The ____ panel houses all the layers in a document and offers you many options for manipulating those layers.

Match the hex signature with its file extension

I. 00 00 01 00 A. BMP II. FF D8 FF E1 xx xx 45 78 69 66 00 B. ICO III. 42 4D C. PNG IV. 89 50 4E 47 0D 0A 1A 0A D. JPEG

Computer scientists break the movement of information from raw electrical voltage changes to humanly readable information as a series of abstraction layers. Which of the following is one of these abstraction layers?

a. Voltage fluctutations b. Changes in magnetic energy on the surface of a hard disk c. Character sets d. Binary streams e. All of the above