Computer Networking
Communication circuits that transmit data in both directions but not at the same time are operating in

a simplex mode
a full-duplex mode
an asynchronous mode
a half-duplex mode
None of these

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Computer Networking
What does a VLAN do?

Provides multiple collision domains on one switch port.
Breaks up broadcast domains in a layer 2 switch internetwork.
Provides multiple broadcast domains within a single collision domain.
Acts as the fastest port to all servers.

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