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Computer Networking

Computer Networking
A medium access control technique for multiple access transmission media is

None of these
Amplitude
Angle modulation
Aloha
Attenuation

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Computer Networking
Which transmission mode is used for data communication along telephone lines?

Synchronous
None of these
Parallel
Serial
Asynchronous

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Computer Networking
On a class B network, how many subnets are available with a subnet mask of 248?

30
2
6
126
62

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Computer Networking
Which of the following provides a storage mechanism for incoming mail but does not allow a user to download messages selectively?

POP3
SMTP
IMAP
DHCP
2

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Computer Networking
How many non-overlapping channels are available with 802.11b?

23
3
40
12

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Computer Networking
Which statement is true regarding classless routing protocols?1. The use of discontiguous networks is not allowed.2. The use of variable length subnet masks is permitted.3. RIPv1 is a classless routing protocol.4. IGRP supports classless routing within the same autonomous system.5. RIPv2 supports classless routing.

3 and 4
1, 3 and 5
None of these
2 and 5

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