Computer Science - Networking

11.
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?
1 slots
5 slots
10 slots
14 slots
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?
80
100
30
150
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
Modulation in which the two binary values are represented by two different amplitudes of the carrier frequency is known as
Amplitude-shift keying
Amplitude
Amplitude modulation
Aloha
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
You have been contracted to install a windows NT network in an office that is located in a strip mall. The office is located next to the power plant of the building, so a UPS (uninterruptible power supply) has already been installed. What type of cable should you use for the network cabling? Choose the best answer.
TI
UTP
Fiber-optic
PSTN
STP
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
Communication circuits that transmit data in both directions but not at the same time are operating in
a simplex mode
a half-duplex mode
a full-duplex mode
an asynchronous mode
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.