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Computer Networking

Computer Networking
On a class B network, how many hosts are available at each site with a subnet mask of 248?

2,046
16,382
8,190
1,022
4,094

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Computer Networking
The synchronous modems are more costly than the asynchronous modems because

they operate with a larger bandwidth
they contain clock recovery circuits
they produce large volume of data
they transmit the data with stop and start bits.
None of these

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Computer Networking
An internetworking protocol that provides virtual circuit service across multiple X.25 protocol, is

X.75
None of these
X.21
X.400
X.25

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Computer Networking
The transfer of data from a CPU to peripheral devices of a computer is achieved through

buffer memory
modems
interfaces
computer ports
None of these

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Computer Networking
Which of the following protocols uses both TCP and UDP?

DNS
SMTP
Telnet
FTP

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Computer Networking
Which of the following summation operation is performed on the bits to check an error-detecting code?

Coder-decoder
None of these
Attenuation
Codec
Checksum

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