MongoDB is a popular NoSQL database system renowned for its flexibility and scalability. It uses a document-oriented model, storing data in JSON-like BSON format, allowing for dynamic schemas and easy data manipulation. MongoDB's distributed architecture supports horizontal scaling, ensuring high availability and performance. It's widely utilized for applications requiring real-time data access and complex data structures. Its features include automatic sharding, replication, and support for geospatial data, making it a versatile choice for a broad range of industries, from e-commerce and social media to IoT and big data analytics.
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Practice Test
101. What is the primary purpose of text search in MongoDB?
A. Data encryption
B. Data modeling
C. Full-text search
D. Data replication
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Answer: Full-text search
102. Which text index type in MongoDB is designed for case-insensitive text search?
A. Text Index
B. Compound Index
C. Case-Insensitive Index
D. Collation Index
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Answer: Collation Index
103. What does a text index in MongoDB allow you to do?
A. Index numeric values
B. Index text fields
C. Index binary data
D. Index date values
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Answer: Index text fields
104. Which operator is used to perform text searches in MongoDB?
A. $search
B. $text
C. $find
D. $query
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Answer: $text
105. How can you specify the text search query in MongoDB?
A. Use regular expressions
B. Use a separate text file
C. Use the "$search" operator
D. Use the "$text" operator
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Answer: Use the "$text" operator
106. What is the primary goal of text search in MongoDB?
A. Sorting documents
B. Searching for specific values
C. Efficiently searching for text
D. Optimizing data storage
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Answer: Efficiently searching for text
107. In MongoDB, what is the purpose of the "weights" option in text indexes?
A. Control the indexing process
B. Define the text field
C. Specify the search query
D. Adjust the search relevancy
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Answer: Adjust the search relevancy
108. How can you control the search relevancy of individual text index fields in MongoDB?
A. Use the "$text" operator with the "score" option
B. Adjust the "weights" option
C. Use the "$sort" operator
D. Create a compound index
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Answer: Adjust the "weights" option
109. What does the "default_language" option in a text index specify in MongoDB?
A. The default search language
B. The language of the document
C. The indexing language
D. The system's default language
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Answer: The default search language
110. In MongoDB, what is the "textScore" field used for in a query result?
A. Sorting the documents
B. Calculating text relevance
C. Counting the number of documents
D. Defining the text query
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Answer: Calculating text relevance
