Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1941: Fill in the blank: In error detection, we are only interested in knowing whether _______ occurred.
- A: any error has occurred
- B: no error has occurred
- C: a burst error has occurred
- D: a single-bit error has occurred
View Answer
A
Q1942: What is more difficult in the process of error handling?
- A: Detection
- B: Correction
- C: Detection and correction are equally difficult
- D: None of the above
View Answer
B
Q1943: In error detection, which of the following is true?
- A: We only need to know if any error has occurred
- B: We need to know the location and number of corrupted bits
- C: We need to know the cause of the error
- D: We need to correct the error immediately
View Answer
A
Q1944: Which type of error handling involves finding the exact number of corrupted bits and their location?
- A: Error detection
- B: Error correction
- C: Error isolation
- D: Error prevention
View Answer
B
Q1945: Fill in the blank: Error correction requires knowing the _______ of corrupted bits and their _______.
- A: number, location
- B: number, type
- C: cause, location
- D: none
View Answer
B
Q1946: What is the role of redundant bits in data transmission?
- A: They help to detect and correct errors
- B: They help to speed up the transmission
- C: They prevent errors from occurring
- D: They minimize the size of the data
View Answer
A
Q1947: Which of the following does error detection NOT provide?
- A: The exact number of corrupted bits
- B: The location of corrupted bits
- C: The occurrence of any error
- D: Correction of the error
View Answer
A
Q1948: Fill in the blank: In error detection, we are looking to check if _______ has occurred.
- A: an error
- B: any number of bits changed
- C: a correction is needed
- D: no error
View Answer
B
Q1949: Which of the following is true about error correction?
- A: Error correction requires additional bits to locate and fix errors
- B: Error correction only identifies errors without fixing them
- C: Error correction occurs automatically without the need for extra bits
- D: Error correction happens faster than error detection
View Answer
A
Q1950: What is achieved through coding schemes to ensure data integrity?
- A: Encryption
- B: Compression
- C: Redundancy
- D: Transmission speed
View Answer
C