Networking problems
- 1. A noiseless 3 KHz Channel transmits bits with binary level signals. What is the maximum data rate?
Options- A. 3 Kbps
- B. 6 Kbps
- C. 12 Kbps
- D. 24 Kbps. Discuss
Correct Answer: 6 Kbps
- 2. Which of the following device is used to connect two systems, especially if the systems use different protocols?
Options- A. hub
- B. bridge
- C. gateway
- D. repeater
- E. None of the above Discuss
Correct Answer: gateway
- 3. Internet-like networks within an enterprise.
Options- A. Intranets
- B. Switching alternating
- C. Inter organizational networks
- D. Extranets Discuss
Correct Answer: Intranets
- 4. Eight stations are competing for the use of a shared channel using the 'Adaptive tree Walk Protocol'. If the stations 7 and 8 are suddenly become ready at once, how many bit slots are needed to resolve the contention?
Options- A. 7 slots
- B. 5 slots
- C. 10 slots
- D. 14 slots Discuss
Correct Answer: 7 slots
- 5. Satellite-Switched Time-Division Multiple Access (SS/TDMA) is
Options- A. the method of determining which device has access to the transmission medium at any time.
- B. a medium access control technique for multiple access transmission media
- C. a form of TDMA in which circuit switching is used to dynamically change the channel assignments
- D. All of the above
- E. None of the above Discuss
Correct Answer: a form of TDMA in which circuit switching is used to dynamically change the channel assignments
- 6. The Internet Control Message Protocol (ICMP)
Options- A. allows gateways to send error a control messages to other gateways or hosts
- B. provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another
- C. reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem
- D. All of the above
- E. None of the above Discuss
Correct Answer: All of the above
- 7. The packets switching concept was first proposed
Options- A. in the late 1980s for the Defense Ministry of US.
- B. in the early 1960s for military communication systems, mainly to handle speech
- C. in the late 1950s for Defense Ministry of US
- D. All of the above
- E. None of the above Discuss
Correct Answer: in the early 1960s for military communication systems, mainly to handle speech
- 8. Which of the following condition is used to transmit two packets over a medium at the same time?
Options- A. Contention
- B. Collision
- C. Synchronous
- D. Asynchronous
- E. None of the above Discuss
Correct Answer: Collision
- 9. The synchronous modems are more costly than the asynchronous modems because
Options- A. they produce large volume of data
- B. they contain clock recovery circuits
- C. they transmit the data with stop and start bits.
- D. they operate with a larger bandwidth
- E. None of the above Discuss
Correct Answer: they contain clock recovery circuits
- 10. Which of the following is required to communicate between two computers?
Options- A. communications software
- B. protocol
- C. communications hardware
- D. access to transmission medium
- E. All of the above Discuss
Correct Answer: All of the above
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