Computer Networking
How much power (roughly) a light-emitting diode can couple into an optical fiber?

100 picowatts
None of these
10 milliwatts
440 microwatts
100 microwatts

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Computer Networking
The packets switching concept was first proposed

in the early 1960s for military communication systems, mainly to handle speech
in the late 1980s for the Defense Ministry of US.
None of these
in the late 1950s for Defense Ministry of US
All of these

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Computer Networking
Which of the following is true regarding access lists applied to an interface?

You can apply only one access list on any interface.
One access list may be configured, per direction, for each layer 3 protocol configured on an interface.
You can place as many access lists as you want on any interface until you run out of memory.
You can apply two access lists to any interface.

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Computer Networking
You need to create an access list that will prevent hosts in the network range of 192.168.160.0 to 192.168.191.0. Which of the following lists will you use?

access-list 10 deny 192.168.0.0 0.0.31.255
access-list 10 deny 192.168.160.0 255.255.224.0
access-list 10 deny 192.168.160.0 0.0.191.255
access-list 10 deny 192.168.160.0 0.0.31.255

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