Which of the following technologies is MOST likely being used to provide access to the third company?

A company wants to extend its help desk availability beyond business hours. The Chief Information Officer (CIO) decides to augment the help desk with a third-party service that will answer calls and provide Tier 1 problem resolution, such as password resets and remote assistance.

The security administrator implements the following firewall change:

The administrator provides the appropriate path and credentials to the third-party company.

Which of the following technologies is MOST likely being used to provide access to the third company?
A . LDAP
B . WAYF
C . OpenID
D . RADIUS
E . SAML

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Answer: D