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

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

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Computer Networking
ICMP (Internet Control Message Protocol) is

None of these
a protocol that handles error and control messages
a protocol used to monitor computers
a TCP/IP high level protocol for transferring files from one machine to another
a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address

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