WGU D316 IT Foundations OA EXAM
QUESTIONS WITH CORRECT
SOLUTIONS||UPDATED 2026/2027
SYLLABUS||A+ GRADED||<<NEWEST
VERSION>>
What is Synchronous DRAM (SDRAM) - ANSWER ✓ RAM thats speed is
synchronized to the motherboard system clock.
What is Double Data Rate SDRAM (DDR SDRAM) - ANSWER ✓ RAM that
makes two data transfers per clock cycle.
Describe SDDRAM - ANSWER ✓ 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 - ANSWER ✓ 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 - ANSWER ✓ 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? - ANSWER ✓ central processing unit
executes program instruction code
Define a register - ANSWER ✓ a temporary storage area available to the different
units within the CPU working at the same clock speed as the CPU
Define a Cache - ANSWER ✓ a small block of memory that works at the speed of
the CPU or close to it,
explain x86 CPU Architecture - ANSWER ✓ Manufactured by intell and AMD
structured on CISC, Complex instruction set computing
a 32 bit instruction set.
complex instruction set.
explain ARM CPU - ANSWER ✓ Ran on modern mobile devices (phones)
also used in low power electronics (toys microwaves etc)
less complex instruction set.
not as much power needed to run processor or device
QUESTIONS WITH CORRECT
SOLUTIONS||UPDATED 2026/2027
SYLLABUS||A+ GRADED||<<NEWEST
VERSION>>
What is Synchronous DRAM (SDRAM) - ANSWER ✓ RAM thats speed is
synchronized to the motherboard system clock.
What is Double Data Rate SDRAM (DDR SDRAM) - ANSWER ✓ RAM that
makes two data transfers per clock cycle.
Describe SDDRAM - ANSWER ✓ 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 - ANSWER ✓ 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 - ANSWER ✓ 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? - ANSWER ✓ central processing unit
executes program instruction code
Define a register - ANSWER ✓ a temporary storage area available to the different
units within the CPU working at the same clock speed as the CPU
Define a Cache - ANSWER ✓ a small block of memory that works at the speed of
the CPU or close to it,
explain x86 CPU Architecture - ANSWER ✓ Manufactured by intell and AMD
structured on CISC, Complex instruction set computing
a 32 bit instruction set.
complex instruction set.
explain ARM CPU - ANSWER ✓ Ran on modern mobile devices (phones)
also used in low power electronics (toys microwaves etc)
less complex instruction set.
not as much power needed to run processor or device
