Computer Networking
What does a VLAN do?

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

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Computer Networking
A front-end processor is

None of these
a user computer system
preliminary processor of batch jobs.
a processor in a large-scale computer that executes operating system instructions
a minicomputer that relieves main-frame computers at a computer centre of communications control functions

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