MongoDB Inc. Interview Questions

MongoDB Inc. interview questions

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Total Questions: 5

1. MongoDB is a__ type of database

A. SQL database

B. NoSQL database

C. Column database

D. Row database

Correct Answer is : NoSQL database

2. mongoimport command is used to:

A. import all the data from one database to another

B. import all the data from one collection to another

C. imports content from an Extended JSON, CSV, or TSV export created by mongoexport

D. import all the MongoDB data from one format to another

Correct Answer is : imports content from an Extended JSON, CSV, or TSV export created by mongoexport

3. Which of the following is the most important consideration while designing the schema for MongoDB?

A. The schema should match the data access and query patterns

B. The schema should be kept in 3NF similar to SQL schemas

C. The schema should focus on creating possible embedded documents

D. The schema should contain maximum indexes

Correct Answer is : The schema should match the data access and query patterns

4. Which option should be used to update all the documents with the specified condition in the MongoDB query?

A. updateAll instead of update

B. specify {multi : true} as the third parameter of update command

C. specify {all: true} as the third parameter of update command

D. specify {updateAll: true} as the third parameter of update command

Correct Answer is : specify {multi : true} as the third parameter of update command

5. You can implement a multi-document transaction in MongoDB using which of the following concept?

A. Tailable Cursor

B. Two Phase Commits

C. Compound Indexing

D. Multi Document Transaction is not supported by MongoDB

Correct Answer is : Two Phase Commits

MongoDB Inc. interview questions