12 real Pricing & Limits questions from the Firebase bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.
1. What is Spark plan?
Junior
A.the expense of tallying a large collection by fetching its documents, mitigated by maintaining a counter or using an aggregation query
B.the pay-as-you-go tier that unlocks outbound calls and Cloud Functions while still including the free quota each month
C.the free no-cost tier with fixed daily quotas that blocks outbound networking and most paid integrations
D.the model where Firestore charges by each record returned, so a query touching many docs costs proportionally more
A.Per-document read billing — the model where Firestore charges by each record returned, so a query touching many docs costs proportionally more
B.Per-document read billing — the free no-cost tier with fixed daily quotas that blocks outbound networking and most paid integrations
C.Per-document read billing — the expense of tallying a large collection by fetching its documents, mitigated by maintaining a counter or using an aggregation query
D.Per-document read billing — the pay-as-you-go tier that unlocks outbound calls and Cloud Functions while still including the free quota each month
11. Which term means: "the expense of tallying a large collection by fetching its documents, mitigated by maintaining a counter or using an aggregation query"?
A.Count-from-reads cost trap — the pay-as-you-go tier that unlocks outbound calls and Cloud Functions while still including the free quota each month
B.Count-from-reads cost trap — the model where Firestore charges by each record returned, so a query touching many docs costs proportionally more
C.Count-from-reads cost trap — the free no-cost tier with fixed daily quotas that blocks outbound networking and most paid integrations
D.Count-from-reads cost trap — the expense of tallying a large collection by fetching its documents, mitigated by maintaining a counter or using an aggregation query
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