Why is a basic network Hub often called a 'dumb' device compared to a modern network Switch?
A. It lacks internal power supplies.
B. It broadcasts all incoming data packets out to every connected port, causing collision issues.
C. It cannot transmit data wirelessly.
D. It cannot understand digital binary configurations.
Answer: Option B
Solution (By JKSSB Mock Tests)
A hub operates at the Physical Layer (Layer 1) and simply repeats incoming signals to all ports, increasing network collisions and security vulnerabilities.
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?
Explanation:
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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