Computer Networking
The fundamental requirements of private-to-public network interconnection methods which need to be provided in gateways is/are

adequate cost control mechanisms for administration of the private networks
A and B both
universal accessibility for private network Data Terminal Equipment (DTE)
None of these
to assign address to private network DTEs

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Computer Networking
Bulletin board system

is a modem capable of accepting commands
converts analog signals to digital signals
None of these
is a public access message system
converts digital signals to analog signals

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Computer Networking
The application layer of a network

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

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Computer Networking
HDLC (High-level Data Link Control) is

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

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