MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) exam test torrent & C100DBA updated training vce & C100DBA test study dumps

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MongoDB C100DBA Exam Syllabus Topics:

Section	Weight	Objectives
Monitoring, Performance and Troubleshooting	10%	- Diagnostics and resolving common issues - Performance tuning and optimization - Monitoring tools and metrics
CRUD Operations and Indexing	20%	- Index types, creation, and management - Query optimization and aggregation - Create, Read, Update, Delete operations
Backup, Recovery and Maintenance	10%	- Logical and physical backup methods - Restore procedures and disaster recovery - Data consistency and integrity checks
Sharding and Scalability	10%	- Query routing and cluster operations - Shard keys, chunk management, balancing - Sharded cluster architecture
MongoDB Architecture and Deployment	20%	- Core concepts, JSON/BSON, data model - Storage engines and server management - Installation and configuration
Replication and High Availability	15%	- Failover, elections, read/write concern - Deployment and maintenance of replica sets - Replica set architecture and components
Security and Access Control	15%	- Role-based access control - Authentication mechanisms - Encryption, auditing, and security best practices

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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q112-Q117):

NEW QUESTION # 112
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?

A. Both "db.posts.find({author:"Tom"},{tags:{$slice:2}})" and
"db.posts.find({author:"Tom"}).limit($slice: {tags:2})" are valid. $slice works both with projection and limit.
B. db.posts.find({author:"Tom">,{tags:{$slice:2})
C. db.posts.find({author:"Tom"}.limit($slice:{tags:2>)
D. db.posts.find({author:"Tom"}.limit({tags:2})

Answer: B

NEW QUESTION # 113
Which of the following commands will return all the posts with number of likes greater than 100 and less than 200, both inclusive?

A. db.posts.find({ likes : { $gt : 100 , $lte : 200 } } );
B. db.posts.find({ likes : { $gte : 100 , $lte : 200 } } );
C. db.posts.find({ likes : { $gt : 100, $lt : 200 > > );
D. db.posts.find({ likes : { $gte : 100, $lt : 200 } } );

Answer: B

NEW QUESTION # 114
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":-l});
B. db.posts.createIndex({commerits.$.author":-l});
C. db.posts.createIndex({comments.$.author": {$desc:l>});

Answer: A

NEW QUESTION # 115
What tool do you use if you want to extract a CSV from mongo?

Answer:

Explanation:
mongoexport

NEW QUESTION # 116
When should we consider representing a one-to-many relationship in an embedded collection instead of separate collection?

A. When the many is not very large
B. Never
C. When the many is very large
D. Always

Answer: A

NEW QUESTION # 117
......

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