Computer Networking
Which statements are true regarding ICMP packets?1. They acknowledge receipt of a TCP segment.2. They guarantee datagram delivery.3. They can provide hosts with information about network problems.4. They are encapsulated within IP datagrams.

2, 3 and 4
3 and 4
1 only
2 and 3

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Computer Networking
A T-switch is used to

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

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