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
2, 3 and 4
1 only
2 and 3

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Computer Networking
You want to create a standard access list that denies the subnet of the following host: 172.16.144.17/21. Which of the following would you start your list with?

access-list 10 deny 172.16.136.0 0.0.15.255
access-list 10 deny 172.16.64.0 0.0.31.255
access-list 10 deny 172.16.48.0 255.255.240.0
access-list 10 deny 172.16.144.0 0.0.7.255

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Computer Networking
Bandlimited signal is

a signal all of whose energy is contained within a finite frequency range
simultaneous transmission of data to a number of stations
All of these
transmission of signals without modulation
None of these

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