Drag steps to the numbered slots on the right, or tap a step then tap a slot.
Steps
Order
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mediumDrag & DropObjective-mapped
CAS-004 Practice Question: Drag and drop the steps to configure a RADIUS…
Drag and drop the steps to configure a RADIUS server for 802.1X authentication into the correct order.
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
✓
1. Install NPS, 2. Register NPS in Active Directory, 3. Add RADIUS client, 4. Configure connection request policy, 5. Configure network policy
RADIUS setup: install NPS, register in AD, add RADIUS client, configure connection policy, then network policy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
1. Install NPS, 2. Register NPS in Active Directory, 3. Add RADIUS client, 4. Configure connection request policy, 5. Configure network policy
Why this is correct
This is the correct order because NPS must be installed first, then registered in AD to allow authentication, then RADIUS clients must be added so the NPS knows which devices to accept requests from, then connection request policies define how requests are processed, and finally network policies define the conditions and constraints for granting access.
- ✗
1. Install NPS, 2. Register NPS in Active Directory, 3. Configure connection request policy, 4. Add RADIUS client, 5. Configure network policy
Why it's wrong here
This order is incorrect because the RADIUS client must be added before configuring the connection request policy, as the policy needs to know which clients to apply to. Doing it in reverse order may cause policy misapplication or failures.
- ✗
1. Register NPS in Active Directory, 2. Install NPS, 3. Add RADIUS client, 4. Configure connection request policy, 5. Configure network policy
Why it's wrong here
This order is incorrect because NPS cannot be registered in AD before it is installed. The registration step requires the NPS role to be present, and attempting to register before installation will fail.
- ✗
1. Install NPS, 2. Add RADIUS client, 3. Register NPS in Active Directory, 4. Configure connection request policy, 5. Configure network policy
Why it's wrong here
This order is incorrect because the NPS must be registered in AD before adding RADIUS clients, as the registration enables NPS to authenticate users against AD. Adding clients prior to registration can lead to authentication failures because NPS is not yet trusted in the domain.
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.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 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 CAS-005 exam.