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.
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.
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