CompTIA A+ Core 2 (220-1002) — Question 67

Which of the following security methods BEST describes when a user enters a username and password once for multiple applications?

Answer options

• A. SSO
• B. Permission propagation
• C. Inheritance
• D. MFA

Correct answer: A

Explanation

The correct answer is A, SSO (Single Sign-On), as it allows users to authenticate once and gain access to multiple applications without needing to log in again. The other options, such as Permission propagation, Inheritance, and MFA (Multi-Factor Authentication), do not pertain to the concept of logging in with one set of credentials across different applications.