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Computer Networking

Computer Networking
What is the first octet range for a class B IP address?

192 - 223
128 - 255
127 - 191
128 - 191
1 - 127

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Computer Networking
Which of the following communications modes support two-way traffic but in only one direction of a time?

simplex
half-duplex
None of these
three-quarters duplex
full-of the above

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Computer Networking
Which of the following is an example of a standard IP access list?

access-list 110 permit host 1.1.1.1
access-list 1 deny 172.16.10.1 0.0.0.0
access-list standard 1.1.1.1
access-list 1 permit 172.16.10.1 255.255.0.0

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Computer Networking
You telnet to a router and make your necessary changes; now you want to end the Telnet session. What command do you type in?

disable
exit
disconnect
close

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Computer Networking
What information is displayed by the show hosts command?1. Temporary DNS entries2. The names of the routers created using the hostname command3. The IP addresses of workstations allowed to access the router4. Permanent name-to-address mappings created using the ip host command5. The length of time a host has been connected to the router via Telnet

All of these
3, 4, and 5
1, 2 and 3
1 and 4

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Computer Networking
After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?

Facsimile
Word processor
None of these
Electronic mail
Telex

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