DynamoDB interview questions

15 DynamoDB questions from the NoSQL bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.

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1. What is Partition key?

Junior
  1. A.a billing mode that charges per request and auto-scales without pre-configuring throughput units
  2. B.an alternate sort attribute that shares the base table partition key for additional query orderings
  3. C.an alternate key structure that supports queries on non-key attributes and can span all partitions
  4. D.the required attribute DynamoDB hashes to place an item and spread load across storage

Answer + AI explanation with Pro

2. Which term means: "the required attribute DynamoDB hashes to place an item and spread load across storage"?

Junior
  1. A.Global secondary index
  2. B.Partition key
  3. C.Local secondary index
  4. D.On-demand capacity

Answer + AI explanation with Pro

3. Which statement is correct?

Junior
  1. A.Partition key — an alternate key structure that supports queries on non-key attributes and can span all partitions
  2. B.Partition key — an alternate sort attribute that shares the base table partition key for additional query orderings
  3. C.Partition key — the required attribute DynamoDB hashes to place an item and spread load across storage
  4. D.Partition key — a billing mode that charges per request and auto-scales without pre-configuring throughput units

Answer + AI explanation with Pro

4. What is Single-table design?

Senior
  1. A.a billing mode that charges per request and auto-scales without pre-configuring throughput units
  2. B.packing multiple entity types into one table with overloaded keys to serve all access patterns without joins
  3. C.an alternate key structure that supports queries on non-key attributes and can span all partitions
  4. D.the required attribute DynamoDB hashes to place an item and spread load across storage

Answer + AI explanation with Pro

5. Which term means: "packing multiple entity types into one table with overloaded keys to serve all access patterns without joins"?

Senior
  1. A.Single-table design
  2. B.Global secondary index
  3. C.Partition key
  4. D.Local secondary index

Answer + AI explanation with Pro

6. Which statement is correct?

Senior
  1. A.Single-table design — an alternate key structure that supports queries on non-key attributes and can span all partitions
  2. B.Single-table design — packing multiple entity types into one table with overloaded keys to serve all access patterns without joins
  3. C.Single-table design — a billing mode that charges per request and auto-scales without pre-configuring throughput units
  4. D.Single-table design — the required attribute DynamoDB hashes to place an item and spread load across storage

Answer + AI explanation with Pro

7. What is Global secondary index?

Mid
  1. A.an alternate key structure that supports queries on non-key attributes and can span all partitions
  2. B.the required attribute DynamoDB hashes to place an item and spread load across storage
  3. C.an alternate sort attribute that shares the base table partition key for additional query orderings
  4. D.a billing mode that charges per request and auto-scales without pre-configuring throughput units

Answer + AI explanation with Pro

8. Which term means: "an alternate key structure that supports queries on non-key attributes and can span all partitions"?

Mid
  1. A.On-demand capacity
  2. B.Global secondary index
  3. C.Local secondary index
  4. D.Partition key

Answer + AI explanation with Pro

9. Which statement is correct?

Mid
  1. A.Global secondary index — the required attribute DynamoDB hashes to place an item and spread load across storage
  2. B.Global secondary index — packing multiple entity types into one table with overloaded keys to serve all access patterns without joins
  3. C.Global secondary index — an alternate key structure that supports queries on non-key attributes and can span all partitions
  4. D.Global secondary index — an alternate sort attribute that shares the base table partition key for additional query orderings

Answer + AI explanation with Pro

10. What is Local secondary index?

Mid
  1. A.an alternate sort attribute that shares the base table partition key for additional query orderings
  2. B.packing multiple entity types into one table with overloaded keys to serve all access patterns without joins
  3. C.the required attribute DynamoDB hashes to place an item and spread load across storage
  4. D.a billing mode that charges per request and auto-scales without pre-configuring throughput units

Answer + AI explanation with Pro

11. Which term means: "an alternate sort attribute that shares the base table partition key for additional query orderings"?

Mid
  1. A.On-demand capacity
  2. B.Single-table design
  3. C.Global secondary index
  4. D.Local secondary index

Answer + AI explanation with Pro

12. Which statement is correct?

Mid
  1. A.Local secondary index — an alternate sort attribute that shares the base table partition key for additional query orderings
  2. B.Local secondary index — the required attribute DynamoDB hashes to place an item and spread load across storage
  3. C.Local secondary index — a billing mode that charges per request and auto-scales without pre-configuring throughput units
  4. D.Local secondary index — packing multiple entity types into one table with overloaded keys to serve all access patterns without joins

Answer + AI explanation with Pro

13. What is On-demand capacity?

Mid
  1. A.a billing mode that charges per request and auto-scales without pre-configuring throughput units
  2. B.packing multiple entity types into one table with overloaded keys to serve all access patterns without joins
  3. C.the required attribute DynamoDB hashes to place an item and spread load across storage
  4. D.an alternate sort attribute that shares the base table partition key for additional query orderings

Answer + AI explanation with Pro

14. Which term means: "a billing mode that charges per request and auto-scales without pre-configuring throughput units"?

Mid
  1. A.On-demand capacity
  2. B.Partition key
  3. C.Single-table design
  4. D.Local secondary index

Answer + AI explanation with Pro

15. Which statement is correct?

Mid
  1. A.On-demand capacity — an alternate sort attribute that shares the base table partition key for additional query orderings
  2. B.On-demand capacity — a billing mode that charges per request and auto-scales without pre-configuring throughput units
  3. C.On-demand capacity — the required attribute DynamoDB hashes to place an item and spread load across storage
  4. D.On-demand capacity — an alternate key structure that supports queries on non-key attributes and can span all partitions

Answer + AI explanation with Pro

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