Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1901: What action does a device take after sending an ARP request?
- A: It waits for an ARP reply
- B: It deletes the request
- C: It moves to the next IP address
- D: It resets its ARP cache
View Answer
A
Q1902: What is a single-bit error?
- A: Only one bit in the data unit is changed from 1 to 0 or 0 to 1
- B: Two or more bits in the data unit are changed
- C: No bits are changed
- D: All bits are reversed
View Answer
A
Q1903: A burst error occurs when _______.
- A: Two or more bits in the data unit are changed from 1 to 0 or 0 to 1
- B: Only one bit in the data unit is changed
- C: No bits are changed
- D: All bits are reversed
View Answer
A
Q1904: Fill in the blank: A single-bit error changes only _______ bit(s) of a data unit.
- A: one
- B: two
- C: more
- D: none
View Answer
A
Q1905: Which of the following best defines a burst error?
- A: An error affecting two or more bits in a data unit
- B: An error affecting only one bit in a data unit
- C: An error in the control bits
- D: An error in the checksum
View Answer
B
Q1906: In the context of data transmission, which of the following refers to an error where two or more bits change in a data unit?
- A: Single-bit error
- B: Burst error
- C: Parity error
- D: Checksum error
View Answer
B
Q1907: What causes unpredictable changes in data transmission?
- A: Interference
- B: Encryption
- C: Compression
- D: Protocol errors
View Answer
A
Q1908: Which of the following is the most likely outcome of interference during data transmission?
- A: The signal's shape changes, leading to errors in the data
- B: The transmission rate decreases
- C: The data is encrypted
- D: The data is compressed
View Answer
A
Q1909: Fill in the blank: A burst error is characterized by the alteration of _______ or more bits in a data unit.
- A: one
- B: two
- C: five
- D: six
View Answer
B
Q1910: What happens when a single-bit error occurs in a data unit?
- A: Only one bit changes from 0 to 1 or 1 to 0
- B: Two or more bits change
- C: No bits are affected
- D: All bits are changed
View Answer
A