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- Question
Compared to analog signals, digital signals
Options- A. allow faster transmission
- B. are more accurate
- C. both (a) and (b)
- D. All of the above
- E. None of the above
- Correct Answer
- both (a) and (b)
- 1. A 8-Mbps token ring has a token holding timer value of 10 msec. What is the longest frame (assume header bits are negligible) that can be sent on this ring?
Options- A. 8000 B frame
- B. 80,000 B frame
- C. 8 x 105 bit frame
- D. 10,000 B frame Discuss
- 2. 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.
Options- 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
- E. Broadband and baseband refer to the different frequencies at which infrared operates then transmitting signals in certain conditions Discuss
- 3. When the computer provides the manager with a multiple choice of possible answers, the prompting technique is
Options- A. question and answer
- B. form filling
- C. open-ended question
- D. menu selection
- E. None of the above Discuss
- 4. A machine that connects to two or more electronic mail systems and transfers mail messages among them is known as
Options- A. Gateways
- B. mail gateway
- C. bridges
- D. User Agent
- E. None of the above Discuss
- 5. An example of an analog communication method is
Options- A. laser beam
- B. microwave
- C. voice grade telephone line
- D. All of the above
- E. None of the above Discuss
- 6. Sending a file from your personal computer's primary memory or disk to another computer is called
Options- A. uploading
- B. downloading
- C. logging on
- D. hang on
- E. None of the above Discuss
- 7. Modulation is the process of
Options- A. converting analog signals to digital signals
- B. converting digital signals to analog signals
- C. Multiplexing various signals into high speed line signals
- D. performing data encryption. Discuss
- 8. Which address is the loopback address?
Options- A. 0.0.0.1
- B. 127.0.0.0
- C. 127.0.0.1
- D. 255.255.255.255
- E. None of the above Discuss
- 9. Which of the following refers to the terms "residual error rate"?
Options- A. the number of bit errors per twenty four hours of continuous operation on an asynchronous line
- B. The probability that one or more errors will be undetected when an error detection scheme is used
- C. the probability that one or more errors will be detected when an error detection mechanism is used
- D. signal to noise ratio divided by the ratio of energy per bit to noise per hertz
- E. None of the above Discuss
- 10. With an IP address set starting with 150, you currently have six offices that you are treating as subnets. Plans are in place to open 10 more offices before the end of the year. What subnet mask should you use to satisfy the needed number of subnets and maximize the number of hosts available at each site?
Options- A. 192
- B. 224
- C. 240
- D. 248
- E. 252 Discuss
Networking problems
Search Results
Correct Answer: 10,000 B frame
Explanation:
At 8 Mbps, a station can transmit 80,000 bits or 10,000 bytes in 10 msec. This is an upper bound on frame length. From this amount, some overhead must be subtracted, giving a slightly lower limit for the data portion. Therefore, 10,000 B frame is the correct answer.
Correct Answer: Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable
Correct Answer: menu selection
Correct Answer: mail gateway
Correct Answer: All of the above
Correct Answer: uploading
Correct Answer: converting digital signals to analog signals
Correct Answer: 127.0.0.1
Correct Answer: The probability that one or more errors will be undetected when an error detection scheme is used
Correct Answer: 248
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