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MongoDB C100DBA Exam Syllabus Topics:

Section	Objectives
Replication	- Replica Sets 1. Elections 2. Read Preferences 3. Primary and Secondary Nodes 4. Write Concerns
Philosophy and Features	- MongoDB Architecture 1. Collections and Databases 2. High Availability Concepts 3. Scalability Concepts 4. Document Model
Indexes	- Index Management 1. Index Selection 2. Query Performance Optimization 3. Single Field Indexes 4. Compound Indexes
Application Administration	- Security and Access Control 1. User Management 2. Role-Based Access Control 3. Authorization 4. Authentication
Server Administration	- Database Operations 1. Configuration Management 2. Storage Management 3. Monitoring 4. Backup and Restore
CRUD Operations	- Data Manipulation 1. Read Queries 2. Update Operations 3. Insert Operations 4. Delete Operations
Sharding	- Cluster Scaling 1. Query Routing 2. Balancer Operations 3. Shard Keys 4. Chunk Distribution

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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q69-Q74):

NEW QUESTION # 69
Which of the following operator can be used to limit the number of documents in an array field of a document after an update is performed?

A. $arrayLimit
B. $push along with $each, $sort and $slice
C. None of the above
D. $removeFromSet

Answer: B

NEW QUESTION # 70
Aggregation Pipelines have a limit of:

A. 2 MB document and 100 MB RAM
B. 2 MB document and no limit on RAM
C. 16 MB document and 100 MB RAM
D. No limit on document and 100 MB RAM

Answer: C

NEW QUESTION # 71
Consider the following document from the products collection:

What does the following query using $elemMatch return? db.products.find( { product_code: " 345678 " }, { variations: { $elemMatch: { size:

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