Discussion
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- Question
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
- Correct Answer
- digital; analog
- 1. 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
- 2. 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 Discuss
- 3. 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
- 4. 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
- 5. 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
- 6. Who originally designed TCP/IP?
Options- A. The Department of Defense
- B. Novell
- C. IBM
- D. Xerox Discuss
- 7. 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
- 8. 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
- 9. Number of bits per symbol used in Baudot code is
Options- A. 1
- B. 5
- C. 8
- D. 9
- E. None of the above Discuss
- 10. If odd parity is used for ASCII error detection, the number of 0s per eight-bit symbol is _____.
Options- A. even
- B. odd
- C. indeterminate
- D. 42 Discuss
Networking problems
Search Results
Correct Answer: 2
Correct Answer: 12 Mbaud/sec
Correct Answer: three
Correct Answer: polling
Correct Answer: Token-Ring
Correct Answer: The Department of Defense
Correct Answer: All of the above
Correct Answer: allow faster transmission than asynchronous protocols do
Correct Answer: 5
Correct Answer: odd
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