Use the following questions to review what you have learned:
| 1: | What do one beep, two beeps, three beeps, four beeps, and five beeps at startup signify? |
| 2: | List the possible scenarios that may occur during the BootX sequence. |
| 3: | Describe what happens during the Kernel Load stage. |
| 4: | What is the major difference between a startup item and a launchd item? |
| 5: | State three tasks that loginwindow performs after a user has logged in. |
| 6: | Identify the six visual or auditory cues that are displayed during the Mac OS X boot process. |
| A1: | One beep: no RAM installed; two beeps: incompatible RAM types; three beeps: no good memory banks; four beeps: no good boot images in BootROM; five beeps: processor is not usable. |
| A2: | Kernel found System not found Network boot No startup disk found |
| A3: | Loads device drivers, initializes I/O Kit, loads and starts launchd. |
| A4: | Startup items are always started during the startup process whether they will be used or not. A launchd item ideally is only launched when needed. |
| A5: | Loads the user's computing environment; launches the Dock, Finder, and SystemUIServer; and automatically launches applications specified in the Login Items pane of Accounts preferences. |
| A6: | Black screen, start-up chime, gray screen, gray screen with Apple logo and spinning gear, blue screen, login window. |