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Computer Networking

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

23
12
40
3

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Computer Networking
A protocol is a set of rules governing a time sequence of events that must take place

between modems
across an interface
None of these
between peers
between an interface

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Computer Networking
A 4 KHz noiseless channel with one sample every 125 per sec, is used to transmit digital signals. Find the bit rate (bits per second) that are sent, if CCITT 2.048 Mbps encoding is used.

None of these
8 Kbps
500 Kbps
64 Kbps
32 Kbps

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Computer Networking
Which of the following TCP/IP protocol is used for remote terminal connection service?

RARP
None of these
FTP
UDP
TELNET

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Computer Networking
What frequency range is used for TV transmission and low power microwave applications?

Ultra High Frequency : 300 MHz to 3000 MHz
Medium Frequency : 300 kHz to 3 MHz
Super High Frequency : 3000 MHz to 30000 MHz
None of these
Very Low Frequency : 3 kHz to 30 kHz

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

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

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