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.

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

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Computer Networking
Contention is

a collection of interconnected functional units that provides a data communications service among stations attached to the network
None of these
the condition when two or more stations attempt to use the same channel at the same time
One or more conductors that serve as a common connection for a related group of devices
a continuous frequency capable of being modulated or impressed with a second signal

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