Computer Networking
What are reasons for creating OSPF in a hierarchical design?1. To decrease routing overhead2. To speed up convergence3. To confine network instability to single areas of the network4. To make configuring OSPF easier

3 and 4
1, 2 and 3
3 only
2, 3 nd 4

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Computer Networking
Baseband is

transmission of signals without modulation
a signal all of whose energy is contained within a finite frequency range
the simultaneous transmission of data to a number of stations
All of these
None of these

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Computer Networking
Which of the following characteristic(s) is/are suited to the PSS applications?

Multiple remote host or applications accessed by a single local access circuit terminal and circuit
widely dispersed terminals and access to international packets switched services
None of these
bursty traffic and low communications intensity
All of these

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