What best describes WPA2 in relation to 802.11 wireless network?

What cause of hidden nodes within a BSS would be more likely lead to an increase in collisions and retries?

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?

You have received a report of poor wireless connections on the third floor of a building under your administration. Three individuals have reported the problem. Apparently, the connections are reposting a strong signal, but the users cannot access the Internet. With the problem identified, what is the next logical step in the troubleshooting process?

You are using a tool that allows you to see signal strength for all APs in the area with a visual representation. It shows you SSIDs available and the security settings for each SSID. It allows you to filter by frequency band to see only 2.4 GHz networks or only 5 GHz networks. No additional features are available. What kind of application is described?