350-701 Practice Question: Secure Network Access, Visibility and Enforcement
An administrator needs to ensure that only authorized hosts can connect to a switch port. The port is connected to a single PC. Which 802.1X host mode should be configured?
⚠ Common exam trap
Cisco often tests the distinction between Single-Host and Multi-Host modes, where the trap is that candidates confuse 'single PC' with allowing multiple hosts after one authentication (Multi-Host), forgetting that Multi-Host does not enforce per-host authentication.
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
✓
Single-Host
The Single-Host mode (option A) is correct because it allows only one authenticated host per port, which matches the requirement of a single PC connected to the switch port. In this mode, the port is authorized only after a single supplicant successfully completes 802.1X authentication, and no other devices can gain network access through that port, ensuring strict access control.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Single-Host
Why this is correct
Allows only one authenticated device.
- ✗
Multi-Domain
Why it's wrong here
Designed for data and voice devices.
- ✗
Multi-Auth
Why it's wrong here
Allows multiple authentications, not needed for single PC.
- ✗
Multi-Host
Why it's wrong here
Allows multiple devices after one authentication.
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.