Which of the following is NOT a wireless AP mode?

The wireless access point (AP) modes include various configurations that determine how the AP interacts with clients and the network. Local mode is the default operating mode for a Cisco Wireless AP, where it serves wireless clients and handles data traffic. Monitor mode is used primarily for scanning and monitoring the wireless environment without serving clients, often utilized for security purposes or to gauge network performance. Bridge/Mesh mode is employed when integrating APs into a wireless mesh network, allowing them to extend coverage by relaying signals between nodes.

Distributed mode is not a recognized operating mode for wireless APs. Although the term may be used in various contexts, such as describing network architectures or topologies, it does not specifically refer to a mode that APs operate in. Hence, the distinction lies in the understanding that while other options serve specific purposes in wireless networking, the term "Distributed" does not denote an actual mode employed by wireless APs.