CompTIA A+ Core 1 Practice Questions: Networking/Security

7 free, exam-style CompTIA A+ Core 1 (220-1101) practice questions covering Networking/Security. Each question shows the correct answer and a clear explanation. Ready for the real thing? Take the full timed quiz below.

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Q1. A user wants to prevent unauthorized devices from connecting to their SOHO wireless router. Which of the following security measures would be MOST effective for this specific goal, assuming strong encryption is already in place?

Explanation: MAC filtering allows you to create a list of allowed (or denied) MAC addresses. While not foolproof (MAC addresses can be spoofed), it adds a layer of control over which specific devices can connect to the network. Learn more.

Q2. A technician is setting up a new SOHO router. To ensure that only specific, pre-approved client devices can connect to the wireless network, which feature should be configured?

Explanation: MAC address filtering allows an administrator to define a list of MAC addresses that are permitted (or denied) access to the wireless network. While not foolproof (MAC addresses can be spoofed), it adds a layer of access control. Learn more.

Q3. Which of the following wireless security standards is considered the MOST secure for modern Wi-Fi networks?

Explanation: WPA3-Personal offers more robust security than WPA2 by using Simultaneous Authentication of Equals (SAE), providing stronger protection against password guessing attempts. WEP and WPA are outdated and insecure. Learn more.

Q4. Which protocol provides encrypted file transfer over SSH?

Explanation: SFTP uses SSH to provide encrypted authentication and file transfer. Learn more.

Q5. Why would a technician enable a guest wireless network on a SOHO router?

Explanation: A guest network gives visitors Internet access while keeping them separated from trusted local resources. Learn more.

Q6. Which wireless security standard replaced WPA2 as the stronger modern option?

Explanation: WPA3 improves wireless authentication and encryption protections compared with WPA2. Learn more.

Q7. Which wireless setting hides the network name from normal beacon displays but does not provide strong security?

Explanation: Hiding SSID broadcast is not a strong control because the network name can still be discovered from wireless traffic. Learn more.

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