Active Directory Authentication Protocol

Which of the following protocols is used by Active Directory for authentication?

A.

SSH

B.

SFTP

C.

LDAP

D.

TLS.

C.

Active Directory (AD) is a directory service that is used by Microsoft Windows operating systems. It provides a centralized database for managing user accounts, computer accounts, and other directory objects. One of the primary functions of AD is authentication, which allows users to log in to their Windows machines and access network resources.

The protocol used by Active Directory for authentication is Lightweight Directory Access Protocol (LDAP). LDAP is a client-server protocol used for accessing and maintaining distributed directory information services. It provides a standard way for clients to connect to a directory server, search for and retrieve information, and update directory data.

When a user logs in to their Windows machine, their credentials are sent to the Active Directory domain controller over a secure channel using the Kerberos authentication protocol. The domain controller verifies the user's identity and then grants access to the user based on their permissions and group memberships.

In summary, LDAP is the protocol used by Active Directory for authentication. It is a client-server protocol that allows clients to connect to a directory server, search for and retrieve information, and update directory data. When a user logs in to their Windows machine, their credentials are sent to the Active Directory domain controller over a secure channel using the Kerberos authentication protocol.