Computer Networking
Messages from one computer terminal can be sent to another by using data networks. The message to be sent is converted to an electronic digital signal, transmitted via a cable, telephone or satellite and then converted back again at the receiving end. What is this system of sending messages called?

Paperless office
None of these
Electronic newspaper
Electronic mail
Global network

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

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Computer Networking
Carrier is

the condition when two or more sections attempt to use the same channel at the same time
a continuous frequency capable of being modulated or impressed with a second signal
a collection of interconnected functional units that provides a data communications service among stations attached to the network
None of these
One or more conductors that serve as a common connection for a related group of devices

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Computer Networking
What does the passive command provide to dynamic routing protocols?

Stops an interface from sending or receiving periodic dynamic updates.
Stops the router from receiving any dynamic updates.
Stops the router from sending any dynamic updates.
Stops an interface from sending periodic dynamic updates but not from receiving updates.

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