WGU C952 Computer Architecture Core Terms
Proficiency knowledge test Exam Questions and
certified Answers 2024/2025
Arithmetic Logic Unit (ALU) - correct answer AL and LU
Arithmetic Unit (AU) - correct answer performs a variety of arithmetic operations
Registers - correct answer A high speed holding device that the processor uses for
calculations and as pointer to data in the memory. The processor provides 16 registers
divided into four groups.
Logic Unit (LU) - correct answer compares information and makes decisions, performs
logical operations
Interrupters - correct answer CPU Can skip around and do stuff while it waits
Block Diagram of a Microcomputer - correct answer Clock, and processor
Clock - correct answer An electrical signal, which alternates between "0" and "1". The
duration is 1 nanosecond
Processor - correct answer control unit and arithmetic logic unit
Bus - correct answer is a subsystem (a group of parallel wires) that transfers data
between components in a computer
Data Bus - correct answer transfers instructions and data between the memory and
CPU
, I/O Bus - correct answer transfers data between the I/O devices and CPU
Address Bus - correct answer Holds the address of data and instructions
Control Bus - correct answer Carries commands from the CPU and returns status
signals from the devices. The control bus has two lines (read and write)
Instruction Execution Cycle - correct answer The execution of a single machine
instruction can be divided into a sequence of individual operations. Before executing, a
program is loaded into memory.
Instruction Pointer (IP) - correct answer contains the address of the next instruction.
Instruction Fetch (IF) - correct answer The CPU fetches the next instruction and
increments the IP.
Instruction Decode (ID) - correct answer The control unit decodes the instruction's
function to determine what to do
Data Fetch (DF) - correct answer CU copies data into registers
Operand Fetch (OF) - correct answer CU copies operands into registers
Instructions Execution (IE) - correct answer The ALU executes the instructions
Store Output Operand (ST) - correct answer CU stores the result to the destination
(memory or register)
Cache Memory - correct answer Smaller, faster memory used by the CPU to reduce
the average time to access memory. The data from the most frequently used main
memory location is stored here.
Proficiency knowledge test Exam Questions and
certified Answers 2024/2025
Arithmetic Logic Unit (ALU) - correct answer AL and LU
Arithmetic Unit (AU) - correct answer performs a variety of arithmetic operations
Registers - correct answer A high speed holding device that the processor uses for
calculations and as pointer to data in the memory. The processor provides 16 registers
divided into four groups.
Logic Unit (LU) - correct answer compares information and makes decisions, performs
logical operations
Interrupters - correct answer CPU Can skip around and do stuff while it waits
Block Diagram of a Microcomputer - correct answer Clock, and processor
Clock - correct answer An electrical signal, which alternates between "0" and "1". The
duration is 1 nanosecond
Processor - correct answer control unit and arithmetic logic unit
Bus - correct answer is a subsystem (a group of parallel wires) that transfers data
between components in a computer
Data Bus - correct answer transfers instructions and data between the memory and
CPU
, I/O Bus - correct answer transfers data between the I/O devices and CPU
Address Bus - correct answer Holds the address of data and instructions
Control Bus - correct answer Carries commands from the CPU and returns status
signals from the devices. The control bus has two lines (read and write)
Instruction Execution Cycle - correct answer The execution of a single machine
instruction can be divided into a sequence of individual operations. Before executing, a
program is loaded into memory.
Instruction Pointer (IP) - correct answer contains the address of the next instruction.
Instruction Fetch (IF) - correct answer The CPU fetches the next instruction and
increments the IP.
Instruction Decode (ID) - correct answer The control unit decodes the instruction's
function to determine what to do
Data Fetch (DF) - correct answer CU copies data into registers
Operand Fetch (OF) - correct answer CU copies operands into registers
Instructions Execution (IE) - correct answer The ALU executes the instructions
Store Output Operand (ST) - correct answer CU stores the result to the destination
(memory or register)
Cache Memory - correct answer Smaller, faster memory used by the CPU to reduce
the average time to access memory. The data from the most frequently used main
memory location is stored here.
