of help available within the Cisco IOS? (Choose three.)

  • hot keys
  • context-check
  • context-sensitive
  • structured check
  • command override
  • command syntax check

16. Which combination of keys would be used at the CLI prompt to interrupt a ping or traceroute process?

  • Ctrl-C
  • Ctrl-P
  • Ctrl-R
  • Ctrl-Shift-6
  • Ctrl-Z

17. Refer to the exhibit. What command will place the router into the correct mode to configure an appropriate interface to connect to a LAN?

  • UBAMA# configure terminal
  • UBAMA(config)# line vty 0 4
  • UBAMA(config)# line console 0
  • UBAMA(config)# interface Serial 0/0/0
  • UBAMA(config)# interface FastEthernet 0/1

18. On a Cisco router, which interface would be used to make the initial configuration?


19. Refer to the exhibit. A student is responsible for the IP addressing, configuration and connectivity testing of the network shown in the graphic. A ping from host B to host C results in a destination unreachable but a ping from host B to host A was successful. What two reasons could account for this failure based on the graphic and partial router output for the Dallas router? (Choose two.)

  • The host A is turned off.
  • The Fa0/0 interface on Dallas is shutdown.
  • The LAN cable is disconnected from host B.
  • The S0/0/1 IP address of Dallas is improperly configured.
  • The Fa0/0 interface on Dallas is in a different subnet than host B.
  • The clock rate is missing on the serial link between Dallas and NYC.

01. Refer to the exhibit. A student working in the lab selects a cable that is wired as shown. Which connection types can successfully be made with this cable? (Choose two.)

  • connecting a PC to a router’s console port
  • connecting two routers together via their fast ethernet ports
  • connecting two switches together at gigabit speeds
  • connecting a PC to a switch at Gigabit Ethernet speeds
  • connecting two devices with the same interface type at Fast Ethernet speeds

02. Which option identifies the primary interface which would be used for initial configuration of a Cisco router?

  • AUX interface
  • Ethernet interface
  • serial interface
  • console interface

03. What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)

  • greater distances per cable run
  • lower installation cost
  • limited susceptibility to EMI/RFI
  • durable connections
  • greater bandwidth potential
  • easily terminated

04. A network administrator is required to use media in the network that can run up to 100 meters in cable length without using repeaters. The chosen media must be inexpensive and easily installed. The installation will be in a pre-existing building with limited cabling space. Which type of media would best meet these requirements?

  • STP
  • UTP
  • coaxial
  • single-mode fiber
  • multimode fiber

05. What does the term “attenuation” mean in data communication?

  • loss of signal strength as distance increases
  • time for a signal to reach its destination
  • leakage of signals from one cable pair to another
  • strengthening of a signal by a networking device

06. How many host addresses may be assigned on each subnetwork when using the network address with a subnet mask of

  • 30
  • 256
  • 2046
  • 2048
  • 4094
  • 4096

07. Which subnet mask would be assigned to the network address of to provide 254 useable host addresses per subnetwork?


08. A company is planning to subnet its network for a maximum of 27 hosts. Which subnet mask would provide the needed hosts and leave the fewest unused addresses in each subnet?


09. What type of network cable is used between a terminal and a console port?

  • cross-over
  • straight-through
  • rollover
  • patch cable

10. Which device is used to create or divide broadcast domains?

  • hub
  • switch
  • bridge
  • router
  • repeater

11. Refer to the exhibit. What destination IP address will PC1 place in the header for a packet destined for PC2?


12. Refer to the exhibit. Based on the IP configuration shown, what would be the result of Host A and Host B attempting to communicate outside the network segment?

  • both host A and B would be successful
  • host A would be successful, host B would fail
  • host B would be successful, host A would fail
  • both Host A and B would fail

13. Which three types of connectors are commonly associated with Cisco’s V.35 serial cables? (Choose three.)

  • RJ 11
  • DB 60
  • Winchester 15 pin
  • DB 9
  • smart serial
  • RJ 45

14. Refer to the exhibit. How many subnets are required to support the network that is shown?

  • 2
  • 3
  • 4
  • 5

15. What are two common methods for setting a UTP Ethernet port to MDI or MDIX operation? (Choose two.)

  • cable color code association
  • cable selection and configuration
  • use of cable testers to determine pinouts
  • the automatic detection and negotiating of MDI/MDIX operation of the port
  • the enabling of the mechanism to electrically swap the transmit and receive pairs

16. Refer to the exhibit. A student is setting up a home network primarily used for extensive file transfers, streaming video, and gaming. Which network device is best suited to these types of activities in the topology shown?

  • wireless access point
  • router
  • hub
  • switch

17. Which three statements are true about the role of routers in the network? (Choose three.)

  • They propagate broadcasts.
  • They enlarge collision domains.
  • They segment broadcast domains.
  • They interconnect different network technologies.
  • Each router interface requires a separate network or subnet.
  • They maintain a common frame format between LAN and WAN interfaces.

18. Refer to the exhibit. A network administrator has decided to use packet capture software to evaluate all traffic from the student subnet on the way to the Internet. To ensure that all packets are captured, what network device should be used to connect the monitoring station to the network between R1 and R2?

  • hub
  • router
  • firewall appliance
  • wireless access point

19. Refer to the exhibit. Assume that all devices are using default settings. How many subnets are required to address the topology that is shown?

  • 1
  • 3
  • 4
  • 5
  • 7

20. Refer to the exhibit. Which three statements are true about the exhibited topology? (Choose three.)

  • Hosts B and C are in the same subnet.
  • Five broadcast domains are present.
  • Host B is using a crossover cable to connect to the router.
  • Four broadcast domains are present.
  • Five networks are shown.
  • Host B is using a rollover cable to connect to the router.

21. To establish a console connection from a computer to a Cisco router, which cable wiring option would be used?

  • crossover cable
  • straight through cable
  • rollover cable
  • V.35 cable

22. Refer to the exhibit. Which three statements identify the type of cabling that would be used in the segments that are shown? (Choose three.)

  • Segment 1 uses backbone cabling.
  • Segment 1 uses a patch cable.
  • Segment 3 uses patch cabling.
  • Segment 3 uses vertical cabling.
  • Segment 3 uses horizontal cabling.
  • Segment 4 uses vertical cabling.

23. Refer to the exhibit. A network technician has been allocated the private IP address range for use in the network that shown in the exhibit. Which subnet mask would be used to meet the host requirements for segment A of this internetwork?


01. Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below.

  • 85
  • 90
  • BA
  • A1
  • B3
  • 1C

02. Which of the following describe interframe spacing? (Choose two.)

  • the minimum interval, measured in bit-times, that any station must wait before sending another frame
  • the maximum interval, measured in bit-times, that any station must wait before sending another frame
  • the 96-bit payload padding inserted into a frame to achieve a legal frame size
  • the 96-bit frame padding transmitted between frames to achieve proper synchronization
  • the time allowed for slow stations to process a frame and prepare for the next frame
  • the maximum interval within which a station must send another frame to avoid being considered unreachable

03. When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?

  • The hosts return to a listen-before-transmit mode.
  • The hosts creating the collision have priority to send data.
  • The hosts creating the collision retransmit the last 16 frames.
  • The hosts extend their delay period to allow for rapid transmission.

04. After an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data?

  • the device involved in the collision with the lowest MAC address
  • the device involved in the collision with the lowest IP address
  • any device in the collision domain whose backoff timer expires first
  • those that began transmitting at the same time

05. Which of the following is a drawback of the CSMA/CD access method?

  • Collisions can decrease network performance.
  • It is more complex than non-deterministic protocols.
  • Deterministic media access protocols slow network performance.
  • CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies.

06. Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?

  • No collisions will occur on this link.
  • Only one of the devices can transmit at a time.
  • The switch will have priority for transmitting data.
  • The devices will default back to half duplex if excessive collisions occur.

07. Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame?

  • A random delay is used to ensure a collision-free link.
  • A random delay value for each device is assigned by the manufacturer.
  • A standard delay value could not be agreed upon among networking device vendors.
  • A random delay helps prevent the stations from experiencing another collision during the transmission.

08. In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?

  • Host B can transmit immediately since it is connected on its own cable segment.
  • Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
  • Host B must send a request signal to Host A by transmitting an interframe gap.
  • Host B must wait until it is certain that Host A has completed sending its frame.

09. Ethernet operates at which layers of the OSI model? (Choose two.)

  • Network layer
  • Transport layer
  • Physical layer
  • Application layer
  • Session layer
  • Data-link layer

10. What does the IEEE 802.2 standard represent in Ethernet technologies?

  • MAC sublayer
  • Physical layer
  • Logical Link Control sublayer
  • Network layer

11. Which statements correctly describe MAC addresses? (Choose three.)

  • dynamically assigned
  • copied into RAM during system startup
  • layer 3 address
  • contains a 3 byte OUI
  • 6 bytes long
  • 32 bits long

12. Refer to the exhibit. Host_A is attempting to contact Server_B. Which statements correctly describe the addressing Host_A will generate in the process? (Choose two.)

  • A packet with the destination IP of Router_B.
  • A frame with the destination MAC address of Switch_A.
  • A packet with the destination IP of Router_A.
  • A frame with the destination MAC address of Router_A.
  • A packet with the destination IP of Server_B.
  • A frame with the destination MAC address of Server_B.

13. Host A has an IP address of, a mask of, and a default gateway of Host A needs to send a packet to a new host whose IP is Host A performs the ANDing operation on its address and subnet mask. What two things will occur? (Choose two.)

  • Host A will get a result of from the AND process.
  • Host A will send on to the media a broadcast frame that contains the packet.
  • Host A will broadcast an ARP request for the MAC of the host
  • Host A will change the destination IP of the packet to and forward the packet.
  • Host A will encapsulate the packet in a frame with a destination MAC that is the MAC address associated with

14. Which two features make switches preferable to hubs in Ethernet-based networks? (Choose two.)

  • reduction in cross-talk
  • minimizing of collisions
  • support for UTP cabling
  • division into broadcast domains
  • increase in the throughput of communications

15. Ethernet operates at which layer of the TCP/IP network model?

  • application
  • physical
  • transport
  • internet
  • data link
  • network access

16. What are three functions of the upper data link sublayer in the OSI model? (Choose three.)

  • recognizes streams of bits
  • identifies the network layer protocol
  • makes the connection with the upper layers
  • identifies the source and destination applications
  • insulates network layer protocols from changes in physical equipment
  • determines the source of a transmission when multiple devices are transmitting

17. What three primary functions does data link layer encapsulation provide? (Choose three.)

  • addressing
  • error detection
  • frame delimiting
  • port identification
  • path determination
  • IP address resolution

18. What are the two most commonly used media types in Ethernet networks today? (Choose two.)

  • coaxial thicknet
  • copper UTP
  • coaxial thinnet
  • optical fiber
  • shielded twisted pair

19. Refer to the exhibit. Which option correctly identifies content that the frame data field may contain?

  • preamble and stop frame
  • network layer packet
  • physical addressing
  • FCS and SoF

20. What is the primary purpose of ARP?

  • translate URLs to IP addresses
  • resolve IPv4 addresses to MAC addresses
  • provide dynamic IP configuration to network devices
  • convert internal private addresses to external public addresses

01. Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?

  • Presentation
  • Transport
  • Data Link
  • Physical

02. An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?

  • light injector
  • OTDR
  • TDR
  • multimeter

03. Which characteristics describe fiber optic cable? (Choose two.)

  • It is not affected by EMI or RFI.
  • Each pair of cables is wrapped in metallic foil.
  • It combines the technique of cancellation, shielding and twisting to protect data.
  • It has a maximum speed of 100 Mbps.
  • It is the most expensive type of LAN cabling.

04. When is a straight-through cable used in a network?

  • when connecting a router through the console port
  • when connecting one switch to another switch
  • when connecting a host to a switch
  • when connecting a router to another router

05. Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?

  • coax cable
  • rollover cable
  • crossover cable
  • straight-through cable

06. Which method of signal transmission uses radio waves to carry signals?

  • electrical
  • optical
  • wireless
  • acoustic

07. In most business LANs, which connector is used with twisted-pair networking cable?

  • BNC
  • RJ-11
  • RJ-45
  • Type F

08. Which of the following is a characteristic of single-mode fiber-optic cable?

  • generally uses LEDs as the light source
  • relatively larger core with multiple light paths
  • less expensive than multimode
  • generally uses lasers as the light source

09. Which type of cable run is most often associated with fiber-optic cable?

  • backbone cable
  • horizontal cable
  • patch cable
  • work area cable

10. What are three measures of data transfer? (Choose three.)

  • goodput
  • frequency
  • amplitude
  • throughput
  • crosstalk
  • bandwidth

11. With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?

  • the magnetic field around the adjacent pairs of wire
  • the use of braided wire to shield the adjacent wire pairs
  • the reflection of the electrical wave back from the far end of the cable
  • the collision caused by two nodes trying to use the media simultaneously

12. What is a primary role of the Physical layer in transmitting data on the network?

  • create the signals that represent the bits in each frame on to the media
  • provide physical addressing to the devices
  • determine the path packets take through the network
  • control data access to the media

13. In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?

  • coax
  • fiber
  • Cat5e UTP
  • Cat6 UTP
  • STP

14. What is a possible effect of improperly applying a connector to a network cable?

  • Data will be forwarded to the wrong node.
  • Data transmitted through that cable may experience signal loss.
  • An improper signaling method will be implemented for data transmitted on that cable.
  • The encoding method for data sent on that cable will change to compensate for the improper connection.

15. Which fiber connector supports full duplex Ethernet?

* (Third one is the correct one)

16. What is considered a benefit of wireless as a media choice?

  • more host mobility
  • lower security risks
  • reduced susceptibility to interference
  • less impact of the surroundings on the effective coverage area

17. What characteristic of UTP cable helps reduce the effects of interference?

  • the metal braiding in the shielding
  • the reflective cladding around core
  • the twisting of the wires in the cable
  • the insulating material in the outer jacket

01. Which three factors should be considered when implementing a Layer 2 protocol in a network? (Choose three.)

  • the Layer 3 protocol selected
  • the geographic scope of the network
  • the PDU defined by the transport layer
  • the physical layer implementation
  • the number of hosts to be interconnected


Refer to the exhibit. Assuming that the network in the exhibit is converged meaning the routing tables and ARP tables are complete, which MAC address will Host A place in the destination address field of Ethernet frames destined for www.server?

  • 00-1c-41-ab-c0-00
  • 00-0c-85-cf-65-c0
  • 00-0c-85-cf-65-c1
  • 00-12-3f-32-05-af

03. Which options are properties of contention-based media access for a shared media? (Choose three.)

  • non-deterministic
  • less overhead
  • one station transmits at a time
  • collisions exist
  • devices must wait their turn
  • token passing

04. What is true concerning physical and logical topologies?

  • The logical topology is always the same as the physical topology.
  • Physical topologies are concerned with how a network transfers frames.
  • Physical signal paths are defined by Data Link layer protocols.
  • Logical topologies consist of virtual connections between nodes.

05. What determines the method of media access control? (Choose two.)

  • network layer addressing
  • media sharing
  • application processes
  • logical topology
  • intermediary device function

06. What is true regarding media access control? (Choose three.)

  • Ethernet utilizes CSMA/CD
  • defined as placement of data frames on the media
  • contention-based access is also known as deterministic
  • 802.11 utilizes CSMA/CD
  • Data Link layer protocols define the rules for access to different media
  • controlled access contains data collisions

07. Which statements describe the logical token-passing topology? (Choose two.)

  • Network usage is on a first come, first serve basis.
  • Computers are allowed to transmit data only when they possess a token.
  • Data from a host is received by all other hosts.
  • Electronic tokens are passed sequentially to each other.
  • Token passing networks have problems with high collision rates.

08. A network administrator has been asked to provide a graphic representation of exactly where the company network wiring and equipment are located in the building. What is this type of drawing?

  • logical topology
  • physical topology
  • cable path
  • wiring grid
  • access topology

09. What is the purpose of the preamble in an Ethernet frame?

  • is used as a padding for data
  • is used for timing synchronization
  • is used to identify the source address
  • is used to identify the destination address

10. What statements are true regarding addresses found at each layer of the OSI model? (Choose two.)

  • Layer 2 may identify devices by a physical address burned into the network card
  • Layer 2 identifies the applications that are communicating
  • Layer 3 represents a hierarchical addressing scheme
  • Layer 4 directs communication to the proper destination network
  • Layer 4 addresses are used by intermediary devices to forward data


Refer to the exhibit. Which statement describes the media access control methods that are used by the networks in the exhibit?

  • All three networks use CSMA/CA
  • None of the networks require media access control.
  • Network 1 uses CSMA/CD and Network 3 uses CSMA/CA.
  • Network 1 uses CSMA/CA and Network 2 uses CSMA/CD.
  • Network 2 uses CSMA/CA and Network 3 uses CSMA/CD.


Refer to the exhibit. How many CRC calculations will take place as traffic routes from the PC to the laptop?

  • 1
  • 2
  • 4
  • 6
  • 8
  • 16


Refer to the exhibit. A frame is being sent from the PC to the laptop. Which source MAC and IP addresses will be included in the frame as it leaves RouterB? (Choose two.)

  • source MAC – PC
  • source MAC – S0/0 on RouterA
  • source MAC – Fa0/1 on RouterB
  • source IP – PC
  • source IP – S0/0 on RouterA
  • source IP – Fa0/1 of RouterB

14. Which sublayer of the data link layer prepares a signal to be transmitted at the physical layer?

  • LLC
  • MAC
  • HDLC
  • NIC

15. What two facts are true when a device is moved from one network or subnet to another? (Choose two.)

  • The Layer 2 address must be reassigned.
  • The default gateway address should not be changed.
  • The device will still operate at the same Layer 2 address.
  • Applications and services will need additional port numbers assigned.
  • The Layer 3 address must be reassigned to allow communications to the new network.

16. What is a function of the data link layer?

  • provides the formatting of data
  • provides end-to-end delivery of data between hosts
  • provides delivery of data between two applications
  • provides for the exchange data over a common local media

17. What is a characteristic of a logical point-to-point topology?

  • The nodes are physically connected.
  • The physical arrangement of the nodes is restricted.
  • The media access control protocol can be very simple.
  • The data link layer protocol used over the link requires a large frame header.

18. What is a primary purpose of encapsulating packets into frames?

  • provide routes across the internetwork
  • format the data for presentation to the user
  • facilitate the entry and exit of data on media
  • identify the services to which transported data is associated

19. What is the primary purpose of the trailer in a data link layer frame?

  • define the logical topology
  • provide media access control
  • support frame error detection
  • carry routing information for the frame

20. What are three characteristics of valid Ethernet Layer 2 addresses? (Choose three.)

  • They are 48 binary bits in length.
  • They are considered physical addresses.
  • They are generally represented in hexadecimal format.
  • They consist of four eight-bit octets of binary numbers.
  • They are used to determine the data path through the network.
  • They must be changed when an Ethernet device is added or moved within the network.


Refer to the exhibit. Which network prefix will implement the IP addressing scheme for the LANs shown in the graphic?

  • /24
  • /16
  • /20
  • /27
  • /25
  • /28

02. Which IPv4 subnetted addresses represent valid host addresses? (Choose three.)

  • /26
  • /26
  • /26
  • /27
  • /27
  • /27

03. Which statements are true regarding IP addressing? (Choose two.)

  • NAT translates public addresses to private addresses destined for the Internet.
  • Only one company is allowed to use a specific private network address space.
  • Private addresses are blocked from public Internet by router.
  • Network is part of the private address space.
  • IP address can be used for a host to direct traffic to itself.

04. Which process do routers use to determine the subnet network address based upon a given IP address and subnet mask?

  • binary adding
  • hexadecimal anding
  • binary division
  • binary multiplication
  • binary ANDing


Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem?

  • The host subnet mask is incorrect.
  • The default gateway is a network address.
  • The default gateway is a broadcast address.
  • The default gateway is on a different subnet from the host.

06. What subnet mask would a network administrator assign to a network address of if it were possible to have up to 254 hosts?


07. Which three IP addresses are private? (Choose three.)


08. Given the IP address and subnet mask of, which of the following would describe this address?

  • This is a useable host address.
  • This is a broadcast address.
  • This is a network address.
  • This is not a valid address.

09. A router interface has been assigned an IP address of with a mask of To which subnet does the IP address belong?



Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the workgroup server’s properties to allow connectivity to the network?

  • IP address: subnet mask: default gateway:
  • IP address: subnet mask: default gateway:
  • IP address: subnet mask: default gateway:
  • IP address: subnet mask: default gateway:
  • IP address: subnet mask: default gateway:

11. Which of the following network devices are recommended to be assigned static IP addresses? (Choose three.)

  • LAN workstations
  • servers
  • network printers
  • routers
  • remote workstations
  • laptops

12. Which of the following are features of IPv6? (Choose three.)

  • larger address space
  • faster routing protocols
  • data types and classes of service
  • authentication and encryption
  • improved host naming conventions
  • same addressing scheme as IPv4

13. What is the primary reason for development of IPv6?

  • security
  • header format simplification
  • expanded addressing capabilities
  • addressing simplification

14. What two things will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away? (Choose two.)

  • The router will discard the packet.
  • The router will decrement the TTL value and forward the packet to the next router on the path to the destination host.
  • The router will send a time exceeded message to the source host.
  • The router will increment the TTL value and forward the packet to the next router on the path to the destination host.
  • The router will send an ICMP Redirect Message to the source host.


Refer to the exhibit. Why would the response shown be displayed after issuing the command ping on a PC?

  • The IP settings are not properly configured on the host.
  • Internet Protocol is not properly installed on the host.
  • There is a problem at the physical or data link layer.
  • The default gateway device is not operating.
  • A router on the path to the destination host has gone down.

16. How many bits make up an IPv4 address?

  • 128
  • 64
  • 48
  • 32


Refer to the exhibit. A network administrator discovers that host A is having trouble with Internet connectivity, but the server farm has full connectivity. In addition, host A has full connectivity to the server farm. What is a possible cause of this problem?

  • The router has an incorrect gateway.
  • Host A has an overlapping network address.
  • Host A has an incorrect default gateway configured.
  • Host A has an incorrect subnet mask.
  • NAT is required for the host A network.

18. What three facts are true about the network portion of an IPv4 address? (Choose three.)

  • identifies an individual device
  • is identical for all hosts in a broadcast domain
  • is altered as packet is forwarded
  • varies in length
  • is used to forward packets
  • uses flat addressing

19. What is a group of hosts called that have identical bit patterns in the high order bits of their addresses?

  • an internet
  • a network
  • an octet
  • a radix

20. What is the network address of the host /23 in binary?

  • 10101100. 00011001.01000011.00000000
  • 10101100. 00011001.01000011.11111111
  • 10101100. 00011001.01000010.00000000
  • 10101100. 00011001.01000010.01100011
  • 10101100. 00010001.01000011. 01100010
  • 10101100. 00011001.00000000.00000000


Refer to the exhibit. A network administrator has to develop an IP addressing scheme that uses the /24 address space. The network that contains the serial link has already been addressed out of a separate range. Each network will be allocated the same number of host addresses. Which network mask will be appropriate to address the remaining networks?


01. In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another?

  • destination network address
  • source network address
  • source MAC address
  • well known port destination address

02. What information is added during encapsulation at OSI Layer 3?

  • source and destination MAC
  • source and destination application protocol
  • source and destination port number
  • source and destination IP address

03. In a connectionless system, which of the following is correct?

  • The destination is contacted before a packet is sent.
  • The destination is not contacted before a packet is sent.
  • The destination sends an acknowledgement to the source that indicates the packet was received.
  • The destination sends an acknowledgement to the source that requests the next packet to be sent.

04. Which IP packet field will prevent endless loops?

  • type-of-service
  • identification
  • flags
  • time-to-live
  • header checksum

05. Which portion of the network layer address does a router use to forward packets?

  • host portion
  • broadcast address
  • network portion
  • gateway address


Refer to the exhibit. Using the network in the exhibit, what would be the default gateway address for host A in the network?


07. If the default gateway is configured incorrectly on the host, what is the impact on communications?

  • The host is unable to communicate on the local network.
  • The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
  • The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.
  • There is no impact on communications.

08. What is the purpose of a default gateway?

  • physically connects a computer to a network
  • provides a permanent address to a computer
  • identifies the network to which a computer is connected
  • identifies the logical address of a networked computer and uniquely identifies it to the rest of the network
  • identifies the device that allows local network computers to communicate with devices on other networks

09. What type of routing uses information that is manually entered into the routing table?

  • dynamic
  • interior
  • static
  • standard

10. When the destination network is not listed in the routing table of a Cisco router, what are two possible actions that the router might take? (Choose two.)

  • The router sends an ARP request to determine the required next hop address.
  • The router discards the packet.
  • The router forwards the packet toward the next hop indicated in the ARP table.
  • The router forwards the packet to the interface indicated by the source address.
  • The router forwards the packet out the interface indicated by the default route entry.

11. What are the key factors to consider when grouping hosts into a common network? (Choose three.)

  • gateways
  • purpose
  • physical addressing
  • software version
  • geographic location
  • ownership

12. What is a component of a routing table entry?

  • the MAC address of the interface of the router
  • the destination Layer 4 port number
  • the destination host address
  • the next-hop address

13. Which intermediary devices could be used to implement security between networks? (Choose two.)

  • router
  • hub
  • switch
  • firewall
  • access point
  • bridge

14. What are three common problems with a large network? (Choose three.)

  • too few broadcasts
  • performance degradation
  • security issues
  • limited management responsibility
  • host identification
  • protocol compatibility


Refer to the exhibit. All devices shown in the exhibit have factory default settings. How many broadcast domains are represented in the topology that is shown?

  • 3
  • 4
  • 5
  • 7
  • 8
  • 11

16. Which three statements are true about routes and their use? (Choose three.)

  • If no route to the destination network is found, the packet is returned to the previous router.
  • If the destination network is directly connected, the router forwards the packet to the destination host.
  • If multiple network entries exist for the destination network, the most general route is used to forward the packet.
  • If no route exists for the destination network and a default route is present, the packet is forwarded to the next-hop router.
  • If the originating host has a default gateway configured, the packet for a remote network can be forwarded using that route.
  • If a host does not have a route manually configured for the destination network, the host will drop the packet.


Refer to the exhibit. A network administrator is troubleshooting a connectivity problem and needs to determine the address that is used to forward network packets out the network. Using the netstat -r command, the administrator would identify which address as the address to which all hosts send packets that are destined for an outside network?



Refer to the exhibit. A network administrator notices that there are too many broadcasts on the network. What two steps can the network administrator take to resolve this problem? (Choose two.)

  • Replace S2 with a router.
  • Place all servers on S1.
  • Disable TCP/IP broadcasts.
  • Subnet the /24 network.
  • Disable all unused interfaces on the switches.


Refer to the exhibit. The network in the exhibit is fully operational. What two statements correctly describe the routing for the topology that is shown? (Choose two.)

  • is the next-hop address that is used by R3 to route a packet from the network to the network.
  • is the next-hop address that is used by R1 to route a packet from the network to the network.
  • is the next-hop address that is used by R1 to route a packet from the network to the network.
  • is the next-hop address that is used by R3 to route a packet from the to the network.
  • is the next-hop address that is used by R2 to route a packet from the network to the network.
  • is the next-hop address that is used by R2 to route a packet from the network to the network.

20. What two characteristics are commonly associated with dynamic routing protocols? (Choose two.)

  • require no device configuration
  • provide routers with up-to-date routing tables
  • require less processing power than static routes require
  • consume bandwidth to exchange route information
  • prevent manual configuration and maintenance of the routing table

21. What statement describes the purpose of a default route?

  • A host uses a default route to transfer data to another host on the same network segment.
  • A host uses a default route to forward data to the local switch as the next hop to all destinations.
  • A host uses a default route to identify the Layer 2 address of an end device on the local network.
  • A host uses a default route to transfer data to a host outside the local network when no other route to the destination exists.


Based on the transport layer header shown in the diagram, which of the following statements describe the established session? (Choose two.)

  • This is a UDP header.
  • This contains a Telnet request.
  • This contains a TFTP data transfer.
  • The return packet from this remote host will have an Acknowledgement Number of 43693.
  • This is a TCP header.

02. With TCP/IP data encapsulation, which range of port numbers identifies all well-known applications?

  • 0 to 255
  • 256 to 1022
  • 0 to 1023
  • 1024 to 2047
  • 49153 to 65535

03. Why are port numbers included in the TCP header of a segment?

  • to indicate the correct router interface that should be used to forward a segment
  • to identify which switch ports should receive or forward the segment
  • to determine which Layer 3 protocol should be used to encapsulate the data
  • to enable a receiving host to forward the data to the appropriate application
  • to allow the receiving host to assemble the packet in the proper order

04. Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately?

  • application
  • presentation
  • session
  • transport
  • network


Refer to the exhibit. Host A is using FTP to download a large file from Server 1. During the download process, Server 1 does not receive an acknowledgment from Host A for several bytes of transferred data. What action will Server 1 take as a result?

  • create a Layer 1 jam signal
  • reach a timeout and resend the data that needs to be acknowledged
  • send a RESET bit to the host
  • change the window size in the Layer 4 header

06. Why is flow control used for TCP data transfer?

  • to synchronize equipment speed for sent data
  • to synchronize and order sequence numbers so data is sent in complete numerical order
  • to prevent the receiver from being overwhelmed by incoming data
  • to synchronize window size on the server
  • to simplify data transfer to multiple hosts

07. Which two options represent Layer 4 addressing? (Choose two.)

  • identifies the destination network
  • identifies source and destination hosts
  • identifies the communicating applications
  • identifies multiple conversations between the hosts
  • identifies the devices communicating over the local media


Refer to the exhibit. In line 7 of this Wireshark capture, what TCP operation is being performed?

  • session establishment
  • segment retransmit
  • data transfer
  • session disconnect


Refer to the exhibit. What two pieces of information can be determined from the output that is shown? (Choose two.)

  • The local host is using three client sessions.
  • The local host is using web sessions to a remote server.
  • The local host is listening for TCP connections using public addresses.
  • The local host is using well-known port numbers to identify the source ports.
  • The local host is performing the three-way handshake with

10. What is dynamically selected by the source host when forwarding data?

  • destination logical address
  • source physical address
  • default gateway address
  • source port

11. What are two features of the User Datagram Protocol (UDP)? (Choose two.)

  • flow control
  • low overhead
  • connectionless
  • connection-oriented
  • sequence and acknowledgements

12. What mechanism is used by TCP to provide flow control as segments travel from source to destination?

  • sequence numbers
  • session establishment
  • window size
  • acknowledgments

13. Which transport layer protocol provides low overhead and would be used for applications which do not require reliable data delivery?

  • TCP
  • IP
  • UDP
  • HTTP
  • DNS

14. Which information is found in both the TCP and UDP header information?

  • sequencing
  • flow control
  • acknowledgments
  • source and destination port

15. Which three features allow TCP to reliably and accurately track the transmission of data from source to destination? (Choose three.)

  • flow control
  • urgent pointer
  • best effort delivery
  • session establishment
  • connectionless services
  • numbering and sequencing

16. During a TCP communication session, if the packets arrive to the destination out of order, what will happen to the original message?

  • The packets will not be delivered.
  • The packets will be retransmitted from the source.
  • The packets will be delivered and reassembled at the destination.
  • The packets will be delivered and not reassembled at the destination.

17. Which is an important characteristic of UDP?

  • acknowledgement of data delivery
  • minimal delays in data delivery
  • high reliability of data delivery
  • same order data delivery

18. After a web browser makes a request to a web server that is listening to the standard port, what will be the source port number in the TCP header of the response from the server?

  • 13
  • 53
  • 80
  • 1024
  • 1728

19. Which event occurs during the transport layer three-way handshake?

  • The two applications exchange data.
  • TCP initializes the sequence numbers for the sessions.
  • UDP establishes the maximum number of bytes to be sent.
  • The server acknowledges the bytes of data received from the client.


Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?

  • Host1 sends a segment with the ACK flag = 0, SYN flag = 0 to Host2.
  • Host1 sends a segment with the ACK flag = 1, SYN flag = 0 to Host2.
  • Host1 sends a segment with the ACK flag = 1, SYN flag = 1 to Host2.
  • Host2 sends a segment with the ACK flag = 0, SYN flag = 1 to Host1.
  • Host2 sends a segment with the ACK flag = 1, SYN flag = 0 to Host1.
  • Host2 sends a segment with the ACK flag = 1, SYN flag = 1 to Host1.

01. What application layer protocol is commonly used to support for file transfers between a client and a server?

  • HTML
  • HTTP
  • FTP
  • Telnet

02. What are two forms of application layer software? (Choose two.)

  • applications
  • dialogs
  • requests
  • services
  • syntax

03. A network administrator is designing a network for a new branch office of twenty-five users. What are the advantages of using a client-server model? (Choose two.)

  • centralized administration
  • does not require specialized software
  • security is easier to enforce
  • lower cost implementation
  • provides a single point of failure

04. What is the purpose of resource records in DNS?

  • temporarily holds resolved entries
  • used by the server to resolve names
  • sent by the client to during a query
  • passes authentication information between the server and client

05. What is the automated service that matches resource names with the required IP address?

  • HTTP
  • SSH
  • FQDN
  • DNS
  • Telnet
  • SMTP

06. What three protocols operate at the Application layer of the OSI model? (Choose three.)

  • ARP
  • DNS
  • PPP
  • SMTP
  • POP
  • ICMP

07. What are three properties of peer-to-peer applications? (Choose three.)

  • acts as both a client and server within the same communication
  • requires centralized account administration
  • hybrid mode includes a centralized directory of files
  • can be used in client-server networks
  • requires a direct physical connection between devices
  • centralized authentication is required

08. Which application layer protocols correctly match a corresponding function? (Choose two.)

  • DNS dynamically allocates IP addresses to hosts
  • HTTP transfers data from a web server to a client
  • POP delivers email from the client to the server email server
  • SMTP supports file sharing
  • Telnet provides a virtual connection for remote access

09. Which email components are used to forward mail between servers? (Choose two.)

  • MDA
  • IMAP
  • MTA
  • POP
  • SMTP
  • MUA

10. As compared to SSH, what is the primary disadvantage of telnet?

  • not widely available
  • does not support encryption
  • consumes more network bandwidth
  • does not support authentication

11. Which statements are correct concerning the role of the MTA in handling email? (Choose three.)

  • routes email to the MDA on other servers
  • receives email from the client’s MUA
  • receives email via the POP3 protocol
  • passes email to the MDA for final delivery
  • uses SMTP to route email between servers
  • delivers email to clients via the POP3 protocol

12. Which two protocols are used to control the transfer of web resources from a web server to a client browser? (Choose two.)

  • ASP
  • FTP
  • HTML
  • HTTP
  • IP

13. A small home network has been installed to interconnect three computers together for gaming and file sharing. What two properties represent this network type? (Choose two.)

  • User accounts are centralized.
  • Security is difficult to enforce.
  • Specialized operating system software is required.
  • File permissions are controlled by a single computer.
  • A computer that responds to a file sharing request is functioning as a server.

14. Which layer of the OSI model supplies services that allow user to interface with the network?

  • physical
  • session
  • network
  • presentation
  • application
  • transport

15. ccna1-ch3-15
Refer to the exhibit. What is the destination port for the communication that is represented on line 5?

  • 80
  • 1261
  • 15533
  • 3912
  • 65520

16. What are two characteristics of peer-to-peer networks? (Choose two.)

  • scalable
  • one way data flow
  • decentralized resources
  • centralized user accounts
  • resource sharing without a dedicated server

17. What application layer protocol describes the services that are used for file sharing in Microsoft networks?

  • DHCP
  • DNS
  • SMB
  • SMTP
  • Telnet

18. What are two characteristics of clients in data networks? (Choose two.)

  • use daemons
  • initiate data exchanges
  • are repositories of data
  • may upload data to servers
  • listen for requests from servers

19. What is the role of the OSI application layer?

  • provides segmentation of data
  • provides encryption and conversion of data
  • provides the interface between the applications on either end of the network
  • provides control of all the data flowing between the source and destination devices

20. How does the application layer on a server usually process multiple client request for services?

  • ceases all connections to the service
  • denies multiple connections to a single daemon
  • suspends the current connection to allow the new connection
  • uses support from lower layer functions to distinguish between connections to the service

01. Which statements correctly identify the role of intermediary devices in the network? (Choose three.)

  • determine pathways for data
  • initiate data communications
  • retime and retransmit data signals
  • originate the flow of data
  • manage data flows
  • final termination point for data flow

02. Select the statements that are correct concerning network protocols. (Choose three.)

  • define the structure of layer specific PDU’s
  • dictate how to accomplish layer functions
  • outline the functions necessary for communications between layers
  • limit the need for hardware compatibility
  • require layer dependent encapsulations
  • eliminate standardization among vendors

03. What are two functions of encapsulation? (Choose two.)

  • tracks delay between end devices
  • enables consistent network paths for communication
  • allows modification of the original data before transmission
  • identifies pieces of data as part of the same communication
  • ensures that data pieces can be directed to the correct receiving end device

04. What is a primary function of the trailer information added by the data link layer encapsulation?

  • supports error detection
  • ensures ordered arrival of data
  • provides delivery to correct destination
  • identifies the devices on the local network
  • assists intermediary devices with processing and path selection

05. Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.)

  • Network
  • Transport
  • Physical
  • Data Link
  • Session

06. What is a PDU?

  • corruption of a frame during transmission
  • data reassembled at the destination
  • retransmitted packets due to lost communication
  • a layer specific encapsulation

07. Which characteristic correctly refers to end devices in a network?

  • manage data flows
  • originate data flow
  • retime and retransmit data signals
  • determine pathways for data


Refer to the exhibit. “Cell A” at IP address has established an IP session with “IP Phone 1″ at IP address Based upon the graphic, which device type best describes the function of wireless device “Cell A?”

  • the destination device
  • an end device
  • an intermediate device
  • a media device


Refer to the exhibit. Which three labels correctly identify the network types for the network segments that are shown? (Choose three.)

  • Network A — WAN
  • Network B — WAN
  • Network C — LAN
  • Network B — MAN
  • Network C — WAN
  • Network A – LAN

10. Which three statements best describe a Local Area Network (LAN)? (Choose three.)

  • A LAN is usually in a single geographical area.
  • The network is administered by a single organization.
  • The connection between segments in the LAN is usually through a leased connection.
  • The security and access control of the network are controlled by a service provider.
  • A LAN provides network services and access to applications for users within a common organization.
  • Each end of the network is generally connected to a Telecommunication Service Provider (TSP).


Refer to the exhibit. Which networking term describes the data interleaving process represented in the graphic?

  • piping
  • PDU
  • streaming
  • multiplexing
  • encapsulation

12. What is the primary purpose of Layer 4 port assignment?

  • to identify devices on the local media
  • to identify the hops between source and destination
  • to identify to the intermediary devices the best path through the network
  • to identify the source and destination end devices that are communicating
  • to identify the processes or services that are communicating within the end devices

13. What device is considered an intermediary device?

  • file server
  • IP phone
  • laptop
  • printer
  • switch


Refer to the exhibit. Which term correctly identifies the device type that is included in the area B?

  • source
  • end
  • transfer
  • intermediary


Refer to the exhibit. What type of network is shown?

  • WAN
  • MAN
  • LAN
  • WLAN

16. Which layer encapsulates the segment into packets?

  • physical
  • data link
  • network
  • transport

17. What can be identified by examining the network layer header?

  • the destination device on the local media
  • the destination host address
  • the bits that will be transferred over the media
  • the source application or process creating the data


Refer to the exhibit. Which set of devices contains only end devices?

  • A, C, D
  • B, E, G, H
  • C, D, G, H, I, J
  • D, E, F, H, I, J
  • E, F, H, I, J

19. During the encapsulation process, what occurs at the data link layer?

  • No address is added.
  • The logical address is added.
  • The physical address is added.
  • The process port number is added.

20. What is the purpose of the TCP/IP Network Access layer?

  • path determination and packet switching
  • data presentation
  • reliability, flow control, and error detection
  • network media control
  • the division of segments into packets

21. What is the proper order of the layers of the OSI model from the highest layer to the lowest layer?

  • physical, network, application, data link, presentation, session, transport
  • application, physical, session, transport, network, data link, presentation
  • application, presentation, physical, session, data link, transport, network
  • application, presentation, session, transport, network, data link, physical
  • presentation, data link, session, transport, network, physical, application

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