WGU C952 Computer Architecture Exam
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Questions And Correct Detailed Answers|
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1. Which of the following is considered the "brain" of the
computer?
A) RAM
B) Hard Drive
C) CPU
D) GPU
The CPU (Central Processing Unit) executes instructions and
processes data, making it the core processing unit of a computer.
2. What does the term "instruction cycle" refer to?
A) The time to transfer data from RAM to storage
B) The process of fetching, decoding, and executing an instruction
C) The time the CPU is idle
D) The sequence of power-on and shutdown
The instruction cycle consists of fetching the instruction from
memory, decoding it, and executing it.
3. Which register temporarily stores data being transferred to and
from memory?
A) Program Counter
B) Memory Data Register (MDR)
,C) Instruction Register
D) Accumulator
The MDR holds data that is being read from or written to memory.
4. What is the function of the Program Counter (PC)?
A) To store the result of arithmetic operations
B) To point to the next instruction to be executed
C) To control data transfer between memory and CPU
D) To store immediate values
The Program Counter keeps track of the memory address of the next
instruction.
5. Which type of memory is volatile?
A) ROM
B) RAM
C) Flash
D) SSD
RAM loses its contents when the computer is powered off, making it
volatile memory.
6. Which of the following is a characteristic of RISC architectures?
A) Complex instructions
B) Multiple addressing modes
C) Simple instructions that execute in a single cycle
D) Large instruction set
RISC (Reduced Instruction Set Computer) uses simple instructions to
improve execution speed.
,7. What is the main purpose of cache memory?
A) Store permanent files
B) Reduce CPU access time to frequently used data
C) Store programs on the hard disk
D) Increase virtual memory
Cache memory stores frequently accessed data closer to the CPU to
speed up processing.
8. Which is the fastest type of computer memory?
A) Hard Disk
B) SSD
C) CPU Register
D) RAM
CPU registers are located inside the CPU and provide the fastest
access time.
9. Which of the following defines Moore’s Law?
A) The speed of CPUs doubles every year
B) The price of computers doubles every 18 months
C) The number of transistors on a chip doubles approximately every
18–24 months
D) Memory access time halves every 2 years
Moore’s Law predicts transistor count growth on integrated circuits
over time.
10. What is the difference between SRAM and DRAM?
, A) DRAM is faster than SRAM
B) SRAM uses flip-flops and is faster, DRAM uses capacitors and is
slower
C) SRAM is volatile, DRAM is non-volatile
D) SRAM is used for storage, DRAM for CPU cache
SRAM stores data in flip-flops (faster, more expensive), while DRAM
uses capacitors (slower, cheaper).
11. Which addressing mode uses the operand’s memory address
directly in the instruction?
A) Direct Addressing
B) Indirect Addressing
C) Immediate Addressing
D) Register Addressing
Direct addressing specifies the memory address where the operand is
stored.
12. What is the primary purpose of the control unit?
A) Execute arithmetic operations
B) Store instructions
C) Direct the flow of data and instructions in the CPU
D) Manage secondary storage
The control unit coordinates how instructions are fetched, decoded,
and executed.
13. What is pipelining in CPU architecture?
A) Storing instructions in memory
B) Executing multiple instruction phases simultaneously
Preparation Newest With Complete
Questions And Correct Detailed Answers|
Brand New Version
1. Which of the following is considered the "brain" of the
computer?
A) RAM
B) Hard Drive
C) CPU
D) GPU
The CPU (Central Processing Unit) executes instructions and
processes data, making it the core processing unit of a computer.
2. What does the term "instruction cycle" refer to?
A) The time to transfer data from RAM to storage
B) The process of fetching, decoding, and executing an instruction
C) The time the CPU is idle
D) The sequence of power-on and shutdown
The instruction cycle consists of fetching the instruction from
memory, decoding it, and executing it.
3. Which register temporarily stores data being transferred to and
from memory?
A) Program Counter
B) Memory Data Register (MDR)
,C) Instruction Register
D) Accumulator
The MDR holds data that is being read from or written to memory.
4. What is the function of the Program Counter (PC)?
A) To store the result of arithmetic operations
B) To point to the next instruction to be executed
C) To control data transfer between memory and CPU
D) To store immediate values
The Program Counter keeps track of the memory address of the next
instruction.
5. Which type of memory is volatile?
A) ROM
B) RAM
C) Flash
D) SSD
RAM loses its contents when the computer is powered off, making it
volatile memory.
6. Which of the following is a characteristic of RISC architectures?
A) Complex instructions
B) Multiple addressing modes
C) Simple instructions that execute in a single cycle
D) Large instruction set
RISC (Reduced Instruction Set Computer) uses simple instructions to
improve execution speed.
,7. What is the main purpose of cache memory?
A) Store permanent files
B) Reduce CPU access time to frequently used data
C) Store programs on the hard disk
D) Increase virtual memory
Cache memory stores frequently accessed data closer to the CPU to
speed up processing.
8. Which is the fastest type of computer memory?
A) Hard Disk
B) SSD
C) CPU Register
D) RAM
CPU registers are located inside the CPU and provide the fastest
access time.
9. Which of the following defines Moore’s Law?
A) The speed of CPUs doubles every year
B) The price of computers doubles every 18 months
C) The number of transistors on a chip doubles approximately every
18–24 months
D) Memory access time halves every 2 years
Moore’s Law predicts transistor count growth on integrated circuits
over time.
10. What is the difference between SRAM and DRAM?
, A) DRAM is faster than SRAM
B) SRAM uses flip-flops and is faster, DRAM uses capacitors and is
slower
C) SRAM is volatile, DRAM is non-volatile
D) SRAM is used for storage, DRAM for CPU cache
SRAM stores data in flip-flops (faster, more expensive), while DRAM
uses capacitors (slower, cheaper).
11. Which addressing mode uses the operand’s memory address
directly in the instruction?
A) Direct Addressing
B) Indirect Addressing
C) Immediate Addressing
D) Register Addressing
Direct addressing specifies the memory address where the operand is
stored.
12. What is the primary purpose of the control unit?
A) Execute arithmetic operations
B) Store instructions
C) Direct the flow of data and instructions in the CPU
D) Manage secondary storage
The control unit coordinates how instructions are fetched, decoded,
and executed.
13. What is pipelining in CPU architecture?
A) Storing instructions in memory
B) Executing multiple instruction phases simultaneously
