Ann, a user, is experiencing issues trying to decrypt email on a new mobile device. She is unable to access internal resources, but she can get to the Internet while connected to the WLAN. Ann can also decrypt email while using a desktop computer. A technician notices she has several authentication errors when connecting to the WLAN.
Which of the following is MOST likely causing the wireless issues?

During the firmware upgrade of a web server, a power outage occurred. The outage caused a failure within the upgrade. Which of the following plans must be implemented to revert back to the most recent version of the firmware?

An end user set up a gaming server on an extra Windows PC. The user wants the PC to restart automatically during the night using the shutdown -r -?command.
Which of the following is the BEST tool to accomplish this?

Users have reported their files have disappeared, and they are unable to access local data. The security administrator quarantined all affected systems and removed any remote connectivity; however, users are still unable to access local data PC performance has not been affected, but the applications keep failing. Which of the following has MOST likely occurred?

A network administrator has noticed unusual activity with a user's login credentials on the network. The user is attempting multiple simultaneous login across the network, some of which are attempting to access workstations and servers to which the user does not have access.
Which of the following should the network administrator do NEXT?