Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 134
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
Correct Answer:
A
Chapter: 135
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
Correct Answer:
A
Chapter: 135
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
Correct Answer:
A
Chapter: 135
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
Correct Answer:
A
Chapter: 135
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
Correct Answer:
B
Chapter: 135
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
Correct Answer:
B
Chapter: 135
Q1907:
What causes unpredictable changes in data transmission?
A. Interference
B. Encryption
C. Compression
D. Protocol errors
Correct Answer:
A
Chapter: 135
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
Correct Answer:
A
Chapter: 135
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
Correct Answer:
B
Chapter: 135
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
Correct Answer:
A
Chapter: 135
Q1911:
What is the primary cause of data transmission errors?
A. Interference
B. Encryption
C. Compression
D. Protocol errors
Correct Answer:
A
Chapter: 135
Q1912:
Fill in the blank: In a burst error, the number of bits affected is _______ than in a single-bit error.
A. greater
B. less
C. same
D. none
Correct Answer:
A
Chapter: 135
Q1913:
Which of the following describes a scenario where a data unit undergoes predictable changes during transmission?
A. Single-bit error
B. Burst error
C. No error
D. Checksum error
Correct Answer:
D
Chapter: 135
Q1914:
What type of error occurs when the signal shape is distorted during data transmission?
A. Single-bit error
B. Burst error
C. Transmission error
D. Interference error
Correct Answer:
D
Chapter: 135
Q1915:
What does a single-bit error affect in a data unit?
A. Only one bit
B. Multiple bits
C. None of the bits
D. All the bits
Correct Answer:
A
Chapter: 135
Q1916:
Fill in the blank: A burst error typically affects _______ or more bits in a data unit.
A. one
B. two
C. many
D. none
Correct Answer:
B
Chapter: 135
Q1917:
Which of the following is NOT a type of transmission error?
A. Single-bit error
B. Burst error
C. Checksum error
D. Network error
Correct Answer:
D
Chapter: 136
Q1918:
What is a single-bit error?
A. Only one bit of a data unit is changed from 1 to 0 or 0 to 1
B. Two or more bits of a data unit are changed
C. No bit is changed
D. All bits in a data unit are reversed
Correct Answer:
A
Chapter: 136
Q1919:
Which of the following describes a burst error?
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 in the data unit are affected
D. All bits in the data unit are inverted
Correct Answer:
A
Chapter: 136
Q1920:
Fill in the blank: A burst error affects _______ or more bits in a data unit.
A. one
B. two
C. five
D. none
Correct Answer:
B