To create an account for CLI access to an access point for troubleshooting, the WLC must be configured to allow user access with the capability to make changes. The ReadWrite User Access Mode enables an engineer to have full read and write access to the AP's configuration via the CLI, which is necessary for performing troubleshooting tasks. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

To improve the speed of client roaming in a wireless network, especially in scenarios where applications are dropping during roams between access points, it is recommended to switch to WPA2 with AES encryption.
WPA2AES provides a more robust and efficient encryption method, which can facilitate faster and more secure client handoffs between APs. This change can help mitigate issues with application drops during roaming. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI
300-430 Official Cert Guide, focusing on client roaming optimization and security protocols for wireless networks.

The command cmxha convert backup is used on the backup Cisco CMX server to designate it as the secondary server in a high-availability deployment. This command helps to resolve the issue where both servers are considered primary. References: Cisco CMX high-availability documentation will provide more details on this command.

Cisco CMX Visitor Connect supports various social connectors for guest network login. The configurable social connectors include LinkedIn, Google+, and Facebook, but not Pinterest, Medium, or Myspace. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI
300-430 Official Cert Guide

In Cisco Prime Infrastructure, the maximum number of APs that can be used to contain an identified rogue access point in the WLC is four (4). This containment process involves using nearby APs to disrupt the rogue AP's signals, thereby preventing it from effectively communicating with client devices. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide, which includes information on rogue AP detection and containment strategies within the WLC and Cisco Prime Infrastructure.