hardMultiple SelectObjective-mapped
FC0-U71 Practice Question: Which TWO of the following are effective methods…
Which TWO of the following are effective methods to help secure a wireless network from unauthorized access?
⚠ Common exam trap
Many exam-takers think MAC address filtering is a strong security measure, but it is trivially bypassed by spoofing, and WEP is still mistakenly considered acceptable despite being deprecated for over a decade.
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
✓
Enabling WPA2 encryption
WPA2 (Wi-Fi Protected Access 2) uses AES-based encryption with a pre-shared key (PSK) or 802.1X authentication, providing strong confidentiality and integrity for wireless traffic. It is the minimum recommended standard for securing modern Wi-Fi networks against eavesdropping and unauthorized access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enabling WPA2 encryption
Why this is correct
WPA2 provides strong encryption to protect data.
- ✗
Enabling WEP encryption
Why it's wrong here
WEP is an outdated and insecure encryption protocol.
- ✗
Disabling the firewall
Why it's wrong here
Disabling the firewall reduces security, it does not help secure the network.
- ✓
Enabling MAC address filtering
Why this is correct
MAC filtering restricts access to approved devices.
- ✗
Broadcasting the SSID
Why it's wrong here
Broadcasting the SSID makes the network visible, not a security measure.
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 FC0-U71 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 FC0-U71 exam.