WGU D316 UPDATED TEST PAPER QUESTIONS
AND ANSWERS SURE A+
✔✔What is Synchronous DRAM (SDRAM) - ✔✔RAM thats speed is synchronized to the
motherboard system clock.
✔✔What is Double Data Rate SDRAM (DDR SDRAM) - ✔✔RAM that makes two data
transfers per clock cycle.
✔✔Describe SDDRAM - ✔✔Synchronous Dynamic RAM
used today in RAM DIMMS
Runs in sync with system clock
runs faster than DRAM
Has 8 byte wide bus
runs at mhz times the amount of bytes
includes clock speed in its name
, ✔✔Describe DDR - ✔✔Double data rate
sends double the amount each clock cycle
uses rising and falling edges of of clock signal to send data
superior to non DDRRAM
will include clock speed and bandwitdth in its name.
The peak transfer rate is 1600 MBps
✔✔Describe ECC RAM - ✔✔Error Correcting Code
Used in workstations where servers must remain online at all times.
Detects if the data was correctly processed by the memory module
makes corrections if necessary
has 9 memory chips.
✔✔what does the CPU do? - ✔✔central processing unit
executes program instruction code
✔✔Define a register - ✔✔a temporary storage area available to the different units within
the CPU working at the same clock speed as the CPU
✔✔Define a Cache - ✔✔a small block of memory that works at the speed of the CPU or
close to it,
✔✔explain x86 CPU Architecture - ✔✔Manufactured by intell and AMD
structured on CISC, Complex instruction set computing
a 32 bit instruction set.
complex instruction set.
✔✔explain ARM CPU - ✔✔Ran on modern mobile devices (phones)
also used in low power electronics (toys microwaves etc)
less complex instruction set.
AND ANSWERS SURE A+
✔✔What is Synchronous DRAM (SDRAM) - ✔✔RAM thats speed is synchronized to the
motherboard system clock.
✔✔What is Double Data Rate SDRAM (DDR SDRAM) - ✔✔RAM that makes two data
transfers per clock cycle.
✔✔Describe SDDRAM - ✔✔Synchronous Dynamic RAM
used today in RAM DIMMS
Runs in sync with system clock
runs faster than DRAM
Has 8 byte wide bus
runs at mhz times the amount of bytes
includes clock speed in its name
, ✔✔Describe DDR - ✔✔Double data rate
sends double the amount each clock cycle
uses rising and falling edges of of clock signal to send data
superior to non DDRRAM
will include clock speed and bandwitdth in its name.
The peak transfer rate is 1600 MBps
✔✔Describe ECC RAM - ✔✔Error Correcting Code
Used in workstations where servers must remain online at all times.
Detects if the data was correctly processed by the memory module
makes corrections if necessary
has 9 memory chips.
✔✔what does the CPU do? - ✔✔central processing unit
executes program instruction code
✔✔Define a register - ✔✔a temporary storage area available to the different units within
the CPU working at the same clock speed as the CPU
✔✔Define a Cache - ✔✔a small block of memory that works at the speed of the CPU or
close to it,
✔✔explain x86 CPU Architecture - ✔✔Manufactured by intell and AMD
structured on CISC, Complex instruction set computing
a 32 bit instruction set.
complex instruction set.
✔✔explain ARM CPU - ✔✔Ran on modern mobile devices (phones)
also used in low power electronics (toys microwaves etc)
less complex instruction set.
