Exercise: Networking
Questions for: Networking
What is the usual number of bits transmitted simultaneously in parallel data transmission used by microcomputers?
A:
16
B:
9
C:
8
D:
4
Answer: B
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Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?
A:
Interface
B:
Modem
C:
Attenuation
D:
Teleprocessor
Answer: B
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The cheapest modems can transmit
A:
300 bits per second
B:
1,200 bits per second
C:
2,400 bits per second
D:
4,800 bits per second
Answer: A
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An error-detecting code inserted as a field in a block of data to be transmitted is known as
A:
Frame check sequence
B:
Error detecting code
C:
Checksum
D:
flow control
Answer: A
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The research and development department at your office has been experimenting with different technologies to help improve the performance of the network. One group has been examining the use of a broadband network versus a based band network. Select the correct statement about broadband and baseband.
A:
Broadband networks carry several channels on a single cable, whereas in a baseband network several cables carry one channel
B:
Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable
C:
Baseband refers to local area networks, and broadband refers to wide area networks.
D:
Baseband operates at a standard bit rate, whereas broadband may operate at different rates as needed
Answer: B
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