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- Question
A 6-MHz channel is used by a digital signaling system utilizing 4-level signals. What is the maximum possible transmission rate?
Options- A. 1.5 Mbaud/sec
- B. 6 Mband/sec
- C. 12 Mbaud/sec
- D. 24 Mbaud/sec
- E. None of the above
- Correct Answer
- 12 Mbaud/sec
- 1. How many OSI layers are covered in the X.25 standard?
Options- A. two
- B. three
- C. seven
- D. six
- E. None of the above Discuss
- 2. The systematic access of small computers in a distributed data processing system is referred to as:
Options- A. dialed service
- B. multiplexing
- C. polling
- D. conversational mode
- E. None of the above Discuss
- 3. You have purchased a MAU (Multistation Access Unit) from your computer supplier and now must decide what type of network card you should install in the workstations. Which of the following would be the most appropriate?
Options- A. Fast SCSI Wide
- B. Token-Ring
- C. ArcServe
- D. Ethernet
- E. None of the above Discuss
- 4. Which of the following statement is incorrect?
Options- A. The transport layer provides for any format, translationer code conversion necessary to put the data into an intelligible format.
- B. The presentation layer transforms information from machine format to the understandable format.
- C. The data link layer handles the transfer of data between the ends of a physical link.
- D. All of the above
- E. None of the above Discuss
- 5. Working of the WAN generally involves
Options- A. telephone lines
- B. microwaves
- C. satellites
- D. All of the above
- E. None of the above Discuss
- 6. What is the minimum number of wires required for sending data over a serial communications links?
Options- A. 2
- B. 1
- C. 4
- D. 3
- E. None of the above Discuss
- 7. A modulator converts a _____ signal to a(n) _____ signal.
Options- A. FSK; PSK
- B. PSK; FSK
- C. analog; digital
- D. digital; analog
- E. None of the above Discuss
- 8. Who originally designed TCP/IP?
Options- A. The Department of Defense
- B. Novell
- C. IBM
- D. Xerox Discuss
- 9. To set up a bulletin board system you need
Options- A. a smart modem with auto-answer capabilities
- B. a telephone line
- C. a personal computer
- D. All of the above
- E. None of the above Discuss
- 10. Synchronous protocols
Options- A. transmit characters one at a time
- B. allow faster transmission than asynchronous protocols do
- C. are generally used by personal computers
- D. are more reliable
- E. None of the above Discuss
Networking problems
Search Results
Correct Answer: three
Correct Answer: polling
Correct Answer: Token-Ring
Correct Answer: The transport layer provides for any format, translationer code conversion necessary to put the data into an intelligible format.
Correct Answer: All of the above
Correct Answer: 2
Correct Answer: digital; analog
Correct Answer: The Department of Defense
Correct Answer: All of the above
Correct Answer: allow faster transmission than asynchronous protocols do
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