COMPUTER NETWORK

1. What is the primary purpose of error detection and correction?

a) To ensure data integrity during transmission b) To compress data for faster transmission c) To encrypt data for secure transmission d) To route data to the correct destination

2. Which of the following is a method for error detection?

a) Parity bit b) Checksum c) CRC (Cyclic Redundancy Check) d) All of the above

3. What is the main advantage of Hamming code?

a) It can detect and correct single-bit errors b) It is simple to implement c) It requires minimal redundancy d) It is used for data compression

4. What is the purpose of a parity bit in error detection?

a) To detect single-bit errors b) To correct single-bit errors c) To compress data d) To encrypt data

5. Which of the following is a disadvantage of parity bit error detection?

a) It cannot detect even-numbered bit errors b) It requires a large amount of redundancy c) It is complex to implement d) It cannot detect single-bit errors

6. What is the main purpose of CRC (Cyclic Redundancy Check)?

a) To detect errors in transmitted data b) To correct errors in transmitted data c) To compress data d) To encrypt data

7. Which of the following is a characteristic of checksum error detection?

a) It is simple to implement b) It can detect multiple-bit errors c) It requires minimal redundancy d) All of the above

8. What is the primary function of a switch in a network?

a) To forward data packets between devices b) To detect errors in transmitted data c) To compress data d) To encrypt data

9. Which of the following is a disadvantage of Hamming code?

a) It cannot detect multiple-bit errors b) It requires significant redundancy c) It is complex to implement d) All of the above

10. What is the main advantage of CRC over parity bit?

a) It can detect more types of errors b) It requires less redundancy c) It is simpler to implement d) It can correct errors

11. What is the primary purpose of a checksum in error detection?

a) To detect errors in transmitted data b) To correct errors in transmitted data c) To compress data d) To encrypt data

12. Which of the following is a characteristic of a switch?

a) It operates at the Data Link Layer b) It uses MAC addresses to forward data c) It can create multiple collision domains d) All of the above

13. What is the main disadvantage of checksum error detection?

a) It cannot detect all types of errors b) It requires significant redundancy c) It is complex to implement d) It cannot detect single-bit errors

14. Which of the following is a characteristic of CRC?

a) It is based on polynomial division b) It can detect burst errors c) It requires minimal redundancy d) All of the above

15. What is the primary purpose of a switch in a network?

a) To forward data packets between devices b) To detect errors in transmitted data c) To compress data d) To encrypt data

Error Detection and Correction MCQs

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