1. Connect a documented method to a concept
A valid answer identifies a real method or option and explains its role. For example,Data.subscribe(topic_filter=..., on_message=...) connects a data consumer to matching application messages.
The Python SDK then performs its transport and frame-processing work underneath that API.
The publisher/subscriber lab demonstrates this method.
Check your answer: include the documentation link and describe the behavior without inventing a method name.
2. Explain why there are multiple relays
Capacity and physical distance are independent reasons. A relay can run out of connection or processing capacity even when every client is nearby. A lightly loaded relay can still be too far away for a distant client’s delay target. Either constraint can justify additional relays. Their placement must also account for forwarding between regions and operational requirements. Check your answer: distinguish adding capacity within a region from placing capacity closer to users.3. Explain when objects arrive
The subscription must be accepted before its normal media delivery can proceed.SUBSCRIBE_OK represents acceptance in the exchange illustrated by the lesson.
The actual media arrives afterward through object delivery, rather than inside that acceptance message.
Setup and namespace publication serve different roles.
Exact messages depend on the protocol version used by the deployment.
Check your answer: distinguish permission to receive from receipt of an object.