Computer Networking
Which of the following best illustrates the default subnet mask for a class A,B, and C Network?

255.0.0.0, 255.255.0.0, 255.255.255.0
0.0.0.0, 0.0.0.1, 0.0.1.1
255.255.255.0, 255.255.0.0, 255.0.0.0
255.255.0.0, 255.255.255.0, 255.255.255.255
None of these

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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 172.16.64.0 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
access-list 10 deny 172.16.136.0 0.0.15.255

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Computer Networking
A T-switch is used to

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

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