Interview question based on skill :
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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
