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MongoDB C100DBA Exam Syllabus Topics:

SectionObjectives
Topic 1: CRUD Operations- Data Manipulation
  • 1. Read Queries
  • 2. Delete Operations
  • 3. Update Operations
  • 4. Insert Operations
Topic 2: Server Administration- Database Operations
  • 1. Monitoring
  • 2. Configuration Management
  • 3. Backup and Restore
  • 4. Storage Management
Topic 3: Philosophy and Features- MongoDB Architecture
  • 1. Document Model
  • 2. Collections and Databases
  • 3. Scalability Concepts
  • 4. High Availability Concepts
Topic 4: Indexes- Index Management
  • 1. Index Selection
  • 2. Compound Indexes
  • 3. Query Performance Optimization
  • 4. Single Field Indexes
Topic 5: Replication- Replica Sets
  • 1. Write Concerns
  • 2. Read Preferences
  • 3. Elections
  • 4. Primary and Secondary Nodes
Topic 6: Application Administration- Security and Access Control
  • 1. Role-Based Access Control
  • 2. Authorization
  • 3. Authentication
  • 4. User Management
Topic 7: 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 (Q46-Q51):

NEW QUESTION # 46
What is the output of following two commands in MongoDB: db. posts. insert({n_id " :l}) db.posts.insert({ "
_id " :l})

Answer: C


NEW QUESTION # 47
Below is a sample document in a given collection test.
{ a : 5, b : 3, c: 2, d : 1 }
Given a compound index { a: 1, b:l, c:l, d:l}, Which of the below query will not use in-memory sorting? Select all valid.

Answer: B,C


NEW QUESTION # 48
Below is a sample document of "orders" collection

Answer:

Explanation:
$project


NEW QUESTION # 49
Which mongodb tools allow us to work with our data in a human readable format?

Answer: B,D


NEW QUESTION # 50
Given a collection posts as shown below having a document array comments, which of the following command will create an index on the comment author descending?