An ISP is a company that provides Internet service for a fee

Which of the following use bitmapped graphics:

1. JPEG: 2. Flash: 3. BMP: 4. GIFF: 5. Postscript: 6. AutoCAD:

____ encryption uses a single key that both the sender and receiver know.

A. ?Private-key B. ?Public-key C. ?Asymmetric D. ?Man-in-the-Middle