- A
Authentication: Verifies the identity of the user or device attempting to access the network.
This is correct because authentication is the process of confirming the identity of a user or device, typically through credentials like username/password or certificates.
- B
Authorization: Determines what resources the authenticated user or device is allowed to access.
Why wrong: This is incorrect because authorization is indeed a component of AAA, but the question asks for the correct matching of terms to descriptions. The description given for this option is accurate for authorization, but it is not the correct answer for the specific matching required in the question.
- C
Accounting: Logs and tracks user activities, such as login times, commands executed, and data transferred.
Why wrong: This is incorrect because accounting is a AAA component that records user activities, but the description is not the one required for the correct match in this question.
- D
Supplicant: The client device that requests network access and provides credentials to the authenticator.
Why wrong: This is incorrect because the supplicant is indeed the client in 802.1X, but the question likely requires matching a different term to the description provided.
Quick Answer
The correct match is Authentication: Verifies the identity of the user or device attempting to access the network. This is because the AAA framework separates security functions into three distinct components: authentication confirms who you are, authorization determines what you can do, and accounting logs what you did. In the 802.1X context, the supplicant (client) requests access, the authenticator (switch or AP) acts as the gatekeeper, and the authentication server (typically RADIUS) validates credentials and returns authorization attributes. On the CCNA 200-301 v2 exam, this drag-and-drop question tests your ability to distinguish these roles without mixing up authorization (which grants rights) with authentication (which proves identity). A common trap is confusing the authenticator with the authentication server—remember the authenticator is the middleman device, not the RADIUS server. For a quick memory tip, think “AAA: Auth is ID, Authz is Rights, Acct is Logs,” and for 802.1X, recall “Supplicant asks, Authenticator blocks, Server decides.”
CCNA Network Services and Security Practice Question
This 200-301 practice question tests your understanding of network services and security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Drag and drop the AAA and 802.1X terms on the left to the correct descriptions on the right.
Answer choices
Why each option matters
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 the user or device attempting to access the network.
AAA components: authentication verifies identity, authorization grants rights, accounting logs activities. 802.1X roles: supplicant is the client, authenticator is the switch/AP, and authentication server (RADIUS) validates and authorizes.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Authentication: Verifies the identity of the user or device attempting to access the network.
Why this is correct
This is correct because authentication is the process of confirming the identity of a user or device, typically through credentials like username/password or certificates.
Related concept
Authentication checks who the user is.
- ✗
Authorization: Determines what resources the authenticated user or device is allowed to access.
Why it's wrong here
This is incorrect because authorization is indeed a component of AAA, but the question asks for the correct matching of terms to descriptions. The description given for this option is accurate for authorization, but it is not the correct answer for the specific matching required in the question.
- ✗
Accounting: Logs and tracks user activities, such as login times, commands executed, and data transferred.
Why it's wrong here
This is incorrect because accounting is a AAA component that records user activities, but the description is not the one required for the correct match in this question.
- ✗
Supplicant: The client device that requests network access and provides credentials to the authenticator.
Why it's wrong here
This is incorrect because the supplicant is indeed the client in 802.1X, but the question likely requires matching a different term to the description provided.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓Authentication: Verifies the identity of the user or device attempting to access the network.Correct answer▾
Why this is correct
This is correct because authentication is the process of confirming the identity of a user or device, typically through credentials like username/password or certificates.
✗Authorization: Determines what resources the authenticated user or device is allowed to access.Wrong answer — click to see why▾
Why this is wrong here
The description is correct for authorization, but the question likely expects a different term-description pair.
Why candidates choose this
Candidates may pick this because they correctly identify authorization as a AAA component, but they may not realize the question requires a specific match.
✗Accounting: Logs and tracks user activities, such as login times, commands executed, and data transferred.Wrong answer — click to see why▾
Why this is wrong here
The description is accurate for accounting, but it is not the correct answer for the specific matching task.
Why candidates choose this
Candidates may choose this because they understand accounting's role in logging, but they may confuse it with the correct match.
✗Supplicant: The client device that requests network access and provides credentials to the authenticator.Wrong answer — click to see why▾
Why this is wrong here
The description is correct for supplicant, but it is not the correct answer for the specific matching required.
Why candidates choose this
Candidates may pick this because they know the supplicant role in 802.1X, but they may not correctly identify which term matches the given description.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 200-301 questions on access control and AAA configuration.
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Network Services and Security — study guide chapter
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FAQ
Questions learners often ask
What does this 200-301 question test?
Network Services and Security — This question tests Network Services and Security — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Authentication: Verifies the identity of the user or device attempting to access the network. — AAA components: authentication verifies identity, authorization grants rights, accounting logs activities. 802.1X roles: supplicant is the client, authenticator is the switch/AP, and authentication server (RADIUS) validates and authorizes.
What should I do if I get this 200-301 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 200-301 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on 200-301
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 the AAA terms on the left to their correct definitions on the right.
medium- ✓ A.Authentication: Verifies the identity of a user or device before granting access to the network.
- B.Authorization: Determines what actions or resources an authenticated user is permitted to access.
- C.Accounting: Logs and tracks user activities, such as login times, commands executed, and data usage.
- D.RADIUS: A protocol that provides centralized authentication, authorization, and accounting for network access.
Why A: AAA components: Authentication verifies identity, Authorization controls access, Accounting logs activities. RADIUS is an open standard that combines authentication and authorization, while TACACS+ is a Cisco proprietary protocol that separates all three functions.
Last reviewed: Jun 6, 2026
This 200-301 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 200-301 exam.
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