IB Computer Science SL Quiz

What is the primary function of the CPU?

• Managing network connections

• Executing instructions and processing data

• Controlling external peripherals

• Storing long-term data

What is the correct order of the fetch-decode-execute cycle?

• Execute → Decode → Fetch

• Decode → Fetch → Execute

• Fetch → Decode → Execute

• Fetch → Execute → Decode

Which component of the CPU is responsible for arithmetic and logical operations?

• Control Unit (CU)

• Arithmetic Logic Unit (ALU)

• Memory Address Register (MAR)

• Memory Data Register (MDR)

Which of the following is considered volatile memory?

• ROM

• Cache

• Hard Drive

• Flash Storage

Which type of memory is used to store data and programs currently being executed?

• Secondary Storage

• RAM

• Cache

• ROM

What is a key difference between RAM and ROM?

• RAM is volatile, while ROM is non-volatile

• RAM is slower than ROM

• RAM stores permanent data, whereas ROM stores temporary data

• RAM is used for booting up a system, while ROM is used for active processes

Which type of cache memory is the closest to the CPU and the fastest?

• L1 Cache

• L2 Cache

• Virtual Memory

• L3 Cache

What is the purpose of virtual memory?

• To provide an alternative to primary memory

• To permanently store all running programs

• To expand available memory by using part of the hard drive

• To store frequently accessed instructions for the CPU

What is the primary function of a memory address register (MAR)?

• It stores instructions currently being executed

• It manages the cache memory

• It holds the address of the memory location to be accessed

• It performs logical comparisons in the CPU

What is the role of the control unit (CU) in the CPU?

• Holding machine code instructions

• Performing mathematical calculations

• Managing the execution of instructions

• Storing frequently accessed data