A-level Pipelining video

Which of the following best describes the concept of pipelining in processor architecture?

• Executing all instructions sequentially without overlap.
• Fetching, decoding, and executing instructions in overlapping stages.
• Using multiple processors to execute instructions simultaneously.
• Dividing the processor into separate cores for each instruction.

What happens to the processor stages in a non-pipelined approach?

• They occur simultaneously, improving efficiency.
• They occur one after the other, leading to delays.
• They are executed in random order.
• They are divided into multiple cores for faster processing.

In the context of pipelining, what is the fetch-decode-execute cycle?

• A technique to reduce the number of instructions executed.
• A method to increase the clock speed of the processor.
• A sequential process where each instruction is handled one at a time.
• A process that occurs simultaneously for all instructions.

How does pipelining improve processor efficiency?

• By executing all instructions at once.
• By allowing the next instruction to be fetched while executing the previous one.
• By reducing the number of instructions needed.
• By increasing the clock speed of the processor.

Which of the following statements is true about processor pipelining?

• It requires all instructions to be of the same length.
• It is divided into instruction and arithmetic pipelines.
• It eliminates the need for memory access.
• It is only used for arithmetic operations.

What does flushing the pipeline refer to in the context of branching instructions?

• Continuing to execute instructions without interruption.
• Clearing the pipeline to make room for new instructions.
• Removing all instructions from the pipeline.
• Fetching new instructions while ignoring previous ones.

What is a potential limitation of pipelining regarding branching instructions?

• It guarantees that all instructions will be executed in order.
• It eliminates the need for any instruction fetching.
• It can lead to inefficient processing if many branches are present.
• It allows for faster execution of all instructions.

Why might programs with many branching instructions not benefit much from pipelining?

• They execute all instructions in parallel.
• They require constant fetching of new instructions, disrupting the pipeline.
• They have fewer instructions to process.
• They are designed to run on non-pipelined processors.