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Computer Networking

Computer Networking
Who originally designed TCP/IP?

Xerox
IBM
The Department of Defense
None of these
Novell

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Computer Networking
Which utility is useful for finding the local host name?

None of these
Hostname
PING
NBTSTAT
Netstat

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Computer Networking
Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.

KIK (1 + F)
P I (K + 1)
1/ (1 - F)
K I (K - P)
None of these

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Computer Networking
How many OSI layers are covered in the X.25 standard?

two
three
seven
six
None of these

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Computer Networking
Which of the following technique is used for allocating capacity on a satellite channel using fixed-assignment FDM?

Frequency modulation
None of these
Frequency-shift keying
Amplitude modulation
Frequency-division multiple access

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Computer Networking
Which network is a cross between circuits switched network and a data-gram network?

Circuit-switched network
Virtual-circuit identifier
Virtual-circuit network
None of these

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