The ____ layer of the OSI model makes sure the data received at the very end of a transmission is exactly the same as the data originally transmitted.?

Match each of the following PowerPoint options to its description or location:

I. Retrospect II. Recycled paper III. Fly In IV. From Top V. On Click A. Effect Options control B. Timing option C. PowerPoint theme D. Animation effect E. Texture gallery

The variables ____________________ within functions have global scope.

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