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- Question
Which of the following statement is correct?
Options- A. A spin stabilized satellite used solar cells mounted on a cylinder body that continuously rotates so that 40 a time and it also uses gyroscopic action of a spinning satellite to maintain its orientation towards the earth and the sun.
- B. A spin stabilized satellite uses solar panels whose cells are continually oriented toward the sun
- C. Satellite transponders use lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations.
- D. satellite transponders use a single frequency for reception and transmission from one point on earth to another
- E. None of the above
- Correct Answer
- A spin stabilized satellite used solar cells mounted on a cylinder body that continuously rotates so that 40 a time and it also uses gyroscopic action of a spinning satellite to maintain its orientation towards the earth and the sun.
- 1. Which of the following performs modulation and demodulation?
Options- A. fiber optic
- B. satellite
- C. coaxial cable
- D. modem
- E. None of the above Discuss
- 2. What is the port number for POP3?
Options- A. 110
- B. 90
- C. 80
- D. 49 Discuss
- 3. Which of the following is considered a broadband communications channel?
Options- A. coaxial cable
- B. fiber optic cable
- C. microwave circuits
- D. satellites systems
- E. All of the above Discuss
- 4. Communication between computers is almost always
Options- A. serial
- B. parallel
- C. series parallel
- D. direct
- E. None of the above Discuss
- 5. The term "remote job entry" relates to
Options- A. batch processing
- B. realtime processing
- C. transaction processing
- D. distributed processing
- E. None of the above Discuss
- 6. On a class C network with a subnet mask of 192, how many subnets are available?
Options- A. 254
- B. 62
- C. 30
- D. 14
- E. 2 Discuss
- 7. Parity bit 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 specific 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 errors in detected
- D. the ratio of the number of data units in error to the total number of data units
- E. None of the above Discuss
- 8. The modern enterprise is interconnected internally and externally by the Internet, intranets, and other networks. Select the best fit for answer:
Options- A. Internetworked enterprise
- B. Information super highway
- C. Business applications of telecommunications
- D. Client/Server networks
- E. None of the above Discuss
- 9. Which of the following items is not used in Local Area Networks (LANs)?
Options- A. Computer
- B. Modem
- C. Printer
- D. Cable
- E. None of the above Discuss
- 10. Which of the following is not a transmission medium?
Options- A. telephone lines
- B. coaxial cable
- C. modem
- D. microwave systems
- E. satellite systems Discuss
Networking problems
Search Results
Correct Answer: modem
Correct Answer: 110
Correct Answer: All of the above
Correct Answer: serial
Correct Answer: batch processing
Correct Answer: 2
Correct Answer: a check bit appended to an array of binary digits to make the sum of all the binary digits.
Correct Answer: Internetworked enterprise
Correct Answer: Modem
Correct Answer: modem
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