_____ is a method of dealing with a situation in which two or more users or applications need to access the same record at the same time.

All of the following are included in the Security category of the Windows Action Center, EXCEPT ________

A) network firewall B) Internet security settings C) virus protection D) system backup

Answer the following statements true (T) or false (F)

1. Consider two blocks, one within another. If an identifier is declared as a variable in the inmost of these two blocks, one can access this variable from the outer block. 2. Consider two blocks, one within another. C++ prohibits an identifier to be declared as a variable in each of these blocks. 3. Calling something a black box is a figure of speech that conveys the idea that you cannot see inside. You know its behavior and interface but not its implementation. 4. When a loop is nested in side another loop, a break or continue statement terminates or restarts the outermost loop of the nested loop structure.