SY0-701 General Security Concepts Practice Question
After an employee successfully signs in to a file-sharing portal, the portal checks whether the employee can upload files to a specific project folder. Which AAA concept is being used?
⚠ Common exam trap
A common mix-up: candidates confuse the initial login (authentication) with the subsequent permission check (authorization), often selecting 'Authentication' because they see 'signs in' and assume the entire process is about identity verification.
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
✓
Authorization, because the system is deciding what the signed-in user is allowed to do.
After the user successfully signs in (authentication), the portal checks permissions to determine if they can upload files to a specific project folder. This is the definition of authorization: verifying what an authenticated user is allowed to do. The system is enforcing access control based on the user's identity and the folder's permissions.
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, because the user proved their identity with credentials.
Why it's wrong here
Authentication is the initial step of proving identity via credentials like a password or smart card, but the scenario specifically occurs after the employee has already signed in. At that point, the portal has established the user's identity, so the subsequent check of whether they may upload files to a particular folder is a permission decision, not another identity verification. Thus, while authentication is necessary, it is not the process being described in the post-sign-in access control.
- ✓
Authorization, because the system is deciding what the signed-in user is allowed to do.
Why this is correct
Authorization is the process of determining permissions after identity has been confirmed. In this case, the portal is checking whether the authenticated user may upload files to a particular folder. That is a classic authorization decision because it controls access to a resource based on assigned rights, roles, or group membership.
- ✗
Accounting, because the portal is recording the folder permissions for later review.
Why it's wrong here
Accounting (auditing) involves recording user activities after the fact for review—such as logging which user uploaded a file, the timestamp, and the folder accessed—to enable security monitoring and compliance. The scenario, however, describes the system actively deciding whether to allow or deny the upload based on the user's assigned rights or group membership. Permission enforcement is a real-time authorization decision, not the passive logging of events that accounting entails.
- ✗
Nonrepudiation, because the portal proves the user cannot deny uploading a file.
Why it's wrong here
Nonrepudiation ensures that a user cannot deny having performed an action, typically through cryptographic mechanisms like digital signatures or robust audit logs that bind an actor to a specific event. It does not, by itself, determine whether the user has the right to upload a file; that access-control decision is made during authorization. In this case, the portal's permission check is a precondition to the action, not a proof of the action's occurrence, so nonrepudiation is irrelevant to the described process.
Quick reference
AAA Protocol Comparison
| 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.
Go deeper
Related to this question
Learn chapter
Authentication Methods
Key term
AAA
AAA (Authentication, Authorization, and Accounting) is a security framework that controls who can access a network, what they are allowed to do, and tracks what they did.
Key term
Authorization
Authorization determines what an authenticated user is allowed to do within a system, such as accessing files, running programs, or changing settings.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SY0-701 practice question is part of Courseiva's free CompTIA 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 SY0-701 exam.