MongoDB Online Test

1. plan

2. shape

3. stats

4. all of the mentioned

Correct Answer : B

1. show collection

2. show collections

3. show collect

4. none of the mentioned

Correct Answer : B

1. $unwindelem

2. $unwind

3. $unwin

4. None of the mentioned

Correct Answer : C

1. MongoDB is classified as a NoSQL database

2. MongoDB favours XML format more than JSON

3. MongoDB is column oriented database store

4. All of the mentioned

Correct Answer : A

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

Correct Answer : C

1. $setcon

2. $group

3. $match

4. None of the mentioned

Correct Answer : C

1. $match

2. $project

3. $projectmatch

4. All of the mentioned

Correct Answer : B

1. 2

2. 3

3. 4

4. 5

Correct Answer : B

1. mongod

2. mongos

3. mongo

4. mongoc

Correct Answer : A

1. mongo.js

2. mongoc.js

3. mongorc.js

4. all of the mentioned

Correct Answer : C

1. mongoshell

2. mongodump

3. mongolocaldump

4. none of the mentioned

Correct Answer : B

1. mongo

2. master

3. test

4. primary

Correct Answer : C

1. jsMode

2. scope

3. finalize

4. min

Correct Answer : A

1. Javascript

2. C

3. C++

4. All of the mentioned

Correct Answer : D

1. $match moves before $sort

2. $sort moves before $match

3. MongoDB does not do any movements by default and will use the order provided

4. Providing these parameters in any order does not impact the performance

Correct Answer : A

1. 1

2. 2

3. 3

4. 4

Correct Answer : C

1. $setcon

2. $group

3. $match

4. None of the mentioned

Correct Answer : B

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

Correct Answer : A

1. commitIntervMs

2. commitInterval

3. commitIntervalMs

4. all of the mentioned

Correct Answer : C

1. $catch

2. $match

3. $batch

4. All of the mentioned

Correct Answer : B

1. finalize

2. filter

3. procedure

4. none of the mentioned

Correct Answer : A

1. while (var i = 1; i <= 25; i++) 
   {
        db.testData.insert( { x : i } )
   }

    

2. for (var i = 1; i <= 25; i++) 
   {
      db.testData.insert( { x : i } )
   }

    

3. for (var i = 1; i <= 25; i++)
   {
      db.testData.inserts( { x : i } )
   }

    

4. None of the mentioned

Correct Answer : B

1. graph

2. key value

3. document

4. all of the mentioned

Correct Answer : C

1. map

2. reduce

3. mapper

4. all of the mentioned

Correct Answer : A

1. vertical

2. sharded

3. horizontal

4. none of the mentioned

Correct Answer : B

1. selection

2. projection

3. union

4. none of the mentioned

Correct Answer : B

1. read

2. write

3. update

4. delete

Correct Answer : A

1. finally

2. final

3. static

4. none of the mentioned

Correct Answer : A

1. UPDATE

2. OP_UPDATE

3. OP_UPDATES

4. All of the mentioned

Correct Answer : B

1. Timeout

2. noTimeout

3. Time

4. None of the mentioned

Correct Answer : B