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. Hub
B. Switch
C. Router
D. Repeater
Answer: Option B
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
Which type of network environment is formed when individual components like a smartwatch, Bluetooth headset, and smartphone sync together on a user?
A. LAN
B. MAN
C. WAN
D. PAN

Correct Answer: Option D


Explanation:
PAN (Personal Area Network) connects personal electronic devices immediately surrounding a single user.

This question belongs to: Computer Computer Networking
Question #2
What happens on a shared data network using a Bus Topology layout if a data frame reaches either extreme physical endpoint without encountering a terminator component?
A. The signal transforms into an analog wave profile.
B. The data frame loops back through the local host interface automatically.
C. The signal bounces back along the cable, creating interference that corrupts ongoing network traffic.
D. The data frame is safely archived on the primary server.

Correct Answer: Option C


Explanation:
Without a terminator to absorb signals at the endpoints of a bus network, signal bounce creates interference that corrupts data traffic.

This question belongs to: Computer Computer Networking
Question #3
Which network is used for connecting personal devices like a smartphone and smartwatch?
A. MAN
B. WAN
C. LAN
D. PAN

Correct Answer: Option D


Explanation:
PAN (Personal Area Network) is designed for short-range communication among personal devices, typically within 10 meters.

This question belongs to: Computer Computer Networking