Request, response and local save
Fictional cards; no address to visit or server to start.

Activity cards, out of order:
C: The laptop viewer receives picture data in working memory.
A: The picture service stores the original on its remote disk.
D: The learner selects Save; the viewer writes a local laptop copy.
B: The laptop viewer asks the picture service for the picture.
Assume A happens before this request, and no synchronization is set up.

Put the four cards in order. Label the requester and responder.
After D, draw the two places that hold a saved picture.
Predict whether editing only the laptop copy changes the original.

Separate question exchange:
A browser requests a new note. A note server responds.
Which participant is the client in this exchange?
Answer format: browser or server.