SISE BYOD Practice Question
An organization wants to implement EAP-TLS for BYOD. What is the correct sequence of the certificate lifecycle during the onboarding process?
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 > Certificate Signing Request > CA Signing > Installation
After the user authenticates, the client submits a CSR, ISE (via SCEP) signs it, and the certificate is pushed back to the client.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Certificate Request > Authentication > Signing > Installation
Why it's wrong here
Authentication must occur before the certificate request is processed.
- ✓
Authentication > Certificate Signing Request > CA Signing > Installation
Why this is correct
The standard flow requires user authentication, followed by the generation of a CSR, signing by the CA, and installation on the device.
- ✗
CA Signing > Authentication > Request > Installation
Why it's wrong here
The CA cannot sign a request that has not been generated by the device yet.
- ✗
Installation > Signing > Authentication > Request
Why it's wrong here
The device must be authenticated and the request sent before installation can occur.
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.