What is a pipeline stall? a. when instructions are not allowed to move through the pipeline for one or more clock cycles due to a data or structural hazard. b. when instructions enter the pipeline too fast. c. when instructions exit the pipeline too fast. d. when the same instruction enters and exits the pipeline in a single clock cycle. e. when an instruction later in the pipeline causes an earlier instruction to produce the wrong answer.

A. When instructions are not allowed to move through the pipeline for one or more clock cycles due to a data or structural hazard.

Explanation:Pipeline stall is a term used to computer programming and software development,it also helps to protect the information in the pipeline from being overwritten by the following Pipeline stalling has helped programmers/ software developers to ensure effective and safe execution of projects. For microprocessors,the lack of pipeline stalls often increases the pipeline length.

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