Bookmarks are often used on ________ webpages, which help the user to navigate quickly between a question and the corresponding answer

On a typewriter, fonts were measured in ________; today they are measured in ________

Fill in the blank(s) with correct word

In a discretionary access control environment database users are classified into three broad categories: administrator, end user other than application owner, and __________.

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