Computer Networking
The frequency range : 300 kHz to 3 MHz is used for

AM radio transmission
None of these
TV transmission
FM radio transmission
microwave communications, satellite and radar

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Computer Networking
Bus is

one or more conductors that some 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
the condition when two or more stations attempt to use the same channel at the same time
None of these
a continuous frequency capable of being modulated or impressed with a second signal

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Computer Networking
HDLC (High-level Data Link Control) is

None of these
a method of determining which device has access to the transmission medium at any time
a method access control technique for multiple-access transmission media
a very common bit-oriented data link protocol issued by ISO.
network access standard for connecting stations to a circuit-switched network

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