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Difficulty: EasyAuthentication, Authorization, and Accounting (AAA)

A system administrator is configuring access control for an enterprise network. Before a user is granted permissions to access sensitive network shares, the system must first verify who the user claims to be using a username and password. Which pillar of the Authentication, Authorization, and Accounting (AAA) framework is being performed during this initial identity verification step?

  1. AuthenticationAnswer
  2. B
    Authorization
  3. C
    Accounting
  4. D
    Non-repudiation

Answer

Authentication
Authentication is the primary pillar of AAA responsible for verifying identity credentials (such as passwords, tokens, or biometrics) to confirm that a user is who they claim to be before granting access.

Step-by-Step Solution

1
Analyze the scenario task
The system is verifying the user's claimed identity via username and password credentials.
Identifying who a user claims to be is the core purpose of authentication.
2
Map the task to the AAA framework components
Identity verification maps directly to Authentication.
Authorization specifies permissions and Accounting logs activities, whereas Authentication handles initial identity verification.

Key Concept

Authentication in the AAA Framework
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Topics

Authentication, Authorization, and Accounting (AAA)

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