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Question 12

Which of the following needs to be performed prior to initiate backup on a sharded cluster?

Options:

A.

db.stopBalancer( )

B.

sh.stopServer( )

C.

db.stopServer( )

D.

sh.stopBalancer( )

Question 13

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 > > ] > )

Options:

A.

{''__id" :3, "a": 4, "c" :0, "b" :14}

B.

{''_Jd" :7, "a": 8, "c" :1, "b" :7}

C.

{".Jd" :6, "a": 1, "c" :1, "b" :5}

D.

{ ''\Jd" :9, "a": 17, "c": 1, "b": 1}

E.

{ \Jd" :10,"a": 3, "c": 1, "b": 1}

F.

{".Jd" :: 2, "a": 2, "c" :: 0, "b": 1}

G.

{".Jd" :: 4, "a": 5, "c" :: 0, "b": 17}

Question 14

In a collection that contains 100 post documents, what does the following command do? db. posts. find().skip(5).limit(5)

Options:

A.

Skip and limit nullify each other. Hence returning the first five documents.

B.

Skips the first five documents and returns the next five

C.

Limits the first five documents and then return them in reverse order

D.

Skips the first five documents and returns the sixth document five times

Question 15

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

Options:

A.

mongorestore

B.

mongostat

C.

mongodump

D.

mongotop

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Exam Code: C100DBA
Exam Name: MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)
Last Update: Nov 22, 2024
Questions: 132
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