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.

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

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Computer Networking
Modulation is the process of

converting digital signals to analog signals
performing data encryption.
converting analog signals to digital signals
Multiplexing various signals into high speed line signals

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