Networking problems
- 1. An example of digital, rather than analog, communication is
Options- A. DDD
- B. DDS
- C. WATS
- D. DDT
- E. None of the above Discuss
Correct Answer: DDS
- 2. A band is always equivalent to
Options- A. a byte
- B. a bit
- C. 100 bits
- D. 16 bits
- E. None of the above Discuss
Correct Answer: None of the above
- 3. A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent?
Options- A. 32 Kbps
- B. 64 Kbps
- C. 8 Kbps
- D. 128 Kbps. Discuss
Correct Answer: 32 Kbps
- 4. Which of the following digits are known as the sub-address digits (for use by the user) of the Network User Address (NUA)?
Options- A. 5-7
- B. 1-4
- C. 8-12
- D. 13-14
- E. None of the above Discuss
Correct Answer: 13-14
- 5. A software that allows a personal computer to pretend it as a terminal is
Options- A. auto-dialing
- B. bulletin board
- C. modem
- D. terminal emulation
- E. None of the above Discuss
Correct Answer: auto-dialing
- 6. Error detecting code is
Options- A. an error-detecting code based on a summation operation performed on the bits to be checked
- B. a check bit appended to an array of binary digits to make the sum of all the binary digits.
- C. a code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and thus the presence of the error is detected.
- D. the ratio of the data units in error to the total number of data units
- E. None of the above Discuss
Correct Answer: a code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and thus the presence of the error is detected.
- 7. What is the loopback address?
Options- A. 127.0.0.1
- B. 255.0.0.0
- C. 255.255.0.0
- D. 255.255.255.255.0
- E. None of the above Discuss
Correct Answer: 127.0.0.1
- 8. What is the port number for HTTP?
Options- A. 99
- B. 86
- C. 80
- D. 23 Discuss
Correct Answer: 80
- 9. Most networks are connected to other local area or wide area networks. Select the best fit for answer:
Options- A. Internet works
- B. The Internet
- C. Internet revolution
- D. Internet technologies Discuss
Correct Answer: Internet works
- 10. You are working with a network that is 172.16.0.0 and would like to support 600 hosts per subnet. What subnet mask should you use?
Options- A. 255.255.192.0
- B. 255.255.224.0
- C. 255.255.240.0
- D. 255.255.248.0
- E. 255.255.252.0 Discuss
Correct Answer: 255.255.252.0
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