Which of the following relational database constructs is used to ensure valid values are entered for a column?

An end user's computer has been failing to open its word processing software. An IT technician successfully solves the problem. Which of the following best describes the technician's NEXT step?

A company requires several reports that analyze related information from sales, inventory, marketing, and compensation dat A.
Which of the following is the BEST place to store this data?

A user wants to ensure port 3389 is open for remote desktop on a PC. Which of the following describes where the user should verify the port is open?

A technician is installing a new wireless network and wants to secure the wireless network to prevent unauthorized access. Which of the following protocols would be the MOST secure?