Networking – Section 9

1. Telecommunications networks come in a wide range of speed and capacity capabilities. Select the best fit for answer:

A. Bandwidth alternatives
B. Switching alternating
C. Inter organizational networks
D. Extranets

Correct Answer: A. Bandwidth alternatives

2. Which of the following statements is correct?

A. characteristic of the hub architecture of ARC-net is alternative routing.
B. characteristic of LAN is unlimited expansion
C. characteristic of LAN is low cost access for low bandwidth channels
D. characteristic of the hub architecture of ARC-net is directionalized transmission
E. None of the above

Correct Answer: D. characteristic of the hub architecture of ARC-net is directionalized transmission

3. A modem is connected in between a telephone line and a

A. network
B. computer
C. communication adapter
D. serial port
E. None of the above

Correct Answer: C. communication adapter

4. What frequency range is used for TV transmission and low power microwave applications?

A. Very Low Frequency : 3 kHz to 30 kHz
B. Medium Frequency : 300 kHz to 3 MHz
C. Ultra High Frequency : 300 MHz to 3000 MHz
D. Super High Frequency : 3000 MHz to 30000 MHz
E. None of the above

Correct Answer: C. Ultra High Frequency : 300 MHz to 3000 MHz

5. Which of the following statement is correct?

A. Satellite transponders use a higher frequency for reception of radiation from earth stations and lower frequency for transmission to earth stations.
B. Satellite transponders contain a device that echos the radiation without change from one point on earth to another
C. Satellite transponder contain devices that transform the message sent from one location on earth to a different code for transmission to another location
D. satellite transponders us lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations
E. None of the above

Correct Answer: A. Satellite transponders use a higher frequency for reception of radiation from earth stations and lower frequency for transmission to earth stations.

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