Which of the following authentication services is the MOST likely using?

Joe, a network administrator, is able to manage the backup software console by using his network
login credentials. Which of the following authentication services is the MOST likely using?

A.
SAML

B.
LDAP

C.
iSCSI

D.
Two-factor authentication

Explanation:
Joe is able to manage the backup system by logging into the network. This is an example of
Single Sign-on.
A common usage of LDAP is to provide a “single sign on” where one password for a user is
shared between many services, such as applying a company login code to web pages (so that
staff log in only once to company computers, and then are automatically logged into the company
intranet).
The Lightweight Directory Access Protocol 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.