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 operating system
Network Server
OSI

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Computer Networking
Baseband is

None of these
the simultaneous transmission of data to a number of stations
a signal all of whose energy is contained within a finite frequency range
All of these
transmission of signals without modulation

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