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Computer Networking

Computer Networking
The loss in signal power as light travels down the fiber is called

attenuation
interruption
None of these
propagation
scattering

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Computer Networking
What is the name of the device that converts computer output into a form that can be transmitted over a telephone line?

Teleport
Modem
Concentrator
None of these
Multiplexer

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Computer Networking
The systematic access of small computers in a distributed data processing system is referred to as:

multiplexing
conversational mode
dialed service
None of these
polling

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Computer Networking
Which of the following are valid ways to refer only to host 172.16.30.55 in an IP access list? 1. 172.16.30.55 0.0.0.255 2. 172.16.30.55 0.0.0.0 3. any 172.16.30.55 4. host 172.16.30.55 5. 0.0.0.0 172.16.30.55 6. ip any 172.16.30.55

2 and 4
3 and 5
1 and 4
1, 4 and 6

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Computer Networking
Eight stations are competing for the use of the shared channel using the modified Adaptive free walk protocol by Gallager. If the stations 7 and 8 are suddenly become ready at once, how many bit slots are needed to resolve the contention?

14 slots
None of these
10 slots
5 slots
1 slots

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Computer Networking
If an Ethernet port on a router were assigned an IP address of 172.16.112.1/25, what would be the valid subnet address of this host?

172.16.0.0
172.16.96.0
172.16.255.0
172.16.112.0

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