Computer Networking
In a PC to telephone hookup for long distance communication, modem is connected between the telephone line and

crossover cable
asynchronous port
synchronous port
None of these
PC

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Computer Networking
ICMP (Internet Control Message Protocol) is

a protocol used to monitor computers
a protocol that handles error and control messages
None of these
a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
a TCP/IP high level protocol for transferring files from one machine to another

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Computer Networking
The difference between a multiplexer and a statistical multiplexer is

Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol
Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)
None of these
Multiplexers often waste the output link capacity while statistical multiplexers optimize its use
Statistical multiplexers need buffers while multiplexers do not need buffers

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