Which of the following features are related to power management?
Each correct answer represents a complete solution. Choose two.
A.
Hot plugging
B.
Hibernate mode
C.
Standby mode
D.
Safe mode
Explanation:
The Hibernate mode and Standby mode are features related to power management.
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.
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 its devices. 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 non-ACPI and non-APM based
computers.
Answer option A is incorrect. Hot plugging is a feature in which a device can be installed or removed
while the computer is running.
Answer option D is incorrect. Safe Mode is a Windows feature used to start a computer with basic
drivers, such as mouse, keyboard, etc. It bypasses blocking issues, such as system corruption, or
installation of incompatible drivers or system services, enabling the Administrator to resolve such
issues.