1. A mobile phone has a 3.48- 1.96-inch screen size with a resolution of 326 pixels per inch. (a) How many pixels does it have? (b) With 256 levels of brightness for each color of subpixel, what is the MiB size of the display memory?

2. If an app requires the execution of 20 million instructions to complete a task and your CPU is rated at 2.1 GHz, what is the execution time of the task? Assume that each ISA3 instruction executes an average of 4.5 Mc2 instructions.

3. (a) Draw a hierarchy diagram that corresponds to the United States Constitution. (b) Based on Figure 1.5, draw a nesting diagram that corresponds to the organization of the hypothetical publishing company.

4. Why does software pricing for mainframes seem so complex?

5. Why does IBM have so many models (or capacity settings) in recent mainframe machines?

6. Multiprocessor means several processors (and that these processors are used by the operating system and applications). What does multiprogramming mean?

7. What z/VSE application changes are needed to work in an LPAR?

FIGURE 1.5 A simplified organization chart for a hypothetical publishing company. President Corporation Vice President Vice President Vice President College Div. High School Div. Elementary Div Director Manager Marketing Manufacturing Manager Manager Manager Manager South Region Advertising Marketing NE Region Sales Sales Vice President Professional Books Editor in Chief Manager West Region Sales