Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 3
Q21:
Fill in the blank: _______ ensures that data is delivered correctly in a communication system.
A. Accuracy
B. Timeliness
C. Jitter
D. Delivery
Correct Answer:
A
Chapter: 3
Q22:
Which characteristic ensures data reaches the correct destination?
A. Timeliness
B. Delivery
C. Accuracy
D. Jitter
Correct Answer:
B
Chapter: 3
Q23:
What is timeliness in data communication?
A. Delivering data ahead of time
B. Delivering data within an acceptable delay
C. Ensuring no data is lost
D. None of the above
Correct Answer:
B
Chapter: 3
Q24:
Fill in the blank: An effective data communication system focuses on _______ as a key quality metric.
A. Accuracy and jitter
B. Timeliness and delivery
C. Delivery and security
D. Accuracy and confidentiality
Correct Answer:
B
Chapter: 4
Q25:
What is the first step in the data communication process shown in the diagram?
A. Input data g(t)
B. Output information m
C. Transmitted signal s(t)
D. Received signal r(t)
Correct Answer:
B
Chapter: 4
Q26:
What does the transmitter do in the communication system?
A. Generates output data g'(t)
B. Converts text into analog signal
C. Receives data
D. Converts analog signal into digital
Correct Answer:
A
Chapter: 4
Q27:
Which component in the diagram is responsible for receiving the transmitted signal?
A. Source
B. Transmitter
C. Receiver
D. Destination
Correct Answer:
C
Chapter: 4
Q28:
Fill in the blank: The _______ system is responsible for transferring signals from the transmitter to the receiver.
A. Transmission
B. Encoding
C. Decoding
D. Source
Correct Answer:
A
Chapter: 4
Q29:
Which type of signal does the transmission system handle?
A. Analog only
B. Digital only
C. Both analog and digital
D. Neither analog nor digital
Correct Answer:
C
Chapter: 4
Q30:
What is the output of the receiver in this communication model?
A. Text
B. Output information m'
C. Analog signal
D. Output data g'(t)
Correct Answer:
D
Chapter: 4
Q31:
Fill in the blank: The final destination of the communication process is the _______.
A. Source
B. Receiver
C. Destination
D. Transmission system
Correct Answer:
C
Chapter: 4
Q32:
What is the purpose of the transmission media in this communication model?
A. Generate input data
B. Transfer the transmitted signal to the receiver
C. Decode data
D. Generate output information
Correct Answer:
B
Chapter: 5
Q33:
What is the main function of a protocol in data communication?
A. To define rules for communication
B. To transmit data directly
C. To encode the message
D. To store data temporarily
Correct Answer:
A
Chapter: 5
Q34:
Fill in the blank: A _______ is responsible for transmitting the message.
A. Protocol
B. Sender
C. Receiver
D. Medium
Correct Answer:
B
Chapter: 5
Q35:
Which component in the diagram represents the medium for transmission?
A. Sender
B. Protocol
C. Transmission medium
D. Receiver
Correct Answer:
C
Chapter: 5
Q36:
What does the transmission medium carry in the communication process?
A. Rules
B. The message
C. Protocol
D. Sender and receiver details
Correct Answer:
B
Chapter: 5
Q37:
Fill in the blank: A _______ ensures that data is transmitted correctly between sender and receiver.
A. Transmission medium
B. Sender
C. Protocol
D. Receiver
Correct Answer:
C
Chapter: 5
Q38:
What happens if the protocol rules are not followed in communication?
A. Communication proceeds successfully
B. Data may be lost or corrupted
C. Sender ignores the message
D. Receiver corrects the errors
Correct Answer:
B
Chapter: 5
Q39:
Fill in the blank: The _______ ensures the data sent by the sender is understood by the receiver.
A. Transmission medium
B. Protocol
C. Message
D. Rule set
Correct Answer:
B
Chapter: 5
Q40:
Which of the following is NOT part of the protocol?
A. Rule 1
B. Rule 2
C. Message
D. Rule n
Correct Answer:
C