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Switch can't reduce broadcast domain because it is not a network layer device.Is my reasoning correct?
asked in Computer Networks by Junior (929 points) | 16 views

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Yes . It will reduce collision domain but not broadcoast domain .

 

Collision domain

A collision domain is, as the name implies, a part of a network where packet collisions can occur. A collision occurs when two devices send a packet at the same time on the shared network segment. The packets collide and both devices must send the packets again, which reduces network efficiency. Collisions are often in a hub environment, because each port on a hub is in the same collision domain. By contrast, each port on a bridge, a switch or a router is in a separate collision domain.

Broadcast domain

A broadcast domain is a domain in which a broadcast is forwarded. A broadcast domain contains all devices that can reach each other at the data link layer (OSI layer 2) by using broadcast. All ports on a hub or a switch are by default in the same broadcast domain. All ports on a router are in the different broadcast domains and routers don’t forward broadcasts from one broadcast domain to another.

 

IMPORTANT :remember, each port on a hub is in the same collision domain. Each port on a bridge, a switch or router is in a separate collision domain

 

 

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