Computer Networking
Intranets and extranets can use their network fire walls and other security features to establish secure Internet links within an enterprise or with its trading partners. Select the best fit for answer:

Virtual Private Network
Network Server
OSI
Network operating system

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Computer Networking
Communication network is

a collection of interconnected functional units that provides a data communications service among stations attached to the network
a continuous frequency capable of being modulated or impressed with a second signal
None of these
the condition with two or more stations attempt to use the same channel at the same time
one or more conductors that serve as a common connection for a related group of devices

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Computer Networking
TCP is:

Connection orientated and unreliable
Connection orientated and reliable
Connectionless and unreliable
None of these
Operates at the Data Link layer

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Computer Networking
Synchronous protocols

are generally used by personal computers
None of these
are more reliable
transmit characters one at a time
allow faster transmission than asynchronous protocols do

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