Memory Flashcards
Memory that the system can’t write to during normal device operations
Read-only memory (ROM)
Stored information the PC and other components need to boot, access basic hardware, and locate an operating system
Firmware
Instead of having to physically replace the chip, you can rewrite the information stored on the chip using a process called ….
flashing
What is an EPROM?
erasable programmable read-onlymemory chip for ROM.
The primary firmware standards used on PCs
UEFI (Unified Extensible Firmware Interface)and its predecessorBIOS (basic input/output system)
Permanent storage location for maintaining critical information, such as the computer or mobile device boot program
Read-only memory (ROM)
What are the two types of passwords to enter BIOS/UEFI?
supervisor/admin and user
Prevents someone from successfully booting the computer, whether from its normal hard drive or an operating system on a removable device.
boot password
Restricts booting from or access to a specific hard disk, regardless of what computer it is installed in., protecting the privacy of its data.
hard disk password
A UEFI feature that verifies an operating system’s boot loader is electronically signed by the vendor before it loads.
Secure boot
This prevents malware, such as a rootkit, from hijacking your boot process.
Secure boot
An international standard designed to secure hardware by integrating encryption keys into devices.
Trusted Platform Module (TPM)
A data protection and theft recovery solution from Absolute Software Corporation, which protects your device’s data and can locate your lost or stolen device.
LoJack
Many BIOS/UEFI has hardware monitoring including the following…
Temperature, Fan Speed, Voltage, Clock Speeds, Intrusion Detection, Diagnostic Tools
What if done incorrectly can “brick” your device?
Flashing BIOS incorrectly
What command allows you to view system BIOS version in Windows?
MSINFO32.EXE
A temporary storage space used by the operating system and applications to pass information to the CPU for processing.
Random access memory (RAM)
Why is RAM considered Volatile?
It isn’t maintained when the computer is powered down.
What is the RAM connected to?
The memory controller in the northbridge chip or the CPU itself
The memory bus is a series of electronic circuitry that provides three functions:
data, address, and control.
Performs management functions such as specifying the memory’s clock signal, and telling the memory module if the operation is a read or write.
The control bus
A 32-bit module that has memory chips on one side of the package. Only used on very old computers, and frequently must be installed in matched pairs
SIMM: A single inline memory module
A 64-bit module which can have memory chips on one or both sides of the package. Depending on the system they might be installed alone, in pairs, or even in larger sets.
DIMM: A dual inline memory module
A smaller memory form factor typically used in laptops and SFF PCs
SODIMM: A small outline dual inline memory module