ICND2 – WAN Questions

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Question 1

[am4show have=’p2;’]Refer to the exhibit. The show interfaces serial 0/1 command was issued on the R10-1 router. Based on the output displayed which statement is correct?

A. The cable connected to the serial 0/1 interface of the R10-1 router is a DTE cable.
B. The R10-1 router can ping the router interface connected to the serial 0/1 interface.
C. The clock rate used for interface serial 0/1 of the R10-1 router is 1,544,000 bits per second.
D. The CSU used with the serial 0/1 interface of the R10-1 router has lost connection to the service provider.
E. The interface of the remote router connected to the serial 0/1 interface of the R10-1 router is using the default serial interface encapsulation.

 

Answer: E[/am4show]

Explanation

From the output, we see the the line “Serial0/1 is up, line protocol is up”. That means the link is good and the interface is functioning normally. Also the encapsulation used on this interface is HDLC -> The other end must use the same encapsulation. Otherwise the line protocol will go down.

Question 2

[am4show have=’p2;’]Which two options are valid WAN connectivity methods? (Choose two)

A. PPP
B. WAP
C. DSL
D. L2TPv3
E. Ethernet

 

Answer: A C[/am4show]

Question 3

[am4show have=’p2;’]Which device classes are used over serial links?

A. DCE
B. DTE
C. LCP
D. HDLC
E. PPP
F. LMI

 

Answer: A B[/am4show]

Question 4

[am4show have=’p2;’]Which WAN technology uses labels to make decisions about data forwarding?

A. Metro Ethernet
B. Frame Relay
C. MPLS
D. ISDN
E. VSAT

 

Answer: C[/am4show]

Question 5

[am4show have=’p2;’]Which WAN solution is secured by default?

A. VPN
B. DSL
C. LCP
D. PPP

 

Answer: A[/am4show]

Question 6

[am4show have=’p2;’]Which WAN topology provides a direct connection from each site to all other sites on the network?

A. single-homed
B. full mesh
C. point-to-point
D. hub-and-spoke

 

Answer: B[/am4show]

Question 7

[am4show have=’p2;’]After you configure a GRE tunnel between two networks, the tunnel comes up normally, but workstations on each side of the tunnel cannot communicate. Which reason for the problem is most likely the true?

A. The tunnel source address is incorrect.
B. The tunnel destination address is incorrect.
C. The route between the networks is undefined.
D. The IP MTU is incorrect.
E. The distance configuration is missing.

 

Answer: C[/am4show]

Question 8

[am4show have=’p2;’]What is the default encapsulation type for Cisco WAN serial interfaces?

A. GRE
B. PPP
C. Frame Relay
D. IEEE 802.1Q
E. HDLC

 

Answer: E[/am4show]