CCNA Exploration V4 - Accessing The WAN - Exam Final Practice

50 Questions | Total Attempts: 171

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CCNA Exploration V4 - Accessing The WAN - Exam Final Practice

Questions and Answers
  • 1. 
    A company is looking for a WAN solution to connect its headquarters site with four remote sites. What advantage would dedicated leased lines provide to the customer compared to a shared Frame Relay solution?      
    • A. 

      Lower cost

    • B. 

      Lower latency and jitter

    • C. 

      Variable bandwidth capacity

    • D. 

      Fewer physical router interfaces

  • 2. 
    Refer to the exhibit. The network administrator is adding R1 to an existing network. As a part of the corporate IT procedures, the administrator attempts to back up the router Cisco IOS software of R1 and receives the output shown. The network administrator then attempts unsuccessfully to ping the TFTP server from the console session. What should be done next to isolate this problem?  
    • A. 

      From R2, validate that interface Fa0/0 is operational.

    • B. 

      From the TFTP server, verify that the software on the TFTP server is operational.

    • C. 

      From the TFTP server, confirm there is enough room on the TFTP server for the Cisco IOSsoftware.

    • D. 

      From the console session, make sure that R1 has a route to the network where the TFTPserver resides.

  • 3. 
    Which device encodes data for transmission across the WAN service provider transmission link?        
    • A. 

      CPE

    • B. 

      DTE

    • C. 

      DCE

    • D. 

      UART

  • 4. 
    Refer to the exhibit. An administrator has added the exhibited commands to routers A and B, but no routing updates are exchanged between the two routers. Based on the information that is given, what is the likely cause of the problem?   .    
    • A. 

      Router A is advertising the wrong network.

    • B. 

      The authentication key strings do not match

    • C. 

      The serial interfaces of routers A and B are not on the same network.

    • D. 

      The authentication key numbers do not match the EIGRP process number for both routers.

  • 5. 
    What are two characteristics of DSL technology? (Choose two.)
    • A. 

      Uploads typically offer larger transfer rates than downloads.

    • B. 

      Service providers deploy DSL in the local loop of the telephone network.

    • C. 

      DSL download rates are reduced by large volumes of POTS voice traffic.

    • D. 

      Filters and splitters allow POTS and DSL traffic to share the same medium.

    • E. 

      DSL is a shared medium that allows many users to share bandwidth available from the DSLAM.

  • 6. 
    An administrator is unable to receive e-mail. While troubleshooting the problem, the administrator is able to ping the local mail server IP address successfully from a remote network and can successfully resolve the mail server name to an IP address via the use of the nslookup command. At what layer of the OSI model is the problem most likely to be found?
    • A. 

      Application

    • B. 

      Transport

    • C. 

      Network

    • D. 

      Data link

  • 7. 
    While troubleshooting a problem with an e-mail server, an administrator observes that the switch port used by the server shows "up, line protocol up". The administrator cannot ping the server. At which layer of the OSI model is the problem most likely to be found? 
    • A. 

      Application layer

    • B. 

      Network layer

    • C. 

      Data link layer

    • D. 

      Physical layer

  • 8. 
      Refer to the exhibit. An ACL called Managers already exists on this router. What happens if the network administrator issues the commands as shown in the exhibit?  
    • A. 

      The new ACL overwrites the existing ACL.

    • B. 

      The network administrator will receive an error message.

    • C. 

      The existing ACL is modified to include the new command.

    • D. 

      A second Managers ACL is created that contains only the new command.

  • 9. 
    Refer to the exhibit. Why are the routers unable to establish a PPP session?  
    • A. 

      The usernames are misconfigured.

    • B. 

      The IP addresses are on different subnets.

    • C. 

      The clock rate is configured on the wrong end of the link.

    • D. 

      The CHAP passwords must be different on the two routers.

    • E. 

      Interface serial 0/0/0 on Router1 must connect to interface serial 0/0/1 on Router2.

  • 10. 
    A technician is talking to a colleague at a rival company and comparing DSL transfer rates between the two companies. Both companies are in the same city, use the same service provider, and have the same rate/service plan. What is the explanation for why Company A reports higher download speeds than Company B?
    • A. 

      Company B has a higher volume of POTS voice traffic than Company A.

    • B. 

      Company B shares the conection to the DSLAM with more clients than Company A.

    • C. 

      Company A. Company A only uses microfilters on branch locations.

    • D. 

      Company A is closer to the service provider.

  • 11. 
    Refer to the exhibit. R1 is performing NAT overload for the 10.1.1.0/24 inside network. HostA has sent a packet to Web Server. What is the destination IP address of the return packet from Web Server when it is received at the NIC on HostA?
    • A. 

      10.1.1.2:1234

    • B. 

      172.30.20.1:1234

    • C. 

      172.30.20.1:3333

    • D. 

      192.168.1.2:80

  • 12. 
    Which protocol is implicitly denied at the end of an IPv4 access list?  
    • A. 

      IP

    • B. 

      TCP

    • C. 

      UDP

    • D. 

      HTTP

  • 13. 
    A network administrator is analyzing the data from a network performance baseline. Which condition will not be indicated in the baseline data?
    • A. 

      The IP addressing scheme of the network

    • B. 

      the most heavily used parts of the network

    • C. 

      congested areas of the network

    • D. 

      Error rates in different parts of the network

  • 14. 
    Refer to the exhibit. An administrator is trying to connect Router1, a Cisco router, to a non-Cisco router using a serial connection. Why is the connection failing?  
    • A. 

      A loopback is not set.

    • B. 

      The interface has been shut down.

    • C. 

      The wrong encapsulation is being used.

    • D. 

      Queuing cannot be used when connecting to non-Cisco devices.

  • 15. 
    Refer to the exhibit. Which statement is true about the WAN switch device?
    • A. 

      It uses a multiport internetworking device to switch traffic such as Frame Relay, ATM or X.25 over the WAN.

    • B. 

      It provides internetworking and WAN access interface ports that are used to connect to the service provider network.

    • C. 

      It provides termination for the digital signal and ensures connection integrity through error correction and line monitoring.

    • D. 

      It converts the digital signals produced by a computer into voice frequencies that can be transmitted over the analog lines of the public telephone network.

  • 16. 
    Refer to the exhibit. Which statement is true about the status of the Frame Relay connection? 
    • A. 

      The Frame Relay connection is in the process of negotiation.

    • B. 

      Only packets with control bit DE set are sent over the PVC. No data traffic traverses the link.

    • C. 

      Packets marked as FECN and BECN indicate that a congestion control mechanism is enabled on the Frame Relay PVC.

    • D. 

      The “DLCI USAGE = LOCAL” status indicates that the PVC link is not established between the interface S0/0/0.1 and the Frame Relay switch.

  • 17. 
    Refer to the exhibit. The hosts in network A all have static addresses that are assigned in the 192.168.2.0./24 network. The hosts in network B are DHCP clients in the 192.168.1.0/24 network. After router R1 has been configured with the statements as shown in the exhibit, the DHCP clients are reporting that they cannot access any network resources. The hosts with static addresses cannot access any resources outside network A. What is the problem?
    • A. 

      The DHCP scope has the wrong address pool.

    • B. 

      The interfaces on R1 are incorrectly addressed.

    • C. 

      The assignable DCHP addresses are all excluded

    • D. 

      The DCHP clients are receiving the wrong default router address.

  • 18. 
    Refer to the exhibit. Router1 and Router2 each support separate areas of a data center, and are connected via a crossover cable. Resources attached to Router1 are unable to connect to resources attached to Router2. What is the likely cause?  
    • A. 

      The crossover cable is faulty.

    • B. 

      The IP addressing is incorrect.

    • C. 

      There is a Layer 2 problem with the router connection.

    • D. 

      The upper layers are experiencing an unspecified problem.

    • E. 

      One or both of the Ethernet interfaces are not working correctly.

  • 19. 
    • At what physical location does the responsibility for a WAN connection change from the service provider to the user?
     
    • A. 

      DMZ

    • B. 

      Local loop

    • C. 

      CSU/DSU

    • D. 

      Demarcation point

  • 20. 
    Because of a remote-procedure call failure, a user is unable to access an NFS server. At what layer of the TCP/IP model does this problem occur? 
    • A. 

      Network layer

    • B. 

      Data link layer

    • C. 

      Physical layer

    • D. 

      Application layer

  • 21. 
    • Which two functions are provided by the Local Management Interface (LMI) that is used in Frame Relay networks? (Choose two.)
    • A. 

      Flow control error

    • B. 

      Notification

    • C. 

      Congestion notification

    • D. 

      The mapping of DLCIs to network addresses

    • E. 

      The sending of keepalive packets to verify operation of the PVC

  • 22. 
    Which protocol is used to authenticate connections over serial links securely?
    • A. 

      CHAP

    • B. 

      HDLC

    • C. 

      SLIP

    • D. 

      PAP

  • 23. 
    Refer to the exhibit. A packet is being sent from Host A to Host B through the VPN tunnel between R1 and R3. When the packet first arrives at R3, what are the source and destination IP addresses of the packet?
    • A. 

      Source 192.168.1.2 - Destination 192.168.4.2

    • B. 

      Source 192.168.3.1 - Destination 192.168.3.2

    • C. 

      Source 192.168.2.1 - Destination 192.168.3.2

    • D. 

      Source 192.168.3.1 - Destination 192.168.4.2

  • 24. 
    Refer to the exhibit. Branch A has a Cisco router and Branch B has a non-Cisco router that is using IETF encapsulation . After the commands that are shown are entered, R2 and R3 fail to establish the PVC. The R2 LMI is Cisco, and the R3 LMI is ANSI. The LMI is successfully established at both locations. Why is the PVC failing?  
    • A. 

      The PVC to R3 must be point-to-point.

    • B. 

      LMI types cannot be different on each end of a PVC.

    • C. 

      A single port can only support one encapsulation type.

    • D. 

      The IETF parameter is missing from the frame-relay map ip 192.168.1.3 203 command.

  • 25. 
    Refer to the exhibit. A network administrator is trying to configure a router to use SDM, but the network administrator cannot access the SDM interface of the router. What is the cause of the problem?
    • A. 

      The VTY lines are misconfigured.

    • B. 

      The HTTP timeout policy is misconfigured.

    • C. 

      The authentication method is misconfigured.

    • D. 

      The username and password are misconfigured.