Computer Networking
Which of the following is a wrong example of network layer?

X.25 level 2-ISO
X.25 Packet Level Protocol (PLP)-ISO
Internet Protocol (IP) - ARPANET
Source routing and domain naming-USENet

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Computer Networking
The application layer of a network

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

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