Chapter 4 Flashcards
What is buffer overflow attack
When malicious software attempts to run its code from an area of memory assigned to another program for its data.
What is CAS Latency
A way to measure access timing (used more than RAS)
What does CAS stand for
Column access strobe
What is DDR
A lower and less powerful version
What is DDR2
Faster and uses less power than DDR
What is DDR3
Faster and uses less power than DDR2
What is DDR3L
Uses less power than a regular DDR3
What is DDR4
Faster and uses less power than DDR3
What does graphics processing unit mean
A processor that manipulates graphic data to form the images seen on a monitor screen
What does GPU stand for
graphics processing unit
What does hyper threading mean
(INTEL)When you have two logical processors for each physical processor or core
What does double sided mean
The memory chips are installed on both sides of the DIMM module
what does dual channels mean
The memory controller can communicate with two DIMMS at the same time
What does dual ranked mean
Where the chips are grouped on both sides of the DIMM so that the memory controller addresses one group and then address the other
What does multicore processing mean
When multiple processors are installed in the same processor housing
What does multiplier mean
The multiplier is the factor that is used to multiply the FSB speed
What does ECC mean
Ecc compares bites written to the module to what is later read from the module and can detect and correct an error in a single bit of the byte
What does multiprocessor platform mean
When a server motherboard has two processor sockets
What does processor frequency mean
The speed at which the processor operates (measured in GHz)
What does RIMM mean
an older type of memory module
What does SIMM mean
Very old type of memory module that is unlikely to ever be seen in any working computer
What does SIMM stand for
Single inline memory module
What does SO-DIMM mean
Small outline DIMM that are smaller than a regular DIMM
What does SO-DIMM stand for
small outline single inline memory module
What does static RAM mean
The memory that is used inside a memory cache
What does SRAM stand for
static random access memory
What does synchronous DRAM mean
A DIMM that runs synchronized with the system clock
What does memory bank mean
The memory a processor addresses at one time
What is a thermal compound
A compound used to eliminate air pockets, helping to draw heat off of the processor. It transmits heat better than air and makes an airtight connection between the fan and the processor.
What is a thread
When windows hands off a task to the CPU it is called a thread and might involve several instructions
What is a x86 processor
Older processors that use a 32 bit system
What is a x86-64 bit processor
Hybrid processors that can handle a 32 or 64 bit OS
What does parity mean
older SIMMS error checking technology
What does parity error mean
If the number of bits is not an odd number for odd parity, or an even number for even parity then a parity error occurs
What does quad channels mean
The memory controller can ass 4 DIMMS at the same time
What does RAS Latency mean
A way of measuring access timing
What does single channel mean
The memory controller can only access one DIMM at a time
What does single sided mean
Means that the memory chips are installed on one side of the DIMM module
What is triple channels
The memory controller can access three DIMMS at the same time
