SISE Network Access Device Administration Practice Question
Which TWO of the following are true regarding TACACS+ command sets? (Choose two)
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
✓
They support explicit 'permit' and 'deny' rules
Command sets support both permit/deny and regex matching.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
They support explicit 'permit' and 'deny' rules
Why this is correct
This is the core functionality.
- ✗
They only support exact command matching
Why it's wrong here
They support regex.
- ✗
They are used to define the privilege level of the session
Why it's wrong here
That is the role of the Shell Profile.
- ✗
They are defined in the Identity store
Why it's wrong here
They are defined in Policy Elements.
- ✓
They can use regular expressions for command matching
Why this is correct
Regex adds flexibility to command matching.
Visual reference
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
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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.