CWNA: Certified Wireless Network Administrator v107 — Question 20

You recently purchased four laptops containing dual-band 802.11ac adapters. The laptops can connect to your 2.4 GHz network, but they cannot connect to the 5
GHz network. The laptops do not show the 5 GHz SSIDs, which are different than the 2.4 GHz SSIDs. Existing devices can connect to the 5 GHz SSIDs with no difficulty. What is the likely problem?

Answer options

• A. Interference from non-Wi-Fi sources
• B. Faulty drivers
• C. DoS attack
• D. Interference from other WLANs

Correct answer: D

Explanation

The likely issue is interference from other WLANs, which can prevent the laptops from detecting the 5 GHz network. Interference from non-Wi-Fi sources or faulty drivers would not typically cause the SSIDs to be invisible, and a DoS attack would disrupt connectivity rather than specifically hide SSIDs.