Computer Networking
A required characteristic of an online real-time system is:

All of these
more than one CPU
None of these
no delay in processing
offline batch processing

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Computer Networking
The packets switching concept was first proposed

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

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