MongoDB Interview Questions - 11 | Snaprecruit.com

MongoDB Interview Questions - 11 | Snaprecruit.com

MongoDB interview questions part 11

MongoDB interview questions part 11

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Total Questions: 20

1. With the WiredTiger storage engine, use of _______ is strongly recommended to avoid performance issues

Correct Answer is : XFS

2. Point out the correct statement :

Correct Answer is : zlib provides better compression rate but has a higher performance cost

3. MongoDB requires a filesystem that supports ______ on directories.

Correct Answer is : fsync()

4. MongoDB Cloud Manager provides integration with Amazon Web Services (AWS) and lets you deploy new ______ instances directly from MongoDB Cloud Manager.

Correct Answer is : EC2

5. Point out the wrong statement :

Correct Answer is : By default, WiredTiger uses zip compression library

6. WiredTiger can compress collection data using either snappy or zlib compression library.

Correct Answer is : snappy

7. Which of the following is especially important in Sharded Clusters ?

Correct Answer is : NSS

8. The TCP keepalive on the Azure load balancer is ______ seconds by default.

Correct Answer is : 100

9. On Linux, use the ______ command to check if disk I/O is a bottleneck for your database.

Correct Answer is : iostat

10. _____ is a command-line tool for monitoring network use.

Correct Answer is : bwm-ng

11. Which of the following relationship uses references to describe documents between connected data ?

Correct Answer is : One-to-Many Relationships with Embedded Documents

12. Point out the correct statement :

Correct Answer is : One-to-One Relationships with embedded documents presents a data model that uses embedded documents to describe one-to-one relationships between connected data

13. Which of the following is used to avoid repetition of data in MongoDB schema ?

Correct Answer is : References

14. Point out the wrong statement :

Correct Answer is : Collections do enforce document structure

15. __________ define what records to select for read, update, and delete operations.

Correct Answer is : Query selector

16. The ___________ JavaScript shell and the MongoDB language drivers translate between BSON and the language-specific document representation.

Correct Answer is : mongo

17. Which of the following statement is incorrect about documents in MongoDB ?

Correct Answer is : None of the mentioned

18. ___________ data models allow applications to store related pieces of information in the same database record.

Correct Answer is : Embedded

19. Point out the correct statement :

Correct Answer is : The key consideration for the structure of your documents is the decision to embed or to use references

20. Embedded data model is used when you have _________ relationships between entities

Correct Answer is : contains

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