CCNA 4 Chapter 3 2017 Exam Answers 100%

CCNA 4 Chapter 3 Exam Answers Full

  1. Which is the default encapsulation on a serial connection for Cisco?
    A. MPLS
    B. HDLC
    C. PPP
    D. PPPoE
  2. You are connecting a Cisco router to a leased line serial connection. The other side of the connection has non-Cisco equipment. Which protocol should you choose for compatibility?
    A. HDLC
    B. PPP
    C. PPPoE
    D. X.25
  3. Which sub-protocol inside of the PPP suite is responsible for tagging layer 3 protocols so that multiple protocols can be used over a PPP connection?
    A. MPLS
    B. NCP
    C. LCP
    D. PCP
  4. Which command will configure PPP on a serial interface?
    A. Router(config-if)#encapsulation ppp
    B. Router(config-if)#protocol ppp
    C. Router(config-if)#ppp enable
    D. Router(config-if)#ppp protocol
  5. Which sub-protocol inside of the PPP suite is responsible for authentication?
    A. MPLS
    B. NCP
    C. LCP
    D. ACP
  6. Which encapsulation protocol is used with PPP to transmit data over serial links?
    A. PPPoE
    B. HDLC
    C. MPLS
    D. X.25
  7. Which authentication method used with PPP uses a nonce (random number) to hash the password and prevent replay attacks?
    A. PAP
    B. PSAP
    C. CHAP
    D. NTLM
  8. Which sub-protocol inside of the PPP suite facilitates multilink connections?
    A. MPLS
    B. NCP
    C. LCP
    D. ACP
  9. Which is a benefit of using MLPPP?
    A. Simplified layer 3 configuration
    B. Does not require routing protocols
    C. Does not require authentication protocols
    D. Provides end-to-end encryption
  10. Which configuration will create the multilink interface for an MLPPP connection to an adjoining router?
    A. RouterA(config)#interface multilink 1
    RouterA(config-if)#encapsulation ppp
    RouterA(config-if)#ppp multilink
    RouterA(config-if)#ip address 192.168.1.1 255.255.255.0
    RouterA(config-if)#ppp multilink group 1

    B. RouterA(config)#interface multilink 1
    RouterA(config-if)#ppp multilink
    RouterA(config-if)#ip address 192.168.1.1 255.255.255.0

    C. RouterA(config)#interface multilink 1
    RouterA(config-if)#encapsulation ppp multilink

    D. RouterA(config)#interface multilink 1
    RouterA(config-if)#ip address 192.168.1.1 255.255.255.0
    RouterA(config-if)#ppp multilink group 1

  11. Which command will allow verification of the active links in a multilink connection?
    A. Router#show multilink
    B. Router#show ppp multilink
    C. Router#show ppp
    D. Router#show run
  12. You need to set up PPP authentication for RouterA. The adjoining router is named RouterB, and both routers will have a matching password of cisco. Which commands will achieve this?

    A. RouterA(config)#username RouterA password cisco
    RouterA(config)#interface serial 0/1/0
    RouterA(config-if)#ppp authentication chap pap

    B. RouterA(config)#username RouterB password cisco
    RouterA(config)#interface serial 0/1/0
    RouterA(config-if)#ppp authentication chap pap

    C. RouterA(config)#username RouterA cisco
    RouterA(config)#interface serial 0/1/0
    RouterA(config-if)#ppp authentication chap pap

    D. RouterA(config)#username RouterA password cisco
    RouterA(config)#interface serial 0/1/0
    RouterA(config-if)#authentication chap pap

  13. Which command will allow you to diagnose PPP authentication failures?
    A. Router#debug ppp authentication
    B. Router#debug ppp
    C. Router#show interface
    D. Router#debug ppp events
  14. Which command will allow you to see the authentication protocol that PPP has authenticated with on the adjoining router?
    A. RouterA#show interface
    B. RouterA#show ppp all
    C. RouterA#debug ppp
    D. RouterA#show running-configuration
  15. In the following exhibit, what does the line LCP closed mean?
    A. The LCP process has completed.
    B. The router does not have an IP address configured.
    C. The serial line is disconnected.
    D. The LCP process has not completed.
  16. Which command will configure PPP to support CHAP first and PAP if CHAP is not supported?
    A. Router(config-if)#authentication pap chap
    B. Router(config-if)#ppp authentication chap pap
    C. Router(config-if)#authentication chap pap
    D. Router(config-if)#ppp authentication chap
  17. In the following exhibit, Router A is configured for PPP multilink to Router B. However, the multilink is not functioning properly. What is the problem?
    A. The serial interfaces are not configured with an IP address.
    B. The serial interfaces should not be configured with the encapsulation.
    C. All links in the multicast bundle must have the same multilink group.
    D. The multilink group should not be configured on the multilink interface.
  18. In the following exhibit, Router A will not form a PPP connection with Router B.What is the problem?
    A. The username on Router A should match Router A’s hostname and the username on Router B should match Router B’s hostname.
    B. The bandwidth should be configured the same on both routers.
    C. The interfaces on Router A and Router B should be matching for authentication purposes.
    D. The encapsulation on both routers should be configured as PPP.
  19. You have set up a PPP multilink connection between two routers. You want to add authentication. Where should you configure the authentication?
    A. On the multilink interface
    B. On the first serial interface in the bundle
    C. On both serial interfaces in the bundle
    D. On the multilink group that joins the bundle
  20. In the following exhibit, Router A will not form a PPP connection with Router B. What is the problem?
    A. The IP addresses on Router A and Router B are not in the same subnet.
    B. The bandwidth should be configured the same on both routers.
    C. The username on Router A should match Router A’s hostname and the
    username on Router B should match Router B’s hostname.D. The passwords on both routers do not match.

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