If a system appears to be having issues with performance for read and write operations to a hard disk, which of the following is not a valid scheduling method that you could try to improve performance?

If you change the color or title of a ____ page, all the pages in the site will reflect that same color and title.

A. master B. default C. key D. super

A stack is referred to as a(n) ______ data structure, because the last node inserted is the first node removed.

Fill in the blank(s) with the appropriate word(s).