Type the command sleep 5 at a command prompt and press Enter. When did you receive your...

Type the command sleep 5 at a command prompt and press Enter. When did you receive your shell prompt? Explain the events that occurred by referencing Figure 9-3. Next, type exec sleep 5 at a command prompt and press Enter. What happened? Can you explain the results using Figure 9-3? Redraw Figure 9-3 to indicate what happens when a command is directly executed.