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Guide for C100DBA: MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)

Quiz C100DBA: MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)

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/ 10

Quiz

1/10
What does the following aggregate query perform?

Certification Exam C100DBA: MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) MongoDB MongoDB-C100DBA 1-2512520379
Select the answer
1 correct answer
A.
Fetches the posts with likes between 100 and 200 and sets their _id as null
B.
Groups the posts by number of likes (101, 102, 103.) by adding 1 every time
C.
Calculates the number of posts with likes between 100 and 200
D.
Fetches the posts with likes between 100 and 200, sets the _id of the first document as null and then increments it 1 every time

Quiz

2/10
Which of the following commands finds all the documents in the posts collection with post
timestamp field as null?
Select the answer
1 correct answer
A.
db.posts.find( { post_timestamp: { $fieldtype: null } } )
B.
db.posts.find( { post_timestamp: { $type: null } } )
C.
db.posts.find( { post_timestamp : { $type; 10 > > )
D.
db.posts.find( { post_timestamp: { $fieldtype: 10 } } )

Quiz

3/10
What is the first task that a secondary would perform on being prompted by another secondary for
an election?
Select the answer
1 correct answer
A.
Start the election process for primary
B.
Vote for the first secondary so that it would become the next primary
C.
Vote for itself and then call for election
D.
Connect to primary to confirm its availability

Quiz

4/10
Aggregation Pipelines have a limit of:
Select the answer
1 correct answer
A.
No limit on document and 100 MB RAM
B.
2 MB document and 100 MB RAM
C.
16 MB document and 100 MB RAM

Quiz

5/10
Which option should be used to update all the documents with the specified condition in the
MongoDB query?
Select the answer
1 correct answer
A.
specify {all: true} as the third parameter of update command
B.
updateAII instead of update
C.
specify {updateAII: true} as the third parameter of update command
D.
specify {multi : true} as the third parameter of update command

Quiz

6/10
Which mongodb tools allow us to work with our data in a human readable format?
Select the answer
2 correct answers
A.
mongodump
B.
mongostat
C.
mongoimport
D.
mongoexport

Quiz

7/10
In which of the following scenarios is sharding not the correct option. Select all that apply.
Select the answer
2 correct answers
A.
The write operations on the collection are low
B.
The write operations on the collection are very high
C.
The working set in the collection is expected to grow very large in size
D.
The collection is a read intensive collection with less working set

Quiz

8/10
In a sharded cluster, from which node does one stop the balancer process before initiating backup?
Select the answer
1 correct answer
A.
Any node
B.
replicaset primary node
C.
config server node
D.
mongos node

Quiz

9/10
Which command is used to determine storage capacity of specific database?
Select the answer
1 correct answer
A.
mongotop
B.
dbstats
C.
mongostat
D.
constats

Quiz

10/10
What is the maximum size of a MongoDB document
Select the answer
1 correct answer
A.
16 MB
B.
12 MB
C.
2 MB
D.
There is no maximum size. It depends on the RAM.
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  • Quiz name:C100DBA: MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)
  • Total number of questions:132
  • Number of questions for the test:50
  • Pass score:80%

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