Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 124
Q1741:
Which layer handles addressing and routing between networks?
A. Physical Layer
B. Transport Layer
C. Data-Link Layer
D. Network Layer
Correct Answer:
D
Chapter: 124
Q1742:
Which is NOT a function of the Data-Link layer?
A. Framing
B. Error detection
C. Node-to-node delivery
D. End-to-end delivery
Correct Answer:
D
Chapter: 124
Q1743:
What happens when a packet moves from one host to another on the Internet?
A. It stays in the same layer
B. It bypasses all switches
C. It passes through multiple networks
D. It uses only TCP
Correct Answer:
C
Chapter: 124
Q1744:
Which of the following layers is closest to the physical transmission of data?
A. Application Layer
B. Session Layer
C. Transport Layer
D. Data-Link Layer
Correct Answer:
D
Chapter: 124
Q1745:
Which device decides the best path for a packet between networks?
A. Switch
B. Modem
C. Router
D. Bridge
Correct Answer:
C
Chapter: 124
Q1746:
Fill in the blank: A ______ reads MAC addresses to forward frames.
A. Router
B. Switch
C. Repeater
D. Firewall
Correct Answer:
B
Chapter: 124
Q1747:
The Data-Link layer is responsible for which of the following tasks?
A. Session tracking
B. End-to-end communication
C. Logical addressing
D. Framing and error detection
Correct Answer:
D
Chapter: 124
Q1748:
Which layer ensures that data from one device can be understood by another directly connected device?
A. Network Layer
B. Data-Link Layer
C. Transport Layer
D. Presentation Layer
Correct Answer:
B
Chapter: 124
Q1749:
What address type is used at the Data-Link layer?
A. MAC address
B. IP address
C. Port number
D. Email address
Correct Answer:
A
Chapter: 124
Q1750:
Which of these layers encapsulates packets into frames?
A. Application Layer
B. Transport Layer
C. Data-Link Layer
D. Network Layer
Correct Answer:
C
Chapter: 124
Q1751:
Which type of communication is handled by the Data-Link layer?
A. Process-to-process
B. Host-to-host
C. Node-to-node
D. Application-to-application
Correct Answer:
C
Chapter: 125
Q1752:
What type of communication does the data-link layer manage?
A. Host-to-host
B. Node-to-node
C. Process-to-process
D. Application-to-application
Correct Answer:
B
Chapter: 125
Q1753:
In data-link layer communication, the term "node" refers to ______.
A. Only routers
B. Only end devices
C. Only switches
D. Hosts and routers
Correct Answer:
D
Chapter: 125
Q1754:
What is the role of the links in data-link layer communication?
A. To store data
B. To provide IP addresses
C. To connect nodes
D. To encrypt packets
Correct Answer:
C
Chapter: 125
Q1755:
The links that connect nodes in a network can be ______.
A. Physical only
B. Wireless only
C. Physical or wireless
D. Encrypted only
Correct Answer:
C
Chapter: 125
Q1756:
Fill in the blank: In the data-link layer, communication is established between two directly connected ______.
A. Links
B. Nodes
C. Switches
D. Packets
Correct Answer:
B
Chapter: 125
Q1757:
Fill in the blank: A data unit traveling across the Internet passes through multiple ______.
A. Gateways only
B. Processes only
C. Layers only
D. LANs and WANs
Correct Answer:
D
Chapter: 125
Q1758:
Which of the following best defines a “node” in networking?
A. Any point where communication begins or ends
B. Only user computers
C. Only mobile devices
D. Only network hubs
Correct Answer:
A
Chapter: 125
Q1759:
When a data packet travels from one end host to another, it passes through which of the following?
A. A single local network
B. A single switch
C. Multiple networks including LANs and WANs
D. Only one router
Correct Answer:
C
Chapter: 125
Q1760:
Communication between routers is handled at which layer?
A. Application Layer
B. Session Layer
C. Data-Link Layer
D. Presentation Layer
Correct Answer:
C