Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 125
Q1761:
Which layer is responsible for communication across a single physical link?
A. Network Layer
B. Data-Link Layer
C. Transport Layer
D. Application Layer
Correct Answer:
B
Chapter: 125
Q1762:
Which statement is TRUE regarding the data-link layer?
A. It handles routing decisions
B. It provides node-to-node communication
C. It manages DNS lookup
D. It handles application logic
Correct Answer:
B
Chapter: 125
Q1763:
Fill in the blank: In data-link layer terminology, ______ are the devices that generate and receive data.
A. Links
B. Nodes
C. Cables
D. Packets
Correct Answer:
B
Chapter: 125
Q1764:
Which of the following is NOT considered a node in the context of data-link layer communication?
A. End host
B. Router
C. Link
D. Switch
Correct Answer:
C
Chapter: 125
Q1765:
Data-Link Layer communication focuses on transmission between ______.
A. Applications
B. Entire networks
C. Nodes
D. Processes
Correct Answer:
C
Chapter: 125
Q1766:
Fill in the blank: A message sent over the Internet must pass through several ______ and links to reach its destination.
A. Nodes
B. Packets
C. Protocols
D. Errors
Correct Answer:
A
Chapter: 125
Q1767:
What ensures direct delivery of frames between two adjacent devices?
A. Application Layer
B. Network Layer
C. Data-Link Layer
D. Transport Layer
Correct Answer:
C
Chapter: 125
Q1768:
Which is the correct pair as per the data-link layer terminology?
A. Node – Communication medium
B. Link – End system
C. Node – Router or host
D. Link – DNS Server
Correct Answer:
C
Chapter: 125
Q1769:
Which of the following best defines a link in networking?
A. A communication protocol
B. A transmission medium between nodes
C. A packet header
D. An IP address
Correct Answer:
B
Chapter: 126
Q1770:
The Data-Link Layer is located between which two layers?
A. Application and Network
B. Transport and Application
C. Network and Physical
D. Session and Network
Correct Answer:
C
Chapter: 126
Q1771:
Which layer provides services to the Network Layer?
A. Physical Layer
B. Application Layer
C. Data-Link Layer
D. Transport Layer
Correct Answer:
C
Chapter: 126
Q1772:
Which layer provides services to the Data-Link Layer?
A. Network Layer
B. Physical Layer
C. Session Layer
D. Transport Layer
Correct Answer:
B
Chapter: 126
Q1773:
What function breaks data into manageable units for transmission?
A. Framing
B. Error Control
C. Flow Control
D. Congestion Control
Correct Answer:
A
Chapter: 126
Q1774:
What is the primary role of flow control in the Data-Link Layer?
A. Detecting errors
B. Preventing packet loss
C. Managing data rate between sender and receiver
D. Handling IP addressing
Correct Answer:
C
Chapter: 126
Q1775:
What function of the Data-Link Layer ensures accurate data delivery by checking for corruption?
A. Framing
B. Flow Control
C. Error Control
D. Congestion Control
Correct Answer:
C
Chapter: 126
Q1776:
Fill in the blank: ______ is used to ensure the sender does not overwhelm the receiver.
A. Error detection
B. Flow Control
C. Packet switching
D. Segmentation
Correct Answer:
B
Chapter: 126
Q1777:
Which of the following is NOT a service provided by the Data-Link Layer?
A. Framing
B. Flow Control
C. DNS resolution
D. Error Control
Correct Answer:
C
Chapter: 126
Q1778:
Which layer performs congestion control along with flow and error control?
A. Data-Link Layer
B. Application Layer
C. Physical Layer
D. Network Layer
Correct Answer:
A
Chapter: 126
Q1779:
What is the purpose of congestion control in the Data-Link Layer?
A. To convert analog to digital
B. To avoid excessive network traffic
C. To compress data
D. To encrypt messages
Correct Answer:
B
Chapter: 126
Q1780:
Fill in the blank: The Data-Link Layer provides services to the ______ layer.
A. Transport
B. Network
C. Session
D. Application
Correct Answer:
B