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Computer Networking

Computer Networking
The topology with highest reliability is:

Ring topology
Bus topology
Star topology
Mesh topology

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Computer Networking
Eight stations are competing for the use of a shared channel using the 'Adaptive tree Walk Protocol'. If the stations 7 and 8 are suddenly become ready at once, how many bit slots are needed to resolve the contention?

5 slots
10 slots
14 slots
None of these
7 slots

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Computer Networking
Phase shift keying (psk) method is used to modulate digital signals at 9600 bps using 16 levels. Find the line signaling speed (i.e., modulation rate)

9600 bands
2400 bands
DHCP Management Console
1200 bands
4800 bands

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Computer Networking
What layer of the OSI model would you assume the problem is in if you type show interface serial 1 and receive the following message? "Serial1 is down, line protocol is down."

Physical layer
Data Link layer
Network layer
None. It is a router problem.

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Computer Networking
Which of the following is considered to be the address before translation?

Outside global
Inside local
Outside local
Inside global

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Computer Networking
Which of the following communications modes support two-way traffic but in only one direction of a time?

simplex
None of these
full-of the above
half-duplex
three-quarters duplex

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