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- Question
Phase shift keying (psk) method is used to modulate digital signals at 9600 bps using 16 levels. Find the line signaling speed (i.e., modulation rate)
Options- A. 2400 bands
- B. 1200 bands
- C. 4800 bands
- D. 9600 bands.
- Correct Answer
- 2400 bands
- 1. Bus is
Options- A. one or more conductors that some as a common connection for a related group of devices
- B. a continuous frequency capable of being modulated or impressed with a second signal
- C. the condition when two or more stations attempt to use the same channel at the same time
- D. a collection of interconnected functional units that provides a data communications service among stations attached to the network
- E. None of the above Discuss
- 2. In cyclic redundancy checking, the divisor is _____ the CRC.
Options- A. the same size as
- B. one bit less than
- C. one bit more than
- D. two bits more Discuss
- 3. In cyclic redundancy checking what is the CRC?
Options- A. the divisor
- B. the quotient
- C. the dividend
- D. the remainder Discuss
- 4. What is the main purpose of a data link content monitor?
Options- A. to detect problems in protocols
- B. to determine the type of transmission used in a data link
- C. to determine the type of switching used in a data link.
- D. to determine the flow of data Discuss
- 5. What does the acronym ISDN stand for?
Options- A. Indian Standard Digital Network
- B. Integrated Services Digital Network
- C. Intelligent Services Digital Network
- D. Integrated Services Data Network
- E. None of the above Discuss
- 6. Which of the following services dynamically resolves NetBIOS-to-IP resolution?
Options- A. DNS
- B. DHCP
- C. WINS
- D. LMHOSTS
- E. None of the above Discuss
- 7. Which of the following frequency ranges is used for AM radio transmission?
Options- A. Very Low Frequency : 3 kHz to 30 kHz
- B. Medium Frequency : 300 kHz to 3 MHz
- C. High Frequency : 3 MHz to 30 MHz
- D. Very High Frequency : 30 MHz to 300 MHz
- E. None of the above Discuss
- 8. Videotex is a combination of
Options- A. television
- B. communication
- C. computer technology
- D. All of the above
- E. None of the above Discuss
- 9. The basic Ethernet design does not provide
Options- A. access control
- B. addressing
- C. automatic retransmission of a message
- D. multiple virtual networks
- E. None of the above Discuss
- 10. The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as:
Options- A. modulation
- B. demodulation
- C. synchronizing
- D. synchronizing
- E. None of the above Discuss
Networking problems
Search Results
Correct Answer: one or more conductors that some as a common connection for a related group of devices
Correct Answer: one bit more than
Correct Answer: the remainder
Correct Answer: to detect problems in protocols
Correct Answer: Integrated Services Digital Network
Correct Answer: WINS
Correct Answer: Medium Frequency : 300 kHz to 3 MHz
Correct Answer: All of the above
Correct Answer: automatic retransmission of a message
Correct Answer: demodulation
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