A user received a brand new mobile device about six months ago. The device is now running very slowly and is hotter than normal, and certain applications crash when they are started.
Which of the following are the BEST options for troubleshooting this phone? (Choose two.)

Which of the following security measures would BEST prevent unauthorized individuals from being granted access to a secure location?

Joe, a user, returns his computer to the technician who performed a virus removal on it the week before. Joe states that several symptoms have returned.
Which of the following should the technician have covered previously as part of the original repair?

A user's mobile social media application is sending emails on behalf of the user. However, the user has not authorized any new permissions for the social media application. The user only has this application installed on their smart phone and no other devices. Which of the following should a technician perform to resolve the issue?

A systems administrator needs to add security to the server room.
Which of the following would provide the BEST security for the room? (Choose two.)