Computer Networking
Which of the following describe the process identifier that is used to run OSPF on a router?1. It is locally significant.2. It is globally significant.3. It is needed to identify a unique instance of an OSPF database.4. It is an optional parameter required only if multiple OSPF processes are running on the router.

IS-IS
3 and 5
1 and 3
All of these
1, 2 and 4

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Computer Networking
A network administrator views the output from the show ip route command. A network that is advertised by both RIP and IGRP appears in the routing table flagged as an IGRP route. Why is the RIP route to this network not used in the routing table?

IGRP has a faster update timer.
RIP has a higher metric value for that route.
The IGRP route has fewer hops.
IGRP has a lower administrative distance.

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Computer Networking
The Internet Control Message Protocol (ICMP)

All of these
provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another
None of these
allows gateways to send error a control messages to other gateways or hosts
reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem

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Computer Networking
What is the problem with an interface if you type show interface serial 0 and receive the following message? "Serial0 is administratively down, line protocol is down."

The administrator is pinging from the interface.
The keepalives are different times.
No cable is attached.
The administrator has the interface shut down.

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