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Answer: B, C
Explanation: The show ip route command displays the contents of the IP routing table. The routing table
includes entries for all known networks and subnetworks plus it displays how the information was learnd. The
show frame-relay map command show the Frame Relay DLCI-to-IP address mappings. When the results of
these two commands are considered together will provide the data needed to determine routing information.
Incorrect Answers:
A and D are incorrect; neither are valid commands.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 280-281, 431-432.
Q. 151
What are three benefits of integrated services digital network (ISDN)? (Choose three)
A. PVCs are faster and more reliable.
B. No specialized equipment is required.
C. Data transfer is faster than typical modems.
D. Call setup is faster than with standard telephone service.
E. It carries many types of data traffic such as voice, video, and data.
Answer: C, D, E
Explanation:
Brining digital connectivity via ISDN to a site has many benefits. These benefits include:
- The capability to carry a variety of user-traffic feeds. ISDN provides access to all-digital facilities for videos,
voice, packet-switched data, and enriched telephone network services.
- Much faster call setup than modem connections. ISDN can be set up in less than a second.
- Much faster data transfer for ISDN (64 kbps) than modems (28.8 to 56 kbps).
Incorrect Answers:
A is incorrect; PVCs are used in Frame Relay connections and not in ISDN.
B is incorrect; ISDN does need specialized equipment such as TE1, NT2, NT1, TE2, and TAs.
Steve McQuerry. Interconnecting Cisco Network Devices
. (Cisco Press: 2000) pages 387-393.
Q. 152
What are two functions of ICMP protocol? (Choose Two)