Question:
What is the main function of a Hub in a network?
What is the main function of a Hub in a network?
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A hub is a Layer 1 device with no address awareness. What is the only thing it can do with an incoming signal?
Updated On: Jul 2, 2026
- To route data between different networks
- To filter network traffic based on MAC addresses
- To provide network security
- To regenerate signals and broadcast data to all connected devices
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The Correct Option is D
Solution and Explanation
Step 1: A hub is a simple Physical Layer (Layer 1) device. It has no knowledge of MAC or IP addresses.
Step 2: When a hub receives a signal on one port, it regenerates that signal and sends it out of every other port, so all connected devices receive the data.
Step 3: Routing between networks is a router's job, MAC-based filtering is a switch's job, and security is handled by firewalls. The hub simply regenerates and broadcasts, so the answer is option (D).
Step 2: When a hub receives a signal on one port, it regenerates that signal and sends it out of every other port, so all connected devices receive the data.
Step 3: Routing between networks is a router's job, MAC-based filtering is a switch's job, and security is handled by firewalls. The hub simply regenerates and broadcasts, so the answer is option (D).
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