Which of the following can be implemented to decrease the number of times a user is required to be
authenticated for access a particular resource?

A.
TCP/IP protocol

B.
Network Directory Access Protocol

C.
Kerberos

D.
Single Sign-on (SSO)

Explanation:
Single sign-on (SSO) is defined as a mechanism in which a single action of user authentication and
authorization is used to allow a user to access all computers and systems where he got a access
permission, without entering passwords for multiple times.

Answer C is incorrect. Kerberos is defined as a secure method used for authenticating a request for
a service in a computer network.

Answer A is incorrect. TCP/IP protocol is used to define the rule computers are required to follow
for communicating with each other over the internet.