Which IEEE standard provides the highest transmission rates in the 5.0GHz frequency band?

Refer to the exhibit.

Which role must AP1 play?

Refer to the exhibit.

Network administrators need to set up a WLAN that uses WPA2 encryption and authenticates users with a preshared key (PSK) that is the same for all users. Administrators do not see where they should specify the option for the preshared key.
What should the administrators do?

Refer to the exhibits.
Exhibit 1

Exhibit 2

A company has a Mobility Master (MM)-based solution with a guest WLAN. Users can connect to the WLAN, but they receive the error shown browser rather than see login page. Exhibit 2 shows the status for one of the guest clients.
What is one issue that could cause the errors described?

A network administrator configures an Aruba Mobility Master (MM)-based solution to provide wireless access to employees. The solution must meet these criteria:
* Authenticate users to a network RADIUS server
* Enforce different Aruba firewall rules based on the user department
How can the administrator meet these criteria in the simplest way?