A sprint retrospective is a time-boxed event of 3 hours for a one months sprint. It can be shorter for a shorter sprint. It’s at the end of the sprint.
The target of the sprint retrospective is to inspect the process so how the work is done (instead, the sprint review is to inspect the work). In this event, you get feedback on the process and foster empiricism.
The scrum guide state that:
The Scrum Team inspects how the last Sprint went with regards to individuals, interactions, processes, tools, and their Definition of Done. Inspected elements often vary with the domain of work. Assumptions that led them astray are identified and their origins explored. The Scrum Team discusses what went well during the Sprint, what problems it encountered, and how those problems were (or were not) solved.Scrum guide 2020 – Sprint Retrospective
The Scrum Team identifies the most helpful changes to improve its effectiveness. The most impactful improvements are addressed as soon as possible. They may even be added to the Sprint Backlog for the next Sprint.
For the exam remember that:
- Sprint Retrospective is 3 hours boxed event for a one-month sprint; it can be shorter for the shorter sprint;
- All the scrum team attends the Sprint Retrospective;
- The target is to foster empiricism by inspecting the process.