Computer Networking
A T-switch is used to

control how messages are passed between computers
echo every character that is received
None of these
rearrange the connections between computing equipment
transmit characters one at a time

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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
None of these
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

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