Computer Networking
In OSI model, which of the following layer transforms information from machine format into that understandable by user

None of these
session
presentation
physical
application

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Computer Networking
The packets switching concept was first proposed

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

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Computer Networking
Demodulation is a process of

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

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