Networking problems
- 1. Which of the following technique is used for allocating capacity on a satellite channel using fixed-assignment FDM?
Options- A. Amplitude modulation
- B. Frequency-division multiple access
- C. Frequency modulation
- D. Frequency-shift keying
- E. None of the above Discuss
Correct Answer: Frequency-division multiple access
- 2. The 802.5 standard implements a way for preventing collisions on the network. How are collisions prevented when using this standard?
Options- A. CSMA/CD
- B. Token passing
- C. Collision detection
- D. Time sharing
- E. Switched repeaters Discuss
Correct Answer: Token passing
- 3. Which of the following summation operation is performed on the bits to check an error-detecting code?
Options- A. Codec
- B. Coder-decoder
- C. Checksum
- D. Attenuation
- E. None of the above Discuss
Correct Answer: Checksum
- 4. The X.25 standard specifies a
Options- A. technique for start-stop data
- B. technique for dial access
- C. DTE/DCE interface
- D. data bit rate
- E. None of the above Discuss
Correct Answer: DTE/DCE interface
- 5. Alice is setting up a small network in her home so that she can study for her MCSE exams. She doesn't have a lot of money to spend on hardware, so she wants to use a network topology that requires the least amount of hardware possible. Which topology should she select?
Options- A. Star
- B. Right
- C. Token-Ring
- D. Ethernet
- E. Bus Discuss
Correct Answer: Bus
- 6. A WATS arrangement
Options- A. is always less expensive than flat-rate service
- B. is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
- C. is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
- D. is never less expensive than flat-rate service
- E. None of the above Discuss
Correct Answer: is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
- 7. The MAC (Media Access Control) address of the network card is used in both Ethernet and Token-Ring networks and is essential for communication. What does MAC provide?
Options- A. A logical address that identifies the workstation
- B. A physical address that is randomly assigned each time the computer is started
- C. A physical address that is assigned by the manufacturer
- D. The logical domain address for the workstation
- E. An alias for the computer name Discuss
Correct Answer: A physical address that is assigned by the manufacturer
- 8. A communications device that combines transmissions from several 1/ O devices into one line is a:
Options- A. concentrator
- B. modifier
- C. multiplexer
- D. full-duplex line
- E. None of the above Discuss
Correct Answer: multiplexer
- 9. The standard suit of protocols used by the Internet, intranets, extranets, and some other networks.
Options- A. TCP/IP
- B. Protocol
- C. Open Systems
- D. Internetwork processor Discuss
Correct Answer: TCP/IP
- 10. In geosynchronous orbit, satellite
Options- A. remains in a fixed position so that as earth rotates, it can fully cover the earth
- B. remains in a fixed position related to points on earth
- C. moves faster than the earth's rotation so that it can cover larger portion of earth.
- D. moves simultaneously
- E. None of the above Discuss
Correct Answer: remains in a fixed position so that as earth rotates, it can fully cover the earth
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