?The web is moving quickly toward the principles of _________ design in which the layout and design of a page changes in response to the device that is rendering it.

In the statement std::cin, what does the :: mean?

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

In the ____ access control, an administrator can assign permissions to a position and assign users and other objects to that position.

A. mandatory B. discretionary C. role based D. temporal