CompTIA Network+ N10-009 Practice Question

Port Security is a Network Access Control (NAC) feature that limits the number of MAC addresses allowed on a single 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 the physical security layer of the network infrastructure. MAC filtering, while related, is focused more on access permissions rather than limiting the number of connections. 802.1X provides network authentication prior to allowing access, which differs from the more direct control of connections that Port Security offers. Device identification helps in recognizing the devices but does not limit the number of allowable connections specifically.