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MongoDB C100DBA Exam Syllabus Topics:

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

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The C100DBA exam is the right way to learn new in-demand skills and upgrade knowledge. After passing the MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) (C100DBA) exam the successful candidates can gain multiple personal and professional benefits with the real MongoDB C100DBA Exam Questions. Validation of skills, more career opportunities, increases in salary, and increases in the chances of promotion are some prominent benefits of the MongoDB C100DBA certification exam.

MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q96-Q101):

NEW QUESTION # 96
Consider a collection posts which has fields: Jd, post_text, post_author, post_timestamp, post_tags etc.
Which of the following query retrieves ONLY the key named post_text from the first document retrieved?

A. db.posts.finOne({},{_id:0, post_text:1})
B. db.posts.findOne({post_text: 1})
C. db.posts.find({},{_id:Of post_text:1})
D. db.posts.finOne({},{post_text:1})

Answer: A

NEW QUESTION # 97
Using an arbiter allows one to easily ensure an odd number of voters in replica sets. Why is this important?

A. To add greather redundancy
B. To help in disaster recovery
C. To enable certain read preference settings
D. For more efficient backup operations
E. To protect agains network partitions

Answer: E

NEW QUESTION # 98
Below is a sample document of "orders" collection

A. $sort

Answer: A

NEW QUESTION # 99
Which mongodb tool is used to report details on number of database operations in MongoDB?

A. mongostat
B. mongotop
C. mongodump
D. mongorestore

Answer: A

NEW QUESTION # 100
Which of the documents below will be retrieved by the following query? Assume the documents are stored in a collection called "sample". Check all that apply.
db.sample.find( { "$or" : [ { "a" : { "$in" : [ 3, 10] > }, { "b" : { "$lt" : 2 > > ] > )

A. {". Jd" : 6, "a" : 1, "c" : 1, "b" : 5}
B. {". Jd" : : 2, "a" : 2, "c" : : 0, "b" : 1}
C. {". Jd" : : 5, "a" : 3, "c" : : 0, "b" : 12}
D. {". Jd" : : 4, "a" : 5, "c" : : 0, "b" : 17}
E. { \ Jd" : 10,"a" : 3, "c" : 1, "b" : 1}
F. {''_ _id" : 3, "a" : 4, "c" : 0, "b" : 14}
G. {''_ Jd" : 7, "a" : 8, "c" : 1, "b" : 7}
H. { ''\ Jd" : 9, "a" : 17, "c" : 1, "b" : 1}
I. {". Jd" : : 1, "a" : 0, "c" : : 0, "b" : 2}
J. {". Jd" : : 8, "a" : 11, "c" : 1, "b" : 0}

Answer: B,C,E,H,J

NEW QUESTION # 101
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