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350-701 Practice Question: Is configuring Cisco ISE for 802.1X…
A security engineer is configuring Cisco ISE for 802.1X authentication using EAP-TLS. What must be deployed on the endpoints to support this authentication method?
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
✓
A client certificate
EAP-TLS requires a client certificate on the supplicant for mutual authentication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A username and password
Why it's wrong here
Username/password is used in PEAP-MSCHAPv2, not EAP-TLS.
- ✓
A client certificate
Why this is correct
Correct. EAP-TLS uses certificate-based authentication.
- ✗
A TOTP token
Why it's wrong here
TOTP is for multi-factor authentication, not EAP-TLS.
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A shared secret
Why it's wrong here
Shared secret is used for RADIUS communication, not for EAP-TLS.
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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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-701 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 350-701 exam.