1. What keeps a computer from thrashing? Why does virtual memory work as well as it does?

2. Define the principle of locality.

3. What do we call a place in a program where a small chunk of code is executed many, many times?

4. Where are you more likely to see the principle of locality operating?

               in code
               
               in data

5. Think of a time when the principle of locality could be seen in a region of data memory.

6. In the following chunk of pseudo-C code, circle the likely hot spot.

     main() {
         int xyz, def, w, x, i;
     
         xyz = ....
         def = ....
         x = ....
     
         while (xyz < 5) {
              /* do something here... */
         }
     }