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- Question
What is the name of the device that connects two computers by means of a telephone line?
Options- A. Tape
- B. modem
- C. bus
- D. cable
- E. None of the above
- Correct Answer
- modem
- 1. An error detecting code is which code is the remainder resulting from dividing the bits to be checked by a predetermined binary number, is known as
Options- A. Cyclic redundancy check
- B. Checksum
- C. Error detecting code
- D. Error rate
- E. None of the above Discuss
- 2. In OSI network architecture, the routing is performed by
Options- A. network layer
- B. data link layer
- C. transport layer
- D. session layer
- E. None of the above Discuss
- 3. Which of the following communications lines is best suited to interactive processing applications?
Options- A. narrowband channels
- B. simplex lines
- C. full-duplex lines
- D. mixed band channels
- E. None of the above Discuss
- 4. On a class B network, how many subnets are available with a subnet mask of 248?
Options- A. 2
- B. 6
- C. 30
- D. 62
- E. 126 Discuss
- 5. What is the first octet range for a class A IP address?
Options- A. 1 - 126
- B. 192 - 255
- C. 192 - 223
- D. 1 - 127
- E. 128 - 191 Discuss
- 6. The area of coverage of a satellite radio beam is known as
Options- A. Footprint
- B. Circular polarization
- C. Beam width
- D. Identity
- E. None of the above Discuss
- 7. Typewriter terminals can print computer-generated data at a rate of
Options- A. 10 characters per second
- B. 120 characters per second
- C. 120 characters per minute
- D. 1200 characters per minute
- E. None of the above Discuss
- 8. After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?
Options- A. Telex
- B. Word processor
- C. Facsimile
- D. Electronic mail
- E. None of the above Discuss
- 9. RS-232-G
Options- A. is an interface between two data circuit terminating equipment as examplified by a local and remote modem
- B. is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment
- C. specifies only the mechanical characteristics of an interface by providing a 25-pin connector
- D. requires only 7 pin out of 25 in order to transmit digital data over public telephone lines
- E. None of the above Discuss
- 10. In a _____ topology, if there are n devices in a network, each device has n - 1 ports for cables.
Options- A. ring
- B. bus
- C. star
- D. mesh
- E. None of the above Discuss
Networking problems
Search Results
Correct Answer: Cyclic redundancy check
Correct Answer: network layer
Correct Answer: full-duplex lines
Correct Answer: 30
Correct Answer: 1 - 126
Correct Answer: Footprint
Correct Answer: 120 characters per second
Correct Answer: Facsimile
Correct Answer: is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment
Correct Answer: mesh
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