Chapter 3 Flashcards
Passwords allow for different levels of access to the BIOS settings.
Passwords
A hard drive can be encrypted to prevent data theft.
Device Encryption
This is a security feature that allows the owner to locate, lock, and delete the device.
LoJack
This is a chip designed to secure hardware by storing encryption
keys, digital certificates, passwords, and data.
Trusted Platform Module
Secure Boot is a UEFI security standard that ensures that a computer only boots an OS
that is trusted by the motherboard manufacturer.
Secure boot
The measure of work required to move a charge.
Voltage (V)
The measure of the amount of electrons moving through a
circuit per second.
Current (I)
Refers to the opposition to the flow of current in a circuit.
Resistance (R)
The measure of the work required to move electrons through a
circuit multiplied by the # of electrons going through the circuit per second.
Power (P)
The equation for voltage when current is multiplied by resistance
V=IR
The equation for power when when voltage is multiplied by current
P=VI
Complete loss of AC power
Blackout
Reduced voltage level of AC power that lasts for a period
of time.
Brownout
Interference from generators and lightning.
Noise
Sudden increase in voltage that lasts for a short period and
exceeds 100 percent of the normal voltage on a line.
Spike
Dramatic increase in voltage above the normal flow of
electrical current.
Power Surge
Helps protect against damage from surges and
spikes.
Surge Protector
Helps protect against
potential electrical power problems and provides a consistent
quality of power when brownouts and blackouts occur.
Uninterruptible Power Supply
Helps protect against potential
electrical power problems by providing a backup battery that is on
standby during normal operation.
Standby Power Supply
enables data to be distributed across multiple drives with a significant performance
increase, however the failure of a single drive means that all data is lost.
Striping
