Computer Networking
Modulation in which the two binary values are represented by two different amplitudes of the carrier frequency is known as

Amplitude
None of these
Amplitude-shift keying
Aloha
Amplitude modulation

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Computer Networking
TCP is:

Connectionless and unreliable
Operates at the Data Link layer
Connection orientated and unreliable
None of these
Connection orientated and reliable

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Computer Networking
The packets switching concept was first proposed

in the late 1950s for Defense Ministry of US
in the late 1980s for the Defense Ministry of US.
All of these
in the early 1960s for military communication systems, mainly to handle speech
None of these

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