1 / 5
A request arrives at the top of the diagram and flows down to the database. How would you describe this?
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Top-to-bottom flow is a common pattern in architecture diagrams representing request lifecycle from user to data store.
2 / 5
In a C4 diagram, you are describing the boundary box labeled Payment Service. Which sentence is most precise?
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C4 model container descriptions should name the software element, its responsibility, and its external relationships.
3 / 5
Two services are connected by a solid arrow labeled REST/JSON. What does this communicate?
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A labeled directed arrow in an architecture diagram shows the communication protocol and direction of the relationship.
4 / 5
A component sits outside the main system boundary box. How would you describe this in a diagram walkthrough?
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In C4 and other architecture notations, elements outside the system boundary are external systems or third-party services.
5 / 5
You are narrating a sequence diagram. An actor on the left sends a message to a box on the right. What do you say?
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Sequence diagram narration specifies who initiates the interaction, what operation is performed, and what happens next.