1.  jsMode

2.  scope

3.  finalize

4.  min

4
Correct Answer :

jsMode


Explanation :
No Explanation available for this question

1.  $unwindelem

2.  $unwind

3.  $unwin

4.  None of the mentioned

4
Correct Answer :

$unwin


Explanation :
No Explanation available for this question

1.  Variables can hold any BSON type data

2.  Aggregation expressions can use both user-defined and system variables

3.  To access the value of the variable, use a string with the variable name prefixed with double dollar signs ($$)

4.  None of the mentioned

4
Correct Answer :

To access the value of the variable, use a string with the variable name prefixed with double dollar signs ($$)


Explanation :
No Explanation available for this question

1.  Aggregation pipeline have some limitations on value types and result size

2.  The aggregation pipeline is a framework for data aggregation modeled on the concept of data processing pipelines

3.  Documents enter a multi-stage pipeline that transforms the documents into an aggregated results

4.  All of the mentioned

4
Correct Answer :

All of the mentioned


Explanation :
No Explanation available for this question

1.  mongo

2.  master

3.  test

4.  primary

4
Correct Answer :

test


Explanation :
No Explanation available for this question

1.  mongo.js

2.  mongoc.js

3.  mongorc.js

4.  all of the mentioned

4
Correct Answer :

mongorc.js


Explanation :
No Explanation available for this question

1.  Queries specify criteria, or conditions, that identify the documents that MongoDB returns to the clients

2.  Write operations, or queries, retrieve data stored in the database

3.  The selection limits the amount of data that MongoDB returns to the client over the network

4.  All of the mentioned

4
Correct Answer :

Queries specify criteria, or conditions, that identify the documents that MongoDB returns to the clients


Explanation :
No Explanation available for this question

1.  $match

2.  $project

3.  $projectmatch

4.  All of the mentioned

4
Correct Answer :

$project


Explanation :
No Explanation available for this question

1.  findOne()

2.  findOne1()

3.  selectOne()

4.  all of the mentioned

4
Correct Answer :

findOne()


Explanation :
No Explanation available for this question

1.  read

2.  write

3.  update

4.  delete

4
Correct Answer :

read


Explanation :
No Explanation available for this question

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