Which networking device operates at the Data Link Layer (Layer 2) and uses MAC addresses to filter and forward data packets only to the specific destination port? MCQ with Answer and Explanation

Which networking device operates at the Data Link Layer (Layer 2) and uses MAC addresses to filter and forward data packets only to the specific destination port?
A. Repeater
B. Hub
C. Switch
D. Router
Answer: Option C
Solution (By JKSSB Mock Tests)
A network switch is an intelligent Layer 2 device that learns MAC addresses and routes traffic exclusively to the intended device, unlike a hub which broadcasts to all ports.

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Practice More Computer Networking Questions

Question #1
What is the main function of a router's routing protocol?
A. To filter traffic
B. To exchange routing information with other routers
C. To assign IP addresses
D. To resolve MAC addresses

Correct Answer: Option B


Explanation:
Routing protocols (e.g., OSPF, BGP) allow routers to share information about network paths.

This question belongs to: Computer Computer Networking
Question #2
Which type of device converts digital binary signals from a computer interface into analog patterns to transmit them over older public telephone lines?
A. Bridge
B. Modem
C. Switch
D. Router

Correct Answer: Option B


Explanation:
A modem modulates digital data into analog waves for transmission over telephone copper lines, and demodulates them back upon reception.

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Question #3
Which of the following IPv4 address blocks is strictly reserved by the IETF for private local area networks and is non-routable over the public internet?
A. 12.0.0.0 /8
B. 8.8.8.0 /24
C. 224.0.0.0 /4
D. 192.168.0.0 /16

Correct Answer: Option D


Explanation:
The 192.168.0.0 to 192.168.255.255 range is a standard private IP address block designated by RFC 1918 for internal LAN use.

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