問題文
Two of five subscribers on a topic do not receive alarm messages. The other three do. What should be checked first?
選択肢
- Whether the alarm has a dimension filter that excludes them, and a filter of that kind narrows down the streams the alarm reports on.
- Whether the topic has reached its subscription limit, because subscriptions beyond the limit are created successfully but silently excluded from delivery until an existing one is removed.
- Whether those two subscriptions have been confirmed, because messages go only to active subscriptions.
- Whether the message exceeded the size limit for those two types, and whether a shorter message would reach all five of the subscribers.