Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 123
Q1721:
Which of the following best defines a Space-Division Switch?
A. It uses time slots for switching
B. It uses physical paths for switching
C. It uses frequency channels for switching
D. It uses packet queues
Correct Answer:
B
Chapter: 123
Q1722:
Which switch is more scalable for large networks?
A. Space-Division Switch
B. Multistage Switch
C. Crossbar Switch
D. None of the above
Correct Answer:
B
Chapter: 123
Q1723:
Time-Slot Interchange works by ______.
A. Changing order of frequency slots
B. Storing and forwarding time slots
C. Reversing address bits
D. Skipping unused time slots
Correct Answer:
B
Chapter: 123
Q1724:
A Crossbar switch grows ______ as the number of inputs/outputs increases.
A. Linearly
B. Exponentially
C. Randomly
D. Constantly
Correct Answer:
B
Chapter: 123
Q1725:
In a Time-Division Switch, data is transferred through ______.
A. Frequency Divisions
B. Time Slots
C. Address Tables
D. Data Buffers
Correct Answer:
B
Chapter: 123
Q1726:
Time-Division Switching is ideal for which kind of communication?
A. Asynchronous
B. Synchronous
C. Analog
D. Encrypted
Correct Answer:
B
Chapter: 123
Q1727:
Fill in the blank: A ______ switch uses a grid layout to connect inputs to outputs.
A. Crossbar
B. Router
C. Bridge
D. Hub
Correct Answer:
A
Chapter: 123
Q1728:
Fill in the blank: ______ switching uses TDM internally and is efficient in digital transmission.
A. Space-Division
B. Packet
C. Circuit
D. Time-Division
Correct Answer:
D
Chapter: 123
Q1729:
Which of the following is NOT a type of circuit switch?
A. Space-Division Switch
B. Time-Division Switch
C. Packet Switch
D. Crossbar Switch
Correct Answer:
C
Chapter: 123
Q1730:
Which switch type is known for its simple yet expensive design?
A. Multistage Switch
B. Router
C. Crossbar Switch
D. Hybrid Switch
Correct Answer:
C
Chapter: 124
Q1731:
Which layer is responsible for node-to-node communication in a network?
A. Network Layer
B. Application Layer
C. Data-Link Layer
D. Transport Layer
Correct Answer:
C
Chapter: 124
Q1732:
The Internet is a combination of networks connected using ______.
A. Cables and modems
B. Wireless signals only
C. Satellites only
D. Routers and switches
Correct Answer:
D
Chapter: 124
Q1733:
When a packet travels from one host to another, it must pass through ______.
A. The same subnet
B. Multiple networks
C. A firewall only
D. A single device
Correct Answer:
B
Chapter: 124
Q1734:
Which of the following best describes the function of the Data-Link layer?
A. Error correction and encryption
B. End-to-end delivery
C. Node-to-node delivery and framing
D. Packet switching
Correct Answer:
C
Chapter: 124
Q1735:
The Data-Link layer sits directly above the ______.
A. Network Layer
B. Application Layer
C. Physical Layer
D. Session Layer
Correct Answer:
C
Chapter: 124
Q1736:
Fill in the blank: The ______ layer ensures that data travels correctly between nodes in the same network.
A. Transport
B. Network
C. Data-Link
D. Application
Correct Answer:
C
Chapter: 124
Q1737:
What does the Data-Link layer control in a computer network?
A. Transmission of emails
B. Node-to-node communication
C. File encryption
D. User authentication
Correct Answer:
B
Chapter: 124
Q1738:
The role of switches in a network primarily lies at which layer?
A. Transport Layer
B. Application Layer
C. Data-Link Layer
D. Session Layer
Correct Answer:
C
Chapter: 124
Q1739:
Which of the following devices can operate at the Data-Link layer?
A. Modem
B. Hub
C. Router
D. Switch
Correct Answer:
D
Chapter: 124
Q1740:
Fill in the blank: ______ are used to interconnect different networks to form the Internet.
A. Firewalls
B. Routers and switches
C. Repeaters
D. Coaxial cables
Correct Answer:
B