What is the name of a system composed of related and interacting elements that is used by organizations to direct and control quality policies and quality objectives?

Which of the following should be done to maintain and harden a hard disk? (Select the two best answers.)

A. Defragment the drive. B. Consider a whole disk encryption. C. Install third-party applications. D. Sanitize the drive.

How many algorithms can solve one specific problem?

a. only one b. many c. it depends on the type of algorithm