• What is a Network Switch?

    The majority of network switches operate at the Layer 2 of OSI model. This means that their purpose is to forward ethernet frames from one port of the switch to another port.

     

    They make use of Layer 2 MAC addresses in order to forward frames to the correct destination port but they don’t know anything about Layer 3 IP addresses of the packets passing through them.

     

    On the other hand, a Layer 3 switch is a combo device which operates at both Layer 2 and Layer 3 of the OSI model.

    Learn more: IT support technician jobs

    That is, the Layer 3 switch forwards ethernet frames between ports but can also make routing decisions based on a routing table and Layer 3 IP addresses.

    The technician maintains the enterprise computing environment by resolving the issues clients face when using computers and the network. An IT technician often troubleshoots on-site computer software or hardware issues.


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