Cisco Systems 2 manual 640

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Explanation: There are a number of WAN encapsulation types available. The two most commonly used are Point-to-Point Protocol (PPP) and Cisco High-Level Data Link Control (HDLC). The reason HDLC is employed so much is that it is the default encapsulation type on point-to-point dedicated links and circuit switched connections. PPP is a non-proprietary encapsulation and this is while it is used to communicate between devices from different vendors.

Incorrect Answers:

A is incorrect; IP and IPX are not encapsulation types. They are routing protocols.

B is incorrect; only PPP is an encapsulation type.

C is incorrect; SDLC is a protocol used in IBM SNA systems.

Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 372-376.

Q. 149

Which two steps are parts of the process of creating Frame Relay subinterfaces on a point-point connection? (Choose Two)

A.Configure the router to forward all broadcast packets

B.Remove any network address assigned to the physical interface

C.Configure the local data-link connection identifier for the subinterfaces

D.Partition the total committed information rate available among the subinterfaces

Answer: B, C

Explanation: There are a number of things that must be done to configure a subinterface. Two of these steps

are: the removal of the network address from the physical interface and assign that address to the subinterface and configure the DLCI for the subinterface.

Incorrect Answers:

A is incorrect; this is not a frame-relay task and in fact if it was done loops would most likely occur. D is incorrect; this is not done during frame-relay subinterface creation.

Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 428-429.

Q. 150

Your network is having IP problems connecting to one or more Frame Relay peer routers. Which two commands should you use to show the routers that are reachable? (Choose two)

A.show IP map

B.show IP route

C.show frame-relay map

D.debug frame-relay map

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