Which device operates at the data link layer and uses MAC addresses to forward data? MCQ with Answer and Explanation

Which device operates at the data link layer and uses MAC addresses to forward data?
A. Gateway
B. Switch
C. Router
D. Hub
Answer: Option B
Solution (By JKSSB Mock Tests)
A switch uses MAC addresses to forward frames within a local network, operating at layer 2.

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Practice More Computer Networking Questions

Question #1
Which topology design provides an exceptionally robust environment where the failure of any single connection line affects only the device connected to that specific line?
A. Bus Topology
B. Ring Topology
C. Star Topology
D. Linear Topology

Correct Answer: Option C


Explanation:
In a star topology, each node uses an isolated cable run to connect to a central switch. A break in one cable only disconnects that specific device.

This question belongs to: Computer Computer Networking
Question #2
What is a subnet?
A. A VLAN
B. A physical network segment
C. A type of router
D. A logical subdivision of an IP network

Correct Answer: Option D


Explanation:
Subnetting divides a large network into smaller logical subnetworks.

This question belongs to: Computer Computer Networking
Question #3
Which IP address class allocates the first two octets to identify the network portion and the remaining two octets for host devices, using a default mask of 255.255.0.0?
A. Class B
B. Class D
C. Class C
D. Class A

Correct Answer: Option A


Explanation:
Class B addresses use a 16-bit network prefix, spanning an initial octet range from 128 to 191.

This question belongs to: Computer Computer Networking