You are responsible for the laptops used by travelling sales people in your company. These all
laptops use Windows XP. You want the
machines to go to a lower power state when they have been inactive for more than 10 minutes and
are running on battery. The sales people
complain that when their laptops go inactive they want them to return to active state very quickly.
Which low power state should you use?
A.
Low Power
B.
Sleep
C.
Standby
D.
Hibernate
Explanation:
Standby stores all the data, open programs, and settings in RAM, but then moves to a very low
power state. While the laptop is still using
power it is doing so at a much slower rate. The laptop can return to a fully active state very quickly.
The standby mode is a power saving feature for computers. In this mode, a computer does not shut
down completely. The computer goes to
low power state and, as a result, it consumes less power. When the computer resumes from the
standby mode, full power is restored to itsdevices. During the standby mode, if the power supply is disconnected or interrupted, data might be
lost. The standby mode is available
automatically on ACPI-enabled or APM-enabled computers. Users do not need to enable this mode
manually. This mode is not available in nonACPI and non-APM based computers.
Answer option D is incorrect. It is a low power state but saves all data and open programs to the
hard disk and the laptop shuts down. This
takes significantly more time to return to an active state.
What is hibernate mode? Hide
Hibernate mode is a power saving feature for computers. In hibernate mode, the current state of a
computer is saved to
the hard disk, and the computer shuts down. A user will have to power on the computer to restore
the previous settings.
When a computer resumes from hibernate mode, it reads the saved settings from the disk and
restores the system state
as it was before it entered hibernate mode. By default, hibernate mode is disabled. If a computer is
not ACPI-enabled or
APM-enabled, users will have to enter hibernate mode manually. Users cannot set the computer to
automatically hibernate
after a certain time. With ACPI-enabled and APM-enabled computers, users are able to set hibernate
mode automatically.
Answer option A is incorrect. Low power is not an actual power mode.
Answer option B is incorrect. Sleep only exists in Windows Vista.
Reference:
http://www.timeatlas.com/mos/Term_to_Learn/General/Understanding_Differences_Between_Hib
ernate_and_Stand_By/