________ is an add-in application that searches for the optimum solution by manipulating variables using constraints you set

Establishing a method to erase or clear memory is an example of securing which of the following?

A. Data in transit B. Data at rest C. Data in use D. Data in motion

How many apps can be run concurrently on Windows Phone 7?

A. 1 B. 2 C. 3 D. More than 3