Quick Answer
The answer is WPA2 encryption, MAC address filtering, and disabling SSID broadcasting. These three methods are common for securing a wireless network because they each add a distinct layer of defense: WPA2 encrypts data traffic to prevent eavesdropping, MAC address filtering restricts device access by creating an allowlist of approved hardware addresses, and hiding the SSID makes the network name invisible to casual scans, reducing unauthorized connection attempts. On the CompTIA ITF+ FC0-U61 exam, this question tests your understanding of basic wireless security controls versus more advanced enterprise solutions like RADIUS or WPA3. A common trap is assuming MAC filtering is foolproof—remember that MAC addresses can be spoofed with tools like `macchanger`, so it is a deterrent, not a guarantee. For a memory tip, think of the three as “Encrypt, Filter, Hide” to recall the core methods for securing a wireless network.
This FC0-U61 practice question tests your understanding of infrastructure. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE of the following are common methods for securing a wireless network?
Implementing MAC address filtering
Restricts access to allowed devices.
Disabling SSID broadcast
Hides the network from casual scans.
Enabling WEP encryption
Why wrong: WEP is easily cracked.
Using WPA2 encryption
WPA2 provides strong encryption.
Changing the default IP address range
Why wrong: Does not secure wireless communication.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Implementing MAC address filtering
MAC address filtering is a common method for securing a wireless network because it allows the administrator to create an allowlist of specific MAC addresses that are permitted to connect to the access point. This prevents unauthorized devices from associating with the network, even if they know the SSID and password. However, it is not foolproof, as MAC addresses can be spoofed using tools like `macchanger`.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Implementing MAC address filtering
Why this is correct
Restricts access to allowed devices.
Related concept
Read the scenario before looking for a memorised answer.
Disabling SSID broadcast
Why this is correct
Hides the network from casual scans.
Related concept
Read the scenario before looking for a memorised answer.
Enabling WEP encryption
Why it's wrong here
WEP is easily cracked.
Using WPA2 encryption
Why this is correct
WPA2 provides strong encryption.
Related concept
Read the scenario before looking for a memorised answer.
Changing the default IP address range
Why it's wrong here
Does not secure wireless communication.
Common exam traps
The trap here is that candidates often think WEP is still acceptable for security because it was once a standard, but the exam expects you to know it is deprecated and easily broken, while changing the IP range is a common misconception that offers no real security benefit.
Detailed technical explanation
WPA2 (Wi-Fi Protected Access 2) uses AES (Advanced Encryption Standard) with CCMP (Counter Mode Cipher Block Chaining Message Authentication Code Protocol) to provide strong encryption and integrity. Disabling SSID broadcast prevents the network name from appearing in beacon frames, but an attacker can still discover the SSID by passively sniffing probe requests and responses. MAC filtering operates at Layer 2 of the OSI model and is enforced by the access point, but it is easily bypassed by spoofing an allowed MAC address.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
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FAQ
Infrastructure — This question tests Infrastructure — Read the scenario before looking for a memorised answer..
The correct answer is: Implementing MAC address filtering — MAC address filtering is a common method for securing a wireless network because it allows the administrator to create an allowlist of specific MAC addresses that are permitted to connect to the access point. This prevents unauthorized devices from associating with the network, even if they know the SSID and password. However, it is not foolproof, as MAC addresses can be spoofed using tools like `macchanger`.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This FC0-U61 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-U61 exam.
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