DynamoDB MCQ Questions And Answers

DynamoDB MCQs : This section focuses on "Basics" of DynamoDB. These Multiple Choice Questions (MCQ) should be practiced to improve the DynamoDB skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. Amazon DynamoDB is a fully managed proprietary?

A. Centralised database
B. Commercial database
C. NoSQL database
D. Relational database

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2. Amazon DynamoDB Initial release date?

A. 2011
B. 2012
C. 2013
D. 2014

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3. How many types of primary keys does DynamoDB supports?

A. 2
B. 3
C. 4
D. 5

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4. How many types of secondary indexes does DynamoDB supports?

A. 2
B. 3
C. 4
D. 5

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5. Which index that has the same partition key as the base table, but a different sort key?

A. Global secondary index
B. Local secondary index
C. Both A and B
D. None of the above

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6. A read capacity unit is a single consistent read per second for items no larger than ?

A. 1KB
B. 2KB
C. 4KB
D. 8KB

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7. How many attributes does DynamoDB allows?

A. 5
B. 10
C. 15
D. 20

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8. Names must conform to a minimum of 3 characters in length, and a maximum of ?

A. 31
B. 63
C. 127
D. 255

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9. Expression strings have a _____ limit.

A. 1KB
B. 2KB
C. 4KB
D. 8KB

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10. Which key also known as the Composite Primary Key?

A. Partition Key
B. Sort Key
C. Both A and B
D. None of the above

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11. Which types represent a single value, and include number, string, binary, Boolean, and null?

A. Scalar
B. Document
C. Set
D. None of the above

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12. Maximum length of String data type is?

A. 200KB
B. 400KB
C. 600KB
D. 800KB

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13. In Action Data Types, which represents key table and index schema?

A. Capacity
B. AttributeDefinition
C. PutRequest
D. TableDescription

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14. In Action Data Types, which represents PutItem requests?

A. PutRequest
B. TableDescription
C. LocalSecondaryIndex
D. ProvisionedThroughput

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15. DynamoDB offers ________ low-level actions for data reading.

A. 1
B. 2
C. 3
D. 4

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16. DynamoDB uses partitions for data storage.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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17. DynamoDB uses eventually consistent and strongly consistent reads to support dynamic application needs.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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18. Which of the following are benefits of using Amazon DynamoDB?

A. It is scalable
B. It provides the users high throughput at very low latency.
C. It is durable and highly available
D. All of the above

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19. DynamoDB does not supports Null values.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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20. Does DynamoDB support in-place atomic updates?

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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