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

A technician is setting up a Windows 10 laptop as a kiosk at a retail store. Which of the following account types would the technician MOST likely use to configure the machine?

A customer wants to experiment with software development in a sandbox environment. The customer calls the help desk for advice on preparing the workstation to run a couple instances of Linux development machines with the current OS running on the host. Which of the following components should the help desk verify FIRST before the customer begins configuring the environment? (Select TWO).

A small business owner with a limited budget wants to host a company website and ERP applications in thecloud. Which of the following would be the BEST cloud model to accomplish this task?

A customer has two 8GB sticks of 2400-speed DDR4 installed in slots 1 and 2 of a computer and wants to add more RAM. The customer purchases two additional 4GB sticks of 3200-speed DDR4 and installs then in slots 3 and 4. While installing the RAM into the board, the user notices the board has "quad channel" etched near the RAM slots.
Which of the following can be said about the user's channel configuration after upgrading the RAM?