Computer Networking
What is the name of the software package that allows people to send electronic mail along a network of computers and workstations?

None of these
Data communication package
Project management package
Memory resident package
Electronic mail package

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Computer Networking
The packets switching concept was first proposed

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

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Computer Networking
MAC is

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

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