The mongo shell and the drivers provide several cursor methods that call on the cursor returned by the _______ method to modify its behavior

1.  cursor()

2.  find()

3.  findc()

4.  none of the mentioned

View Answer  
4
Correct Answer :

find()


Explanation :
No Explanation available for this question

Which of the following method is used to query documents in collections

1.  find

2.  move

3.  shell

4.  replace

View Answer  
4
Correct Answer :

find


Explanation :
No Explanation available for this question

Command to check existence of collection is _____________

1.  show collection

2.  show collections

3.  show collect

4.  none of the mentioned

View Answer  
4
Correct Answer :

show collections


Explanation :
No Explanation available for this question

__________ returns the JavaScript representation in the form of a string literal

1.  toStringJava()

2.  toString()

3.  String()

4.  none of the mentioned

View Answer  
4
Correct Answer :

toString()


Explanation :
No Explanation available for this question

Syntax for specifying an initial batch size for the cursor is ________________

1.  cursor: { batchSize: }

2.  cursor: { batchSize: }

3.  cur: { batchSize: }

4.  none of the mentioned

View Answer  
4
Correct Answer :

cursor: { batchSize: <int> }


Explanation :
No Explanation available for this question

MongoDB applies the _____ phase to each input document in mapreduce.

1.  map

2.  reduce

3.  mapper

4.  all of the mentioned

View Answer  
4
Correct Answer :

map


Explanation :
No Explanation available for this question

You can only use jsMode for result sets with fewer than 500,000 distinct key arguments to the mapper’s _______ function

1.  emit()

2.  emitter()

3.  emitted()

4.  none of the mentioned

View Answer  
4
Correct Answer :

emit()


Explanation :
No Explanation available for this question

Production sharded clusters have exactly ______ config servers

1.  1

2.  2

3.  3

4.  4

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

____________ works similar to HAVING clause in SQL

1.  $setcon

2.  $group

3.  $match

4.  None of the mentioned

View Answer  
4
Correct Answer :

$match


Explanation :
No Explanation available for this question

_______ groups documents by some specified expression and outputs to the next stage a document for each distinct grouping

1.  $setcon

2.  $group

3.  $match

4.  None of the mentioned

View Answer  
4
Correct Answer :

$group


Explanation :
No Explanation available for this question
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