Computer Networking
HMP (Host Monitoring Protocol) is:

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

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

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

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