CCNA 2 FINAL ANSWERS

• Host name resolution allows for the use of an alphanumeric name to identify network devices. Select the answer that displays the correct configuration syntax for creating a host name.
  
  • Router(config)# ip host Fontana 200.100.50.5
    
• Which command will display the status of the carrier detect signal and keepalive messages for a router running CDP?
  
  • Router# show cdp interface
    
• Which of the following are necessary for basic network communication to occur between hosts that will run such applications as Telnet, web browsers, and e-mail? (Choose three.)
  
  • TCP/IP must be installed and properly configured on each device.
    
  • A default gateway must be configured for datagrams to travel outside of the LAN.
    
  • To ensure accurate delivery, a router must be configured and accessible by hosts on the network.
    
• The following access list has been created to prevent traffic from host 204.204.7.122 from accessing the 201.100.11.0 network.
  access-list 22 deny host 204.204.7.122
  access-list 22 permit any
  Which group of commands will properly place this access list so that this host is denied access only o the 201.100.11.0 network?
  
  • RouterB(config)# interface fa0/0
    
  • RouterB(config-if)# ip access-group 22 out
    
• How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS?
  
  • 5
    
• What can be determined from the partial output of the show ip route command displayed below? (Choose two.)
  
  • The next update will be in 16 seconds.
    
  • The administrative distance is 120 and the metric is 1.
    
• Which of the following are true regarding the setup configuration mode? (Choose three.)
  
  • To abort the setup mode, use the CTRL+C keys.
    
  • To enter setup mode, use the privileged mode setup command.
    
  • A router that does not find a valid configuration file during the boot process will start the system configuration dialog.
    
• A network administrator needs to configure a routing protocol that will use bandwidth and delay when making routing decisions. Which of the following commands must be configured on Router2 so those metric values will be used when determining the best path?(Choose two.)
  
  • Router2(config)# router igrp 200
    
  • Router2(config-router)# network 192.5.5.0
    
  • Router2(config-router)# network 201.100.11.0
    
• Which statements are true regarding VTY passwords? (Choose two.)
  
  • All VTY lines do not need to use the same password.
    
  • A VTY password is required to establish telnet sessions.
    
• Refer to the topology shown. Which commands must be configured in order to enable two-way communication between the hosts connected to the E0 interface of the Utah router and hosts connected to the E0 interface of the
  
  • Idaho(config)# ip route 172.31.1.0 255.255.255.0 172.31.2.1
    
  • Idaho(config)# ip route 0.0.0.0 0.0.0.0 s0
    
  • Utah(config)# ip route 0.0.0.0 0.0.0.0 s0
    
• Refer to the above graphic. When using RIP as the routing protocol, how would Chicago use load balancing to route packets to New York? (Choose two.)
  
  • by forwarding packets over paths of equal cost
    
  • by cycling packets through interfaces and routes following the same pattern (Router 1, 2, 3) each time
    
• Routers have different types of memory. Choose the answer that describes ROM.
  
  • initializes the code used to boot the router
    
• Given the above topology, which of the following statements are true? (Choose two.)
  
  • If RouterA receives a packet destined for 192.168.3.146, it will be forwarded out interface Ethernet 0.
    
  • If RouterA receives a packet destined for 10.5.27.15, it will be forwarded out interface Serial 1.
    
• The routers shown in the graphic are running IGRP and sending updates about all of their networks. After the network converged, traffic destined for Router4 was received on the E0 interface of Router2. Which route will have the lowest metric?
  
  • Router2 to Router3 to Router4
    
• Which of the following would cause the "Message Of The Day" banner to appear? (Choose three.)
  
  • telnetting into the router
    
  • using the Aux port to check the current configuration
    
  • using the console port to check the current configuration
    
• A network administrator trying to deny Telnet traffic from the 192.5.5.0 network to the 201.100.11.0 network entered the commands shown in the graphic. When monitoring the network, the administrator noticed that the Telnet packets are still passing between those networks. What is the cause?
  
  • The access list has not been assigned to an interface.
    
• What information is displayed by the show cdp neighbors detail command that is not displayed by the show cdp neighbors command?
  
  • IP addresses
    
• What types of messages are sent periodically by devices configured for CDP?
  
  • advertisements
    
• Routers in an OSPF network collect and advertise what information to other routers in the network? (Choose three.)
  
  • the names of neighboring routers
    
  • the status or router interfaces
    
  • the total path cost of the links to neighboring routers
    
• Which of the following functions are initiated by the router configuration files? (Choose three.)
  
  • making decisions regarding the best path
    
  • controlling the flow of traffic in and out of the router
    
  • specifying the correct set up and use of routed and routing protocols
    
• Which of the following will add a TFTP server as a fallback source for a router to load an IOS image?
  
  • Router# config t
    
  • Router(config)# boot system tftp c2500-d-l.120-9.bin 163.150.9.31
    
  • Router(config)# exit
    
  • Router# copy run start
    
• Which statement about datagram life is true?
  
  • Each router decreases the TTL value by one until it reaches zero. The datagram is then discarded and a destination unreachable message is sent to the source.
    
• An administrator has made routing protocol changes to a router's configuration. To ensure that the changes are implemented, the active configuration is saved and the router is reloaded. After the router has initialized, the output on the screen displays "Would you like to enter the initial configuration dialog?[yes/no]:"
  Why did this dialog appear?
  
  • The configuration register was set to ignore NVRAM.
    
• When would the ROM monitor mode be used? (Choose two.)
  
  • modifying the IOS image stored in Flash
    
  • performing the bootstrap process
    
• What are the major characteristics of a wide area network? (Choose three.)
  
  • connect devices separated by wide geographical areas
    
  • uses serial connections to access bandwidth
    
  • common carriers are needed for connections
    
• Which of the following are characteristics of the Open Shortest Path First (OSPF) routing protocol? (Choose two.)
  
  • functions as a link state routing protocol
    
  • floods routing updates as topology changes occur
    
• Which of the following are functions of a router? (Choose three.)
  
  • packet switching
    
  • segmentation of local area networks
    
  • selection of best path based on a logical addressing
    
• Which of the following WAN connection services typically use synchronous communications? (Choose two.)
  
• leased line
  
• packet-switched
  
• Refer to the output from the show ip route command. What can be concluded from the output of this router command?
  
  • There are two equal cost paths to network 1.0.0.0.
    
• Why is having an interface description useful?
  
  • The interface desciption helps identify distant network connections.
    
• The administrator knows that port E0 on router B connects to a small LAN without any routers. Which command can be executed on router B to conserve bandwidth on port E0?
  
  • passive-interface E0
    
• In the configuration register value 0x2104, which value represents the boot field setting?
  
  • 4
    
• Which of the following statements about the TTL of a datagram are true? (Choose three.)
  
  • The TTL value matches the maximum hop count defined by the routing protocol.
    
  • When the TTL value reaches 0, the packet is discarded.
    
  • A router decreases the TTL value by one as the router forwards the packet.
    
• Which of the following are basic rules that should be followed when creating and applying access lists?
  (Choose three.)
  
  • One access list per protocol per direction.
    
  • There is an implicit deny at the end of all access lists.
    
  • Statements are processed sequentially from top to bottom until a match is found.
    
• If the config-register on a router is set to 0x2102, where is the first place the router will look for boot system commands?
  
  • NVRAM
    
• A client needs to access more than one network service running on a local server. Which of the following pieces of information will be used by the client to communicate with the appropriate network service on the server. (Choose four.)
  
  • IP address of the server
    
  • MAC address of the server
    
  • destination port number
    
  • source port number
    
• Which command is used to redirect debug information to a device that is connected though a Telnet session?
  
  • Router# terminal monitor
    
• RouterB loses connectivity to network 172.17.22.0. During the next update interval, RouterB sends an update to RouterA signifying that network 172.17.22.0 is inaccessible. RouterA adds the changes received from RouterB to its routing table. Approximately at the same time, RouterC sends an update to RouterA stating that network 172.17.22.0 is up. Which of the following is true regarding the described situation? (Choose two.)
  
  • Router A will not accept the information from RouterC if split horizon is enabled.
    
  • RouterA will remove network 172.17.22.0 from its routing table if the network is inaccessible after the flush timer has expired.
    
• Which command will produce the output shown in the graphic?
  
  • show cdp neighbors
    
• Of the eight network users on the Human Resources department LAN, one cannot connect to the file server.
  The user's PC has successfully booted but can not see the network. What should be checked first?
  
  • the PC network interface card LEDs
    
• When must a router serial interface be configured with the clock rate command?
  
  • when no other device is supplying a clock signal to the link
    
• Which of the following are true regarding route metrics? (Choose three.)
  
  • The more factors that make up a metric, the greater the flexibility to tailor network operations.
    
  • Load and reliability are dynamic metrics used by IGRP.
    
  • Ticks delay, MTU, and cost are metrics used by routing protocols.
    
• The following IGRP configuration was typed in for RouterB:
  RouterB(config)# router igrp 100
  RouterB(config-router)# network 192.168.2.0
  RouterB(config-router)# network 192.169.3.0
  After several update periods, a technician notices that RouterB is not receiving updates from all routers shown in the diagram. Which of the following would correct this error?
  
  • RouterB(config)# router igrp 100
    
  • RouterB(config-router)# no network 192.169.3.0
    
  • RouterB(config-router)# network 192.168.3.0
    
• Refer to the network graphic. A packet needs to travel from Router_F to Router_A. Which path would be selected by the IGRP routing protocol if the default metrics are used?
  
  • F,E,D,B,A
    
• The host shown in the graphic has issued the ICMP request packet shown. What information does the host require, and which ICMP message should be sent in reply? (Choose two.)
  
  • The host requires the default gateway IP address.
    
  • The reply should be a router advertisement message.
    
• Which of the following commands would indicate if a boot system statement is configured on a router?
  (Choose three.)
  
  • show startup-config
    
  • show running-config
    
  • show config
    
• Which of the following could be placed in the destination port field of a UDP segment from a client machine?
  
  • 53
    
• The following line was displayed in the output of the show ip route command.
  I 192.168.3.0/24 [100/80135] via 192.168.2.2, 00:00:30, Serial0/0
  What is the value of the composite metric?
  
  • 80135
    
• A network administrator can establish a remote session to a host using the Router> telnet 192.168.1.1 command but is unsuccessful when using the Router> telnet Boston command to connect to the same interface. Which of the following could be the problem? (Choose two.)
  
  • The ip host table on the router is not configured.
    
  • Domain name services are not available.
    
• Assume OSPF is being used on all routers. What happens when the link between Router1 and Router2 goes down? (Choose two.)
  
  • Link-state advertisements are flooded.
    
  • All routers note the change and adjust routes.
    
• Which of the following devices are used in WANs and help define the WAN physical layer? (Choose three.)
  
  • communication servers
    
  • routers
    
  • modems
    
• Which of the following is true regarding the protocol data unit (PDU) shown in the graphic?
  
  • It is a server response to a client request for Telnet services.