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CompTIA A+ 220-1102 Practice Question

Which of the following options can be used to restrict what devices can be physically connected to a network based on a MAC address?

Firewall
Access Control Lists
Port security
Switch filtering

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Answer Description

Port Security also known as MAC Filtering is used to restrict which devices can physically connect to the network. This is done by whitelisting which MAC addresses (the physical address of a Networking Interface Card (NIC) are permitted on the network. It is most commonly done where a network port like an RJ-45 is publicly accessible like in an office waiting area.

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CompTIA A+ 220-1102

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