SISE Network Access Device Administration Practice Question
A user is assigned a Command Set that permits all commands, but they are still receiving 'Access Denied' when running 'reload'. What is the most likely reason?
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
✓
The user's privilege level on the device is insufficient
The switch's local privilege levels may prevent the user from executing high-impact commands like 'reload' even if the TACACS+ command set permits it.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The Command Set is not applied in the Policy Set
Why it's wrong here
If they can log in, the policy is likely hit.
- ✗
The device is not authorized for the command
Why it's wrong here
The command set is the authority.
- ✓
The user's privilege level on the device is insufficient
Why this is correct
Command authorization is checked against both ISE and the local device parser.
- ✗
The TACACS+ server is unreachable
Why it's wrong here
If it were unreachable, the user would not be logged in.
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.
About these practice questions
This SISE question is part of Courseiva's 322-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 →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Cisco exam blueprint
This SISE 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 SISE exam.