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Question 16

Which of the following aggregation commands in MongoDB does not support sharded collections?

Options:

A.

mapReduce

B.

group

C.

aggregate

D.

All of the above

Question 17

MongoDB is

Options:

A.

None of the above

B.

Object-oriented DBMS

C.

Relational DBMS

D.

Document-oriented DBMS

Question 18

‘$set' sets the value of

Options:

A.

Code block

B.

Name/value pair

C.

Key

D.

None of the above

Question 19

Consider the following document from the products collection:

What does the following query using $elemMatch return? db.products.find( { product_code: "345678" }, { variations: { $elemMatch: { size: ^L^ } } } )

Options:

A.

Returns the complete document but retrieves only the size field from the array

B.

Returns the document but with only one element in the variations array (corresponding to size L)

C.

Returns the complete document since MongoDB does not support partial array retrieval

D.

Returns the complete document but retrieves only the size field from the array and also with only one element in the variations array (corresponding to size L)

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Sure Pass Exam C100DBA PDF, Download Latest C100DBA Questions, C100DBA Questions Bank,
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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