WGU C952 (LATEST EDITION) Computer
Architecture LEGv8, Memory &
Architecture 2026/2027 NEWEST
EVALUATED EXAM PRACTICE 250
QUESTIONS |ORIGINAL QUESTIONS &
ANSWERS |DETAILED RATIONALES
|HINTED COMPLETE EXAM PREP GRADED
A+*INSTANT DOWNLOAD PDF
1. Which component of a computer is primarily responsible for
executing instructions?
A. RAM
B. CPU
C. SSD
D. Network interface
Answer: B. CPU
The CPU fetches, decodes, and executes instructions.
2. What is the primary purpose of the ALU?
A. Store programs permanently
B. Manage network traffic
C. Perform arithmetic and logical operations
D. Decode machine instructions
Answer: C. Perform arithmetic and logical operations
,The arithmetic logic unit performs operations such as addition,
subtraction, comparisons, and Boolean logic.
3. Which CPU component temporarily stores values needed during
instruction execution?
A. Register
B. Hard drive
C. ROM
D. Bus
Answer: A. Register
Registers are very small, high-speed storage locations inside the
processor.
4. What does the program counter contain?
A. The current instruction's opcode
B. The address of the next instruction to execute
C. The last arithmetic result
D. The address of the stack bottom
Answer: B. The address of the next instruction to execute
The program counter tracks the memory address associated with the
next instruction in the instruction sequence.
5. What is the function of the instruction register?
A. Holds the instruction currently being executed
B. Stores all program variables
C. Stores virtual-memory pages
D. Controls cache replacement
,Answer: A. Holds the instruction currently being executed
The instruction register temporarily holds an instruction after it has
been fetched from memory.
6. Which sequence best represents the basic instruction cycle?
A. Decode → execute → fetch
B. Execute → fetch → decode
C. Fetch → decode → execute
D. Fetch → execute → decode
Answer: C. Fetch → decode → execute
The processor first retrieves an instruction, determines what it
means, and then performs the required operation.
7. What is an instruction set architecture (ISA)?
A. The physical layout of a motherboard
B. The interface between software and processor hardware
C. The capacity of RAM
D. The design of a cooling system
Answer: B. The interface between software and processor
hardware
An ISA defines programmer-visible instructions, registers, data types,
addressing methods, and related architectural behavior.
8. Which is an example of an ISA?
A. DDR5
B. PCIe
, C. LEGv8
D. SATA
Answer: C. LEGv8
LEGv8 is an educational instruction-set architecture derived from the
ARMv8 architecture.
9. What is microarchitecture?
A. The instructions visible to programmers
B. The implementation of an ISA within a processor
C. The operating system's file structure
D. The programming language used to compile code
Answer: B. The implementation of an ISA within a processor
Microarchitecture describes how hardware implements the
operations specified by an ISA.
10. Which statement best distinguishes ISA from
microarchitecture?
A. ISA describes implementation; microarchitecture describes
instructions
B. ISA and microarchitecture are identical
C. ISA specifies programmer-visible behavior; microarchitecture
specifies implementation
D. Microarchitecture exists only in software
Answer: C. ISA specifies programmer-visible behavior;
microarchitecture specifies implementation
Different processors can implement the same ISA using different
internal designs.
Architecture LEGv8, Memory &
Architecture 2026/2027 NEWEST
EVALUATED EXAM PRACTICE 250
QUESTIONS |ORIGINAL QUESTIONS &
ANSWERS |DETAILED RATIONALES
|HINTED COMPLETE EXAM PREP GRADED
A+*INSTANT DOWNLOAD PDF
1. Which component of a computer is primarily responsible for
executing instructions?
A. RAM
B. CPU
C. SSD
D. Network interface
Answer: B. CPU
The CPU fetches, decodes, and executes instructions.
2. What is the primary purpose of the ALU?
A. Store programs permanently
B. Manage network traffic
C. Perform arithmetic and logical operations
D. Decode machine instructions
Answer: C. Perform arithmetic and logical operations
,The arithmetic logic unit performs operations such as addition,
subtraction, comparisons, and Boolean logic.
3. Which CPU component temporarily stores values needed during
instruction execution?
A. Register
B. Hard drive
C. ROM
D. Bus
Answer: A. Register
Registers are very small, high-speed storage locations inside the
processor.
4. What does the program counter contain?
A. The current instruction's opcode
B. The address of the next instruction to execute
C. The last arithmetic result
D. The address of the stack bottom
Answer: B. The address of the next instruction to execute
The program counter tracks the memory address associated with the
next instruction in the instruction sequence.
5. What is the function of the instruction register?
A. Holds the instruction currently being executed
B. Stores all program variables
C. Stores virtual-memory pages
D. Controls cache replacement
,Answer: A. Holds the instruction currently being executed
The instruction register temporarily holds an instruction after it has
been fetched from memory.
6. Which sequence best represents the basic instruction cycle?
A. Decode → execute → fetch
B. Execute → fetch → decode
C. Fetch → decode → execute
D. Fetch → execute → decode
Answer: C. Fetch → decode → execute
The processor first retrieves an instruction, determines what it
means, and then performs the required operation.
7. What is an instruction set architecture (ISA)?
A. The physical layout of a motherboard
B. The interface between software and processor hardware
C. The capacity of RAM
D. The design of a cooling system
Answer: B. The interface between software and processor
hardware
An ISA defines programmer-visible instructions, registers, data types,
addressing methods, and related architectural behavior.
8. Which is an example of an ISA?
A. DDR5
B. PCIe
, C. LEGv8
D. SATA
Answer: C. LEGv8
LEGv8 is an educational instruction-set architecture derived from the
ARMv8 architecture.
9. What is microarchitecture?
A. The instructions visible to programmers
B. The implementation of an ISA within a processor
C. The operating system's file structure
D. The programming language used to compile code
Answer: B. The implementation of an ISA within a processor
Microarchitecture describes how hardware implements the
operations specified by an ISA.
10. Which statement best distinguishes ISA from
microarchitecture?
A. ISA describes implementation; microarchitecture describes
instructions
B. ISA and microarchitecture are identical
C. ISA specifies programmer-visible behavior; microarchitecture
specifies implementation
D. Microarchitecture exists only in software
Answer: C. ISA specifies programmer-visible behavior;
microarchitecture specifies implementation
Different processors can implement the same ISA using different
internal designs.
