You need to configure power management for your notebook computer. You need to ensure that when the computer sits idle for more than 15 minutes, the computer powers down and turns itself off. You also need to be able to bring the computer back to being fully functional and available with the same applications running as before the computer was turned off. You need to bring the computer back up as quickly as possible when it is turned back on.
Which power state should you have the computer enter after it sits idle for 15 minutes?
1. Hibernate
2. Shutdown
3. >>Standby
4. Suspend
Explanation : You should have the computer enter hibernate state after it sits idle for 15 minutes. When a computer hibernates, all currently running applications and data in RAM are written to the hard disk. The computer power is then turned off. When the computer is turned back on, it is able to come back to full functionality with the same applications running because it reads the applications and data from the hard disk and writes them back into memory.
Shutdown also turns off the computer, but does not write the running applications or data to the hard disk. Because nothing is written to the hard disk, when the computer is turned on, it must go through full operating system startup. You must then restart any applications and reopen any data files that you need. This means that is takes longer to get the computer back to the same state as before it shut down.
Both suspend and standby are low-power states. Neither suspend nor standby turns the computer off, so neither of these power options meets your requirements.
Suspend is a low-power state with applications and memory maintained in RAM, but not written to the hard disk. Suspend does not turn off the computer, but does turn off many components in the computer, such as the hard disk.
Nothing is saved to memory or the hard disk with standby, and fewer devices are turned off (if any) than with the suspend mode. Some devices, such as the processor, are put in a lower-power mode. Because there are fewer devices that must be turned back on than with other power states, the computer returns to full functionality from this state faster than from any of the others listed.
Objective: Laptops and Portable Devices
