Question

What is the main function of a Hub in a network?

• A. To route data between different networks
• B. To filter network traffic based on MAC addresses
• C. To provide network security
• D. To regenerate signals and broadcast data to all connected devices

Hint:

A hub is a Layer 1 device with no address awareness. What is the only thing it can do with an incoming signal?

Answer 1

The Correct Option is D

Step 1: Place the hub in the OSI stack. It works purely at the Physical Layer, dealing with raw electrical signals, not addresses.

Step 2: With no addressing intelligence, it cannot decide a destination, so its only choice is to repeat the incoming signal to every port. This also boosts the signal so it can travel further.

Step 3: Therefore the core role is to regenerate and flood data to all attached devices.

\[ \boxed{\text{Regenerate signals and broadcast to all devices}} \]