Computer Networking
Communication network is

the condition with two or more stations attempt to use the same channel at the same time
a continuous frequency capable of being modulated or impressed with a second signal
one or more conductors that serve as a common connection for a related group of devices
a collection of interconnected functional units that provides a data communications service among stations attached to the network
None of these

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Computer Networking
Terminals are used to

None of these
All of these
communicate management decisions to the physical system
collect data from the physical system
provide information for the manager

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Computer Networking
Demodulation is a process of

performing data description.
converting analog to digital signals
multiplexing various signals into one high speed line signals
converting digital to analog signals

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Computer Networking
RS-232-G

is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment
specifies only the mechanical characteristics of an interface by providing a 25-pin connector
None of these
requires only 7 pin out of 25 in order to transmit digital data over public telephone lines
is an interface between two data circuit terminating equipment as examplified by a local and remote modem

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