What is the primary difference between AAA authentication and authorization?

By | November 19, 2022

  • A. Authentication identifies and verifies a user who is attempting to access a system, and authorization controls the tasks the user can perform.
  • B. Authentication controls the system processes a user can access, and authorization logs the activities the user initiates.
  • C. Authentication verifies a username and password, and authorization handles the communication between the authentication agent and the user database.
  • D. Authentication identifies a user who is attempting to access a system, and authorization validates the user’s password.
Answer: Option A.
Explanation: 

AAA stands for Authentication, Authorization and Accounting.
• Authentication: Specify who you are (usually via login username & password)
• Authorization: Specify what actions you can do, what resource you can access
• Accounting: Monitor what you do, how long you do it (can be used for billing and auditing) An example of AAA is shown below:
– Authentication: “I am a normal user. My username/password is user_tom/learnforever” – Authorization: “user_tom can access LearnCCNA server via HTTP and FTP” – Accounting: “user_tom accessed LearnCCNA server for 2 hours”. This user only uses “show” commands.

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