Computer Networking
The packets switching concept was first proposed

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

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Computer Networking
Satellite-Switched Time-Division Multiple Access (SS/TDMA) is

All of these
the method of determining which device has access to the transmission medium at any time.
a medium access control technique for multiple access transmission media
None of these
a form of TDMA in which circuit switching is used to dynamically change the channel assignments

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