Lesson 1.1.1
1.1.1 Architecture of the CPU Quiz: OCR Computer Science, Unit 1
20 questions
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Lesson 1.1.1, Architecture of the CPU: 20 multiple choice questions for the OCR GCSE Computer Science (J277), Unit 1: Systems architecture, written with Revision Ninja.
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The 20 questions
-
What is the primary purpose of the CPU?
- Managing peripherals
- Displaying graphics
- Long term storage
- Fetch execute cycle
-
Which stage comes first in the fetch-execute cycle?
- Store
- Decode
- Fetch
- Execute
-
Which CPU component performs arithmetic and logic operations?
- Control Unit
- Accumulator
- Cache
- ALU
-
Which component manages and coordinates the processor actions?
- Memory Address Register
- ALU
- Accumulator
- Control Unit
-
Which component temporarily holds the data awaiting transfer to or from primary memory?
- Program Counter
- Memory Address Register
- Accumulator
- Memory Data Register
-
What does the Accumulator typically store?
- ALU operation results
- Memory addresses
- Instruction register
- Clock speed
-
What does the Memory Address Register store?
- Target memory address
- Actual data value
- Next instruction count
- Arithmetic result
-
What is the key difference between storing data and storing an address?
- Input versus output
- Integer versus float
- Speed versus capacity
- Value versus location
-
Which of the following is NOT a component of the CPU?
- Control Unit
- Arithmetic Logic Unit
- Registers
- Hard disk drive
-
Which register holds the memory address of the instruction currently being executed?
- Program Counter
- Memory Address Register
- Accumulator
- Current Instruction Register
-
Which CPU component executes addition and subtraction operations?
- ALU
- Accumulator
- Control Unit
- Cache
-
Which component decodes instructions during the cycle?
- Memory Data Register
- Control Unit
- Accumulator
- ALU
-
Why does a CPU use cache memory?
- Lower power usage
- Faster data access
- Permanent file storage
- Larger storage capacity
-
What is a defining feature of Von Neumann architecture?
- Virtual memory
- Separate memory
- Shared memory
- Dual processors
-
What is the primary role of the Control Unit?
- Perform arithmetic
- Manage power supply
- Store user files
- Coordinate CPU operations
-
What does the Memory Data Register store?
- ALU status flags
- Control signals
- Data being transferred
- Memory addresses only
-
Why must CPU registers be extremely fast?
- Stored in cache
- Powered by battery
- Larger than RAM
- Used every cycle
-
A CPU must add 5 and 3. Which register is most likely to hold the result 8 at the end of the calculation?
- Memory Address Register
- Cache
- Program Counter
- Accumulator
-
Which component is a core part of the central processing unit?
- Hard drive
- Control Unit
- Power supply
- Graphics card
-
What action occurs during the fetch stage of the CPU cycle?
- Instruction retrieved
- Result stored
- Data decoded
- Instruction executed
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