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Computer Networking

Computer Networking
How many OSI layers are covered in the X.25 standard?

seven
None of these
six
three
two

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Computer Networking
What frequency range is used for FM radio transmission?

Very Low Frequency : 3 kHz to 30. kHz
Low Frequency : 30 kHz to 300 kHz
Very High Frequency : 30 MHz to 300 MHz
High Frequency : 3 MHz to 30 MHz
None of these

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Computer Networking
A noiseless 3 KHz Channel transmits bits with binary level signals. What is the maximum data rate?

12 Kbps
24 Kbps.
3 Kbps
6 Kbps

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Computer Networking
The most flexibility in how devices are wired together is provided by

bus networks
star networks
None of these
ring networks
T-switched networks

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Computer Networking
You are working with a network that is 172.16.0.0 and would like to have the maximum number of hosts per subnet. This assumes support for eight subnets. What subnet mask should you use?

255.255.240.0
255.255.255.0
255.255.248.0
255.255.224.0
255.255.192.0

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Computer Networking
Which of the following ISO level is more closely related to the physical communications facilities?

Application
Session
Networking
Data Link

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