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.

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

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Computer Networking
Demodulation is the process of

None of these
converting analog signals to digital signals
converting digital signals to analog signals
dividing the high-speed signals into frequency bands
combining many low speed channels into one high speed channel

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