Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 116
Q1641:
Which switching method is used in traditional telephone systems?
A. Packet switching
B. Message switching
C. Circuit switching
D. Internet switching
Correct Answer:
C
Chapter: 116
Q1642:
In circuit switching, a 4x8 switch means:
A. 4 outputs, 8 inputs
B. 4 processors, 8 memory slots
C. 4 inputs, 8 outputs
D. 8 switches with 4 channels each
Correct Answer:
C
Chapter: 116
Q1643:
Fill in the blank: ______ switching dedicates a full communication path before transmission starts.
A. Circuit
B. Message
C. Packet
D. Logical
Correct Answer:
A
Chapter: 116
Q1644:
Which of the following allows full-duplex voice communication in circuit-switched networks?
A. Only TDM
B. Only routers
C. Use of FDM or TDM
D. Both FDM and TDM
Correct Answer:
D
Chapter: 117
Q1645:
How many phases are involved in communication over a circuit-switched network?
A. Two
B. Three
C. Four
D. Five
Correct Answer:
B
Chapter: 117
Q1646:
Which of the following is the first phase in circuit-switched communication?
A. Data Transfer
B. Connection Teardown
C. Connection Setup
D. Session Initialization
Correct Answer:
C
Chapter: 117
Q1647:
Fill in the blank: The actual communication in a circuit-switched network starts with ______.
A. Data Transfer
B. Connection Setup
C. Connection Teardown
D. Signal Amplification
Correct Answer:
B
Chapter: 117
Q1648:
Which phase comes immediately after connection setup in a circuit-switched network?
A. Connection teardown
B. Data buffering
C. Data transfer
D. Signal routing
Correct Answer:
C
Chapter: 117
Q1649:
Fill in the blank: The final phase in circuit-switched communication is ______.
A. Connection Teardown
B. Connection Setup
C. Session Control
D. Packet Routing
Correct Answer:
A
Chapter: 117
Q1650:
Which of the following correctly represents the order of phases in circuit-switched communication?
A. Connection Teardown → Data Transfer → Connection Setup
B. Connection Setup → Data Transfer → Connection Teardown
C. Data Transfer → Connection Setup → Teardown
D. Session Init → Teardown → Transfer
Correct Answer:
B
Chapter: 117
Q1651:
What happens during the Connection Teardown phase?
A. The data is transferred
B. The connection is released
C. The circuit is activated
D. The network is reconfigured
Correct Answer:
B
Chapter: 117
Q1652:
In circuit-switching, which phase ensures the channel is reserved before sending data?
A. Connection Setup
B. Connection Teardown
C. Data Transfer
D. Initialization
Correct Answer:
A
Chapter: 117
Q1653:
Fill in the blank: Data transfer cannot begin until ______ is complete in a circuit-switched network.
A. Connection Teardown
B. Connection Setup
C. Signal Interruption
D. Error Detection
Correct Answer:
B
Chapter: 117
Q1654:
Which of these is NOT a phase in circuit-switched communication?
A. Connection Setup
B. Data Transfer
C. Connection Re-routing
D. Connection Teardown
Correct Answer:
C
Chapter: 117
Q1655:
During which phase is the actual information transmitted in a circuit-switched network?
A. Connection Setup
B. Connection Teardown
C. Data Transfer
D. Session Control
Correct Answer:
C
Chapter: 118
Q1656:
Why is a circuit-switched network considered less efficient than packet-switched networks?
A. It uses fewer links
B. It allocates resources dynamically
C. Resources are allocated throughout the connection
D. There is no data compression
Correct Answer:
C
Chapter: 118
Q1657:
Fill in the blank: Circuit-switched networks allocate resources ______.
A. only when needed
B. after connection teardown
C. throughout the entire session
D. during data loss
Correct Answer:
C
Chapter: 118
Q1658:
Which of the following is a major limitation of circuit-switched networks in data communication?
A. High noise
B. Slow speed
C. Low efficiency
D. Low security
Correct Answer:
C
Chapter: 118
Q1659:
What is the major advantage of circuit-switched networks regarding delay?
A. High delay at each switch
B. Minimal delay throughout connection
C. Intermittent delays
D. Lossy transmission
Correct Answer:
B
Chapter: 118
Q1660:
Fill in the blank: Circuit-switched networks have ______ delay because data is not held up at each switch.
A. minimal
B. significant
C. random
D. long
Correct Answer:
A