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What is the MongoDB C100DEV Exam

MongoDB is a high-performance, open-source, document database that provides the scalability and flexibility of NoSQL in a standard SQL interface. MongoDB supports data structures, schemas, and queries that are common in modern applications. The most famous and popular IT certifications include MongoDB C100DEV Dumps. The MongoDB Certified Developer Associate certification is intended for developers who want to learn MongoDB and apply it to their work. The exam covers the following areas:

• Data Modeling with Documents and Objects
• Aggregation Framework
• Database Administration

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MongoDB Certified Developer Associate Exam Sample Questions (Q121-Q126):

NEW QUESTION # 121
Select all true statements about text search in MongoDB.

• A. To perform text searches on a collection we use $text operator.
• B. Text indexes can include any field whose value is a string.
• C. MongoDB provides text indexes to support text search queries on string content.
• D. A collection can only have one text search index, but that index can cover multiple fields.
• E. Text indexes cannot include any field whose value is an array of string elements.
• F. To perform text search queries, you must have a text index on your collection.

Answer: A,B,C,D,F Explanation:
https://docs.mongodb.com/manual/text-search/
NEW QUESTION # 122
There is a collection named products in MongoDB database. Your coworker wants to know how many products are in this collection (number of documents in the collection) from the United States. Which query should you use?

• A. db.products.find( { country: "USA" } ).count()
• B. db.products.find( { country: "USA" } )
• C. db.products.find( country == "USA" ).count()
• D. db.products.find( country = "USA" ).count()

Answer: A Explanation:
https://docs.mongodb.com/manual/reference/method/db.collection.find/
NEW QUESTION # 123
Which of the following processes are heavily reliant on available CPU?

• A. Write operations
• B. Aggregation
• C. Read operations

Answer: A,B,C
NEW QUESTION # 124
You have the following replica set configuration: conf = { "id": "replset", "version": 1, "protocolVersion": 1, "members": [ { "id": 0, "host": "192.168.120.24:27017", "priority": 2, "votes": 1 }, { "id": 1, "host": "192.168.120.24:27018", "priority": 1, "votes": 1 }, { "id": 2, "host": "192.168.120.24:27018", "priority": 1, "votes": 1 } ] } Select all true statements about this configuration.

• A. This configuration is incorrect. Replica set cannot have three members.
• B. This configuration is incorrect. You can only specify a priority of 0 or 1.
• C. This configuration is incorrect. Host information must be unique for each member in a replica set.
• D. This configuration is correct.

Answer: C Explanation:
https://docs.mongodb.com/manual/replication/#replication
NEW QUESTION # 125
How to connect to mongod instance and authenticate as root?

• A. mongo --username root --password root123 --authenticationDatabase admin
• B. mongoroot --authenticationDatabase admin
• C. mongo --authenticationDatabase admin

Answer: A Explanation:
https://docs.mongodb.com/v4.4/mongo/#mongodb-instance-with-authentication
NEW QUESTION # 126
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