When using an LDAP server as the authentication server, if you want to perform user authentication, which of the following operations needs to be performed on the data of the LDAP server?

When using an LDAP server as the authentication server, if you want to perform user authentication, which of the following operations needs to be performed on the data of the LDAP server?
A . Query class
B . Delete class
C . Writing class
D . Update class

Answer: A