For the greatest security, should a Wireless LAN Access Point be put into Passive Discover Mode or Active Discover Mode? Why? 

For maximum security, an active Discover Mode is favored over a passive Discover Mode. This is due to the fact that its roaming has a lower latency. Sending several probe queries and documenting the probe answers is how Active Discover Mode works whereby WLAN SSID is usually included in the probing response. 

Step-by-step explanation

For maximum security, an active Discover Mode is favored over a passive Discover Mode. This is due to the fact that its roaming has a lower latency. Sending several probe queries and documenting the probe answers is how Active Discover Mode works whereby WLAN SSID is usually included in the probing response. No networks will appear if SSID broadcasting is disabled and active scanning is the only form of scanning allowed by the device. Active scans are more thorough than passive scans since they examine internally and externally networks in same way that a hacker would. 

Active scans replicate an attack in this regard, allowing users to see real-time vulnerabilities affecting their network. Active testing responds by transmitting test data into the system and querying specific access points, which also understand the vulnerabilities of a whole IP network. Active monitoring can be quite useful for gathering basic profile data like IP address, system name, Syslog data or NetFlow, and more comprehensive configuration data.

Active discover mode for device storage and vulnerability information is a valuable method that can yield significant results. By its very nature, passive discover is less conscious and theoretically a much gentler operation on the network. Active discover mode can speed up collection of data by sending packets directly to endpoints. However, by submitting incompatible requests or saturating local networks with large amount of traffic, which raises the likelihood of defective endpoints.

References

Sankhe, K., Jaisinghani, D., & Chowdhury, K. (2020, October). CSIscan: Learning CSI for Efficient Access Point Discovery in Dense WiFi Networks. In 2020 IEEE 28th International Conference on Network Protocols (ICNP) (pp. 1-12). IEEE.

Park, H. (2018, October). Passive Neighbor Discovery with Scanning Mechanism for Mobile Ad Hoc Devices in WUR Networks. In International Conference on Broadband and Wireless Computing, Communication and Applications (pp. 471-480). Springer, Cham.

Mohammed, K. K. WLAN Vulnerability Scanning Methodologies.