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- Question
What is the default subnet mask for a class C network?
Options- A. 127.0.0.1
- B. 255.0.0.0
- C. 255.255.0.0
- D. 255.255.255.0
- E. None of the above
- Correct Answer
- 255.255.255.0
- 1. Usually, it takes 10-bits to represent one character. How many characters can be transmitted at a speed of 1200 BPS?
Options- A. 10
- B. 12
- C. 120
- D. 1200
- E. None of the above Discuss
- 2. Which of the following is used for modulation and demodulation?
Options- A. modem
- B. protocols
- C. gateway
- D. multiplexer
- E. None of the above Discuss
- 3. A distributed network configuration in which all data/information pass through a central computer is
Options- A. bus network
- B. star network
- C. ring network
- D. Point-to-point network
- E. None of the above Discuss
- 4. Carrier is
Options- A. One or more conductors that serve 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 sections 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
- 5. Avalanche photodiode receivers can detect hits of transmitted data by receiving
Options- A. 100 photons
- B. 200 photons
- C. 300 photons
- D. 400 photons
- E. None of the above Discuss
- 6. What is the port number for NNTP?
Options- A. 119
- B. 80
- C. 79
- D. 70 Discuss
- 7. What can greatly reduce TCP/IP configuration problems?
Options- A. WINS Server
- B. WINS Proxy
- C. DHCP Server
- D. PDC
- E. None of the above Discuss
- 8. What are the most commonly used transmission speeds in BPS used in data communication?
Options- A. 300
- B. 1200
- C. 2400
- D. 9600
- E. None of the above Discuss
- 9. The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error rate for a communication line using 9-bit frames is approximately equal to
Options- A. 0.003
- B. 0.009
- C. 0.991
- D. 0.999
- E. None of the above Discuss
- 10. When you ping the loopback address, a packet is sent where?
Options- A. On the network
- B. Down through the layers of the IP architecture and then up the layers again
- C. Across the wire
- D. through the loopback dongle
- E. None of the above Discuss
Networking problems
Search Results
Correct Answer: 120
Correct Answer: modem
Correct Answer: star network
Correct Answer: a continuous frequency capable of being modulated or impressed with a second signal
Correct Answer: 200 photons
Correct Answer: 119
Correct Answer: DHCP Server
Correct Answer: 9600
Correct Answer: 0.009
Correct Answer: Down through the layers of the IP architecture and then up the layers again
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