Question

short note on hub
Short note on hub​

Answer 1

Explanation:

A hub is a physical layer networking device which is used to connect multiple devices in a network.

Answer 2

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Hub:

• A hub has a number of input lines that it joins electrically. Active hub and passive hub are two types of hubs.

• Frames arriving on any of the lines are sent out on all the others. It is broadcast device. If two frames arrive at the same time, they will collide, just as on a coaxial cable.

• All the lines coming into a hub must operate at the same speed. Hubs differ from repeaters in that they do not boost the incoming signals and are designed for multiple input lines, but the differences are slight.

• Like repeaters, hubs are physical layer devices that do not examine the link layer addresses or use them in any way. It is not an intelligent device.