Computer Architecture and Pipeline Design Quiz
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Questions and Answers

What is a disadvantage of using multiple pipelines in a simple pipeline system?

  • Improved accuracy in fetching instructions
  • Contention delays for access to registers and memory (correct)
  • Faster resolution of branch decisions
  • Reduced complexity in handling branch instructions
  • What problem arises when additional branch instructions enter the pipeline before the original branch decision is resolved in a system with multiple pipelines?

  • Faster execution of branch instructions
  • Each additional branch instruction needs its own stream (correct)
  • Reduced contention delays for access to registers and memory
  • Improved efficiency in handling branch instructions
  • What is the purpose of prefetching the target of a conditional branch in a pipeline system?

  • To reduce the number of pipeline streams needed
  • To save time by fetching the target in advance (correct)
  • To replicate the initial portions of the pipeline
  • To increase contention delays for access to memory
  • Which machines are examples of systems with two or more pipeline streams, as mentioned in the text?

    <p>IBM 370/168 and IBM 3033</p> Signup and view all the answers

    Why does a simple pipeline suffer a penalty for a branch instruction?

    <p>It must choose one of two instructions to fetch next and may make the wrong choice</p> Signup and view all the answers

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