2026 MongoDB C100DBA: MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Authoritative Real Exams

BTW, DOWNLOAD part of PassTestking C100DBA dumps from Cloud Storage: https://drive.google.com/open?id=1RR72rAw75f2Sl4lYM6iFlCSCelVjjWS-

Are you worried about you poor life now and again? Are you desired to gain a decent job in the near future? Do you dream of a better life? Do you want to own better treatment in the field? If your answer is yes, please prepare for the C100DBA Exam. It is known to us that preparing for the exam carefully and getting the related certification are very important for all people to achieve their dreams in the near future.

MongoDB C100DBA Exam Syllabus Topics:

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

>> C100DBA Real Exams <<

Quiz 2026 Accurate MongoDB C100DBA: MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Real Exams

Our C100DBA exam materials have three different versions: the PDF, Software and APP online. All these three types of C100DBA learning quiz win great support around the world and all popular according to their availability of goods, prices and other term you can think of. C100DBA practice materials are of reasonably great position from highly proficient helpers who have been devoted to their quality over ten years to figure your problems out and help you pass the exam easily.

MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q130-Q135):

NEW QUESTION # 130
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.find({},{_id:Of post_text:1})
C. db.posts.findOne({post_text: 1})
D. db.posts.finOne({},{post_text:1})

Answer: A

NEW QUESTION # 131
Which mongodb tools allow us to work with our data in a human readable format?

A. mongoexport
B. mongodump
C. mongoimport
D. mongostat

Answer: A,C

NEW QUESTION # 132
What command set removes node-1.cluster1.mycompany.local:27017 and node-2.cluster1.mycompany.local:
27017 from the replica set, then adds node-1.cluster1.mycompany.local:27017 back to the replica set?

A. rs.removeNode( " node-1.cluster1.mycompany.local:27017 " )rs.removeNode( " node-2.cluster1.
mycompany.local:27017 " )rs.add({ host: " node-1.cluster1.mycompany.local:27017 " })
B. rs.remove( " node-1.cluster1.mycompany.local:27017 " )rs.remove( " node-2.cluster1.mycompany.local:
27017 " )rs.addNode({ host: " node-1.cluster1.mycompany.local:27017 " })
C. rs.removeNode( " node-1.cluster1.mycompany.local:27017 " )rs.removeNode( " node-2.cluster1.
mycompany.local:27017 " )rs.addNode({ host: " node-1.cluster1.mycompany.local:27017 " })
D. rs.remove( " node-1.cluster1.mycompany.local:27017 " )rs.remove( " node-2.cluster1.mycompany.local:
27017 " )rs.add({ host: " node-1.cluster1.mycompany.local:27017 " })

Answer: D

Explanation:
The supported mongosh helpers for replica-set membership changes are rs.remove() and rs.add(). rs.remove (hostname) removes the member whose host string matches the supplied host:port, while rs.add() adds a new member using either a host string or a member configuration document that includes a host field. Option C uses those documented methods in the required sequence: remove node 1, remove node 2, then add node 1 back. The names rs.removeNode() and rs.addNode() shown in the other options are not standard MongoDB replica-set helper methods. Membership changes must be performed carefully because modifying voting or data-bearing membership can affect majority calculations, elections, and availability. Administrators normally execute membership changes while connected to the current primary, allow configuration propagation, and verify replica-set health afterward with rs.status() or related diagnostics. If a removed data-bearing node is later re-added, it may need to synchronize depending on how far its data has diverged from the current replica- set history. Among the choices, option C is the only valid command sequence.
Study Guide reference/topic:Cluster Reliability and Data Resilience - replica-set membership, rs.remove(), rs.
add(), and topology changes.

NEW QUESTION # 133
What is the output of following two commands in MongoDB: db. posts. insert({n_id " :l}) db.posts.insert({ "
_id " :l})

A. It will insert two documents and throw a warning to the user
B. This will throw a duplicate key error
C. Two documents will be inserted with _id as 1
D. MongoDB will automatically increment the _id of the second document as 2

Answer: B

NEW QUESTION # 134
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?

A. db.posts.createIndex({comments.$.author " : {$desc:l > });
B. db.posts.createIndex({commerits.$.author " :-l});
C. db.posts.createIndex({comments.author " :-l});

Answer: C

NEW QUESTION # 135
......

Comfortable life will demoralize and paralyze you one day. So you must involve yourself in meaningful experience to motivate yourself. For example, our C100DBA study materials perhaps can become your new attempt. In fact, learning our C100DBA learning quiz is a good way to inspire your spirits. Not only that you can pass the exam and gain the according C100DBA certification but also you can learn a lot of knowledage and skills on the subjest.

C100DBA Exam Vce Format: https://www.passtestking.com/MongoDB/C100DBA-practice-exam-dumps.html

P.S. Free 2026 MongoDB C100DBA dumps are available on Google Drive shared by PassTestking: https://drive.google.com/open?id=1RR72rAw75f2Sl4lYM6iFlCSCelVjjWS-