Drag and drop each AAA function on the left to its correct description on the right.
Drag a concept onto its matching description — or click a concept then click the description.
Verifies the identity of a user or device; Typically uses credentials such as username/password or certificates
Determines what resources or commands a user can access; Can be based on privilege levels or attribute-value pairs
Records user activity for auditing or billing purposes
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Authentication: Verifies the identity of a user or device
Authentication verifies identity, authorization determines allowed actions, and accounting tracks usage for auditing or billing.
Quick reference
| Protocol | Port(s) | Encryption | Transport | Primary Use |
|---|---|---|---|---|
| RADIUS | 1812 / 1813 | Password only | UDP | Network access control |
| TACACS+ | 49 | Full packet | TCP | Device administration |
| Diameter | 3868 | Full session | TCP / SCTP | Carrier / mobile networks |
| 802.1X | — | EAP-based | Layer 2 | Port-based access control |
TACACS+ encrypts the entire packet; RADIUS only encrypts the password field — a key exam distinction.
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This 350-401 question is part of Courseiva's 1,175-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Drag and drop each AAA function on the left to its matching description on the right.
mediumWhy P1: Authentication verifies identity; Authorization determines permitted actions; Accounting tracks usage for auditing or billing.
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-401 exam.