To change a file to Read-only, display the file list in File Explorer, right click on the file name, and then click:

A graphics tablet is also known as a(n) ________

A) OCR reader B) digitizing tablet C) infrared light reader D) RFID

To locate records in which a field is left blank, what should be used as the criteria for that field?

A) Is Null B) =Null C) < >Null D) Is NOT Null