C100DBA Certification Test Questions & Authorized C100DBA Test Dumps

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MongoDB C100DBA Exam Syllabus Topics:

Section	Objectives
Topic 1: Indexing and Performance Tuning	- Explain plans and diagnostics - Index types and usage - Query performance optimization
Topic 2: Security	- Authentication and authorization - Role-based access control (RBAC) - Encryption at rest and in transit
Topic 3: Backup, Restore, and Operations	- Monitoring and maintenance - Backup strategies and tools - Restore procedures
Topic 4: Aggregation Framework	- Aggregation operators - Aggregation pipeline stages - Data transformation and grouping
Topic 5: MongoDB CRUD Operations	- Insert, update, and delete operations - Working with documents and BSON types - Querying and filtering documents
Topic 6: Data Modeling	- Relationships in MongoDB - Embedding vs referencing - Schema design principles
Topic 7: Replication and High Availability	- Failover and elections - Read/write concerns - Replica set architecture
Topic 8: Sharding and Scalability	- Shard keys and distribution strategy - Sharded cluster architecture - Balancing and scaling operations

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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q56-Q61):

NEW QUESTION # 56
Below is a sample document of "orders" collection

Answer:

Explanation:
$project

NEW QUESTION # 57
Which of the following statements are true about the $match pipeline operator? Check all that apply.

A. You should use it early as possible in the pipeline
B. It can be used as many time as needed.
C. It has a sintax similar to findQ commands.

Answer: A,B,C

NEW QUESTION # 58
What does the output x of the following MongoDB aggregation query result into; db.posts.aggregate( [ { $group: { _id; "$author", x: { $sum: $likes } } } ] )

A. Number of posts by an author
B. Sum of likes on all the posts by an author, grouped by author
C. Average of likes on all the posts of an author, grouped by author
D. Sum of likes on all the posts by all the authors

Answer: B

NEW QUESTION # 59
Consider that the posts collection contains an array called ratings which contains ratings given to the post by various users in the following format:

Which of the following query will return all the documents where the ratings array contains elements that in some combination satisfy the query conditions?

A. db.inventory.find( { ratings: { $elemMatch: { $gt: 3, $lt: 6 }
B. db.inventory.find( { ratings: { ratings: { $gt: 5, $lt: 9 } } } )
C. db.inventory.find( { ratings: { ratings.$: { $gt: 5, $lt: 9 } } } )
D. db.inventory.find( { ratings: { $elemMatch: { $gte: 3, $lte: 6 } } } )

Answer: B

NEW QUESTION # 60
Below is a sample document of " orders " collection

Answer:

Explanation:
$project

NEW QUESTION # 61
......

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