On a traditional IBM mainframe, a(n) __________ interrupt is the result of an illegal or invalid instruction.

Which of these characters is not an acceptable character to use in a range name?

A) z B) 1 C) _ D) !

Tommy handles access control requests for his organization. A user approaches him and explains that he needs access to the human resources database in order to complete a headcount analysis requested by the CFO. What has the user demonstrated successfully to Tommy?

A. Clearance B. Separation of duties C. Need to know D. Isolation