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

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

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Computer Networking
The data-link layer, in reference to the OSI model, specifies

None of these
the virtual circuit interface to packet-switched service
the interface between the X.25 network and packet mode device
data link procedures that provide for the exchange of data via frames that can be sent and received
All of these

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