Computer Networking
The application layer of a network

consists of software being run on the computer connected to the network
None of these
establishes, maintains, and terminates virtual circuits
defines the user's port into the network
All of these

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Computer Networking
CSMA (Carrier Sense Multiple Access) is

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

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