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Computer Networking

Computer Networking
Videotex is a combination of

computer technology
None of these
communication
All of these
television

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Computer Networking
Which of the following transmission systems provides the highest data rate to an individual device

leased lines
Computer bus
Telephone lines
None of these
Voice band modem

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Computer Networking
Twisted pair wires, coaxial cable, optical fiber cables are the examples of:

Wired Media
None of these
Wireless Media
Both A & B

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Computer Networking
Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?

IPSec
Cable
VPN
HDLC
xDSL

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Computer Networking
Error detection at the data link level is achieved by

Hamming Code
Bit Stuffing
Cyclic Redundancy Code
Equalization

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Computer Networking
A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent?

64 Kbps
128 Kbps.
None of these
32 Kbps
8 Kbps

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