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

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Computer Networking
Communication network is

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

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Computer Networking
A WATS arrangement

is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
None of these
is never less expensive than flat-rate service
is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
is always less expensive than flat-rate service

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