mediumMultiple Choice
220-1102 PEAP-MSCHAPv2 Practice Question
A user reports that their laptop frequently disconnects from the office Wi-Fi and reconnects after a few seconds. The network uses WPA2-Enterprise with PEAP-MSCHAPv2. Other users do not experience this issue. What is the most likely cause?
⚠ Common exam trap
Candidates may incorrectly attribute a single-user issue to server-side authentication problems, but in this case the RADIUS server does not use client certificates in PEAP-MSCHAPv2, so the correct cause is a local driver issue.
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The laptop's wireless driver is outdated.
The most likely cause is an outdated or incompatible wireless driver. This can cause intermittent connectivity issues on a single device. Other users are unaffected, and since the network uses WPA2-Enterprise with PEAP-MSCHAPv2, which relies on username/password authentication, the RADIUS server does not reject client certificates. Channel congestion would affect multiple users, and power saving mode typically turns off the adapter after inactivity, not causing frequent reconnects.
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The laptop's wireless driver is outdated.
Why this is correct
An outdated wireless driver can cause intermittent connectivity issues, such as frequent disconnects and reconnects, on a single device.
- ✗
The RADIUS server is rejecting the laptop's certificate intermittently.
Why it's wrong here
While RADIUS authentication can fail intermittently, PEAP-MSCHAPv2 does not use client certificates; it uses username/password. So this option is incorrect.
- ✗
The office Wi-Fi channel is congested.
Why it's wrong here
Channel congestion would affect multiple users, not just one.
- ✗
The laptop's power saving mode is turning off the Wi-Fi adapter.
Why it's wrong here
Power saving mode typically turns off the adapter after a period of inactivity, not causing frequent reconnects. Driver issues are more likely.
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.
Go deeper
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Key term
Extensible Authentication Protocol
Extensible Authentication Protocol (EAP) is a flexible authentication framework used in network access control, particularly in wireless and point-to-point connections, that supports multiple authentication methods without requiring changes to the underlying protocol.
Key term
Remote Authentication Dial-in User Service
RADIUS is a network protocol that provides centralized authentication, authorization, and accounting for users trying to connect to a network service.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1202 practice question is part of Courseiva's free CompTIA 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 220-1202 exam.