MongoDB MCQ Questions and Answers
MongoDB MCQ Questions with Answers are designed to test your understanding of NoSQL database concepts, document storage, and CRUD operations. These programming questions and answers help students prepare for technical interviews and certification exams. Practicing MongoDB MCQs enhances your ability to handle real-world data models and query optimization, making you job-ready for placements at TCS, Infosys, and Cognizant.
MongoDB MCQ
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43 questions
21. Which is the primary daemon process for MongoDB?
- mongod
- mongos
- syspathlog
- logpath
22. What file does the mongo shell load on startup?
- mongoc.js
- mongorc.js
- mongo.js
- all of the mentioned
23. What is a MongoDB "shard"?
- An index type
- A cache collection
- A backup copy
- A part of a dataset distributed across servers
24. Which pipeline is used for aggregation in MongoDB?
- knowledge processing
- information processing
- data processing
- none of the mentioned
25. Which avoids repetition of data in MongoDB schema?
- Cursor
- Collectors
- DeReferences
- References
26. Which statement is incorrect about documents in MongoDB?
- Field names cannot contain null character
- Field names cannot contain dot (.)
- Field names cannot start with $
- None of the mentioned
27. MongoDB documents are composed of field-and-value pairs. Correct structure?
- field1: value1
- field1: value1;
- field1:; value1
- none of the mentioned
28. Which statement is true about MongoDB schema design?
- Only supports simple types
- Enforces primary keys
- Requires fixed schema
- Flexible, schema-less collections
29. What does BSON stand for?
- Binary JSON
- Binary Serialized Object Notation
- Basic Standard Object Notation
- Binary Structure Object Network
30. MongoDB's data storage format is best described as:
- Flat files
- JSON-like documents
- Key-value pairs
- Rows and columns