CompTIA Security Plus Mock Test Q994

Which of the following protocols is MOST likely to be leveraged by users who need additional information about another user?

A. LDAP
B. RADIUS
C. Kerberos
D. TACACS+


Correct Answer: A
Section: Access Control and Identity Management

Explanation:
A ‘directory’ contains information about users.
The Lightweight Directory Access Protocol (LDAP) is a directory service protocol that runs on a layer above the TCP/IP stack. It provides a mechanism used to connect to, search, and
modify Internet directories.
The Lightweight Directory Access Protocol (LDAP) is an open, vendor-neutral, industry standard application protocol for accessing and maintaining distributed directory information
services over an Internet Protocol (IP) network. Directory services play an important role in developing intranet and Internet applications by allowing the sharing of information about
users, systems, networks, services, and applications throughout the network. As examples, directory services may provide any organized set of records, often with a hierarchical
structure, such as a corporate email directory. Similarly, a telephone directory is a list of subscribers with an address and a phone number.

Incorrect Answers:
B: Remote Authentication Dial In User Service (RADIUS) is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for users
who connect and use a network service. It is not used by users who need additional information about another user. Therefore, this answer is incorrect.
C: Kerberos is an authentication protocol. It is not used by users who need additional information about another user. Therefore, this answer is incorrect.
D: Terminal Access Controller Access-Control System (TACACS +) is a client/server-oriented environment, and operates in a manner similar to RADIUS. It is not used by users who
need additional information about another user. Therefore, this answer is incorrect.

References:
https://msdn.microsoft.com/en-us/library/aa367008(v=vs.85).aspx
https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol