Which of the following procedures will test the TLS configuration of your LDAP server?

The ldapsearch -ZZ option explicitly forces the use of the StartTLS extended operation, which upgrades an insecure LDAP connection to a secure TLS connection. Watching network traffic with a packet analyzer (like Wireshark) during this operation allows you to observe the TLS handshake and verify that the LDAP communication payload is encrypted, confirming the TLS configuration works.

The ldapsearch -x option specifies simple authentication, which is orthogonal to TLS; it does not force or test TLS negotiation.

The slapcat command is used to output the entire LDAP directory content to standard output; it does not involve network communication with the server and therefore cannot test TLS configuration.

While ldap_auth.log might contain some authentication-related messages, it is not a standard log file for detailed TLS negotiation processes; OpenLDAP server logs or client debug logs would be more appropriate, but direct network observation is definitive.

/var/log/auth.log primarily logs authentication attempts for various services, not detailed TLS negotiation specific to an LDAP server.