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Computer Networking

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
HDLC
xDSL
VPN
Cable

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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
500 Kbps
8 Kbps
32 Kbps
64 Kbps

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Computer Networking
A distributed network configuration in which all data/information pass through a central computer is

star network
None of these
ring network
Point-to-point network
bus network

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Computer Networking
Which of the following network access standard is used for connecting stations to a packet-switched network?

None of these
X.75
X.3
X.25
X.21

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Computer Networking
Which of the following is an important characteristic of LAN?

unlimited expansion
application independent interfaces
parallel transmission
None of these
low cost access for low bandwidth channels

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Computer Networking
In cyclic redundancy checking, the divisor is _____ the CRC.

two bits more
None of these
one bit less than
one bit more than
the same size as

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