Computer Networking
Which of the following technique is used for fragment?

All of these
a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame
a technique used in best-effort delivery systems to avoid endlessly looping packets
None of these
one of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size

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

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

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Computer Networking
ICMP (Internet Control Message Protocol) is

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

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