Which of the following wireless network protocols only supports 5GHz?

A small office wants to install a server that can provide name resolution for internal clients.
Which of the following server types would BEST accomplish this?

A technician is building a Windows server to meet the specific needs of a user. The user needs to house a replica of a very large SQL database to be able to query the database locally. Which of the following drive configurations would BEST meet the requirements while providing the maximum amount of performance and storage?

A user wants to build a new home computer that will be used exclusively for the latest offline games. The user consults with a technician on the best hardware to purchase. The user has already picked out the CPU, GPU.
RAM, and motherboard, but is unsure what else is important to achieve top performance. Which of the following should the technician suggest? (Select TWO).

An application is not responding on a user's workstation. After doing some research, a technician determines the drive is out of space. Which of the following should the technician do NEXT?