Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2111: Fill in the blank: If the transmitted checksum matches the calculated one at the receiver, ______.
- A: the message is assumed correct
- B: the message is deleted
- C: data is encrypted
- D: message is compressed
View Answer
A
Q2112: In a simple checksum example with numbers (7, 11, 12, 0, 6), what does the sender transmit along?
- A: Parity bit
- B: Checksum
- C: Control bit
- D: Data type
View Answer
B
Q2113: Which of the following is NOT true about checksum?
- A: It can be applied to messages of any length
- B: It is mostly used at the network and transport layer
- C: It is complex to implement
- D: It helps detect data corruption
View Answer
C
Q2114: Fill in the blank: Checksum is a ______ way of detecting errors in transmission.
- A: complex
- B: simple
- C: random
- D: dynamic
View Answer
B
Q2115: The main advantage of using a checksum is to ______.
- A: improve transmission speed
- B: compress data
- C: verify integrity of data
- D: assign IP addresses
View Answer
C
Q2116: Which of the following best describes where checksum is LEAST used?
- A: Network layer
- B: Transport layer
- C: Application layer
- D: Data-link layer
View Answer
D
Q2117: Fill in the blank: In checksum, a numerical value is calculated and ______ with the message.
- A: ignored
- B: combined
- C: omitted
- D: sent along
View Answer
D
Q2118: What would be the checksum of the values (7, 11, 12, 0, 6) in 4-bit sum?
- A: 36
- B: 30
- C: 29
- D: Too large for 4-bit
View Answer
A
Q2119: Which layer benefits from checksum in protocols like TCP and IP?
- A: Physical layer
- B: Transport and network layers
- C: Session layer
- D: Data-link layer
View Answer
B
Q2120: Which operation is mainly used to generate a checksum?
- A: Logical AND
- B: Bitwise XOR
- C: Addition
- D: Division
View Answer
C