What are two protocols that are used by AAA to authenticate users against a central database of usernames and password? (Choose two.)

Question:
What are two protocols that are used by AAA to authenticate users against a central database of usernames and password? (Choose two.)

• SSH
• HTTPS
• TACACS+
• RADIUS
• CHAP
• NTP

Explanation: By using TACACS+ or RADIUS, AAA can authenticate users from a database of usernames and passwords stored centrally on a server such as a Cisco ACS server.

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