CompTIA Network+ N10-009 (V9) Practice Question

Port Security is a Network Access Control (NAC) feature that limits the number of MAC addresses allowed on a single switch port, thereby preventing unauthorized devices from connecting to the network. This feature is pivotal in maintaining control over which devices can access network resources, enhancing security at the network access layer. MAC filtering is a related concept but is primarily focused on creating allow/deny lists for MAC addresses rather than limiting the number of connections on a port. 802.1X is a more robust NAC mechanism that provides a full authentication framework before granting network access, which is different from the direct Layer 2 control offered by Port Security.