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MongoDB C100DBA Exam Syllabus Topics:

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

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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q92-Q97):

NEW QUESTION # 92
Which of the following aggregation commands in MongoDB does not support sharded collections?

Answer: C


NEW QUESTION # 93
The Production MongoDB Cluster contains Personally Identifiable Information, such as Name, Demographics, Date of Birth, and Government Identification Number. Due to strict compliance requirements, a database administrator is tasked to ensure a client ' s side encryption.
What feature should the administrator use to meet the requirement?

Answer: B

Explanation:
Queryable Encryption is designed for client-side protection of sensitive fields while preserving supported query capabilities over encrypted values. With this model, appropriately configured client drivers encrypt selected fields before data is transmitted to the MongoDB server and decrypt authorized results on the client side. That architecture is well suited to highly sensitive PII such as government identification numbers, dates of birth, or regulated demographic information because the database server stores encrypted field values rather than plaintext for those protected fields. The Encrypted Storage Engine, option A, protects database files at rest but the server can still process decrypted data internally. TLS/SSL, option B, protects data while it is moving across the network, not the application field values from the database server itself. Role-Based Access Control, option C, restricts which authenticated principals can perform actions but does not itself cryptographically protect the field contents. Queryable Encryption complements, rather than replaces, TLS, authentication, authorization, auditing, and storage encryption. For the specific requirement of client-side encryption of sensitive application data, option D is the correct MongoDB feature.
Study Guide reference/topic:Security, Networking, and Encryption - Queryable Encryption, client-side encryption, sensitive fields, and key management.


NEW QUESTION # 94
Below is a sample document of " orders " collection

Answer:

Explanation:
$sort


NEW QUESTION # 95
Consider the following posts document:

Which of the following queries will return the documents but with only the first two tags in the tags array?

Answer: B


NEW QUESTION # 96
Which of the following is supported by MongoDB?

Answer: D


NEW QUESTION # 97
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