CompTIA Network+ (N10-007) — Question 693

A network technician has deployed a new 802.11ac network and discovers some of the legacy POS equipment only supports WPA and 802.11a. Which of the following is the MOST secure method of connecting all devices while avoiding a performance impact to modern wireless devices?

Answer options

• A. Configure the APs to use LEAP authentication to support WPA rather than WPA2 for full compatibility.
• B. Connect modern devices under the 5GHz band while dedicating the 2.4GHz band to legacy devices.
• C. Connect the legacy devices with a PSK while the modern devices should use the more secure EAP.
• D. Create two SSIDs, one to support CCMP-AES encryption and one with TKIP-RC4 encryption.

Correct answer: C

Explanation

Option C is the most secure because it allows legacy devices to connect using a Pre-Shared Key (PSK) while modern devices benefit from the enhanced security of EAP. Option A is incorrect as LEAP is less secure than WPA2. Option B, while it separates the bands, does not improve security for the legacy devices. Option D introduces complexity without necessarily enhancing security for both device types.