KS3 HL1.2 - system architecture

What are the three main steps in the fetch-decode-execute cycle?

• Fetches instructions, decodes them, executes them

• Fetches data, processes data, stores data

• Fetches instructions, processes data, stores data

• Fetches data, decodes data, stores data

What does the CPU do during the "fetch" step of the fetch-decode-execute cycle?

• Executes the instruction

• Decodes the instruction

• Fetches the instruction from memory

• Stores the instruction

Which of the following is NOT a factor that affects the performance of a CPU?

• Clock speed

• Cache size

• Number of cores

• Number of instructions

What does clock speed refer to in a CPU?

• The size of the CPU

• The rate at which instructions are processed

• The number of cores in the CPU

• The amount of memory in the CPU

Which of the following is a characteristic of a CPU that can affect its performance?

• Number of transistors

• Clock speed

• Number of registers

• Size of the motherboard

What is the purpose of the program counter during the fetch step?

• To execute the instruction

• To keep track of where the instruction is

• To decode the instruction

• To store the instruction

What is the third step in the fetch-decode-execute cycle?

• Decode

• Execute

• Fetch

• Store

Which of the following best describes the fetch-decode-execute cycle?

• A process that stores data in the CPU

• A process that fetches, decodes, and executes instructions

• A process that transfers data between memory and the CPU

• A process that manages the CPU's power consumption

What is the purpose of cache memory within the CPU?

• To store data permanently

• To prevent data bottlenecks

• To increase the size of the CPU

• To slow down data access

What is the L1 cache used for?

• To store data permanently

• To store very frequently accessed data

• To store data that is rarely accessed

• To store data temporarily