Study MongoDB C100DBA Test | C100DBA Cert Guide

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To pass the C100DBA exam, candidates need to have a deep understanding of MongoDB's architecture, replication, sharding, and backup and recovery processes. Additionally, candidates need to know how to manage users and roles, configure security, and troubleshoot issues related to MongoDB. C100DBA exam also covers topics such as indexing, performance tuning, and monitoring. MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) certification helps candidates demonstrate their expertise in MongoDB database administration and provides them with recognition and credibility in the industry.

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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q59-Q64):

NEW QUESTION # 59
Dada una coleccion, cuales devuelve con la siguiente query db.coleccion.find({nombre:"ruben",apellido:"gomez"},{nombre:l,apellido:l,aficion:l});

A. { "_id" : Objectld("580a42acdfblb5al7427d301"), "nombre" : "Luis", "apellido" : "gomez", "aficion" : u "flipar" }
B. { "_id" : Objectld("580a42acdfblb5al7427d301"), "nombre" : "ruben", "apellido" : "Pablo" , "aficion" : u "flipar"}
C. { "_id" : Objectld("580a42acdfblb5al7427d301"), "nombre" : "ruben", "apellido" : "gomez" >
D. { "-id" : Objectld("580a42b5dfblb5al7427d302"), "nombre" : "ruben", "apellido" : "gomez", "aficion" : v u "flipar" }

Answer: C,D

NEW QUESTION # 60
Consider that the posts collection contains an array called ratings which contains ratings given to the post by various users in the following format:

Which of the following query will return all the documents where the ratings array contains elements that in some combination satisfy the query conditions?

A. db.inventory.find( { ratings: { ratings.$: { $gt: 5, $lt: 9 } } } )
B. db.inventory.find( { ratings: { $elemMatch: { $gt: 3, $lt: 6 }
C. db.inventory.find( { ratings: { $elemMatch: { $gte: 3, $lte: 6 } } } )
D. db.inventory.find( { ratings: { ratings: { $gt: 5, $lt: 9 } } } )

Answer: D

NEW QUESTION # 61
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. db.posts.find({author:"Tom"}.limit($slice:{tags:2})
B. db.posts.find({author:"Tom">,{tags:{$slice:2})
C. 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.
D. db.posts.find({author:"Tom"}.limit({tags:2})

Answer: B

NEW QUESTION # 62
Write the command(s) are correct to enable sharding on a database "testdb" and shard a collection "testCollection" with _id as shard key.

Answer:

Explanation:
sh.enableSharding("testdb") & sh.shardCollection("testdb.testCollection", {_id : 1 }, true )

NEW QUESTION # 63
What is the maximum size of a MongoDB document

A. There is no maximum size. It depends on the RAM.
B. 16 MB
C. 12 MB
D. 2 MB

Answer: B

NEW QUESTION # 64
......

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