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Which Pub/Sub delivery model should a Data Engineer use when subscribers should pull messages on their own schedule — vs. push delivery to an HTTPS endpoint?
ACloud DNS
BPull subscription
CPush subscription only
DCloud Memorystore
Answer & Solution
Correct answer: B. Pull subscription
Pull subscriptions let consumers fetch at their pace (per PDE §2.2). Push is the alternate model; the others aren't delivery modes.
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