MongoDB C100DBA Exam Questions Instant Access

Question 1

You are comparing values of different BSON types in mongodb. You want to compare from lowest to highest. Which comparison order is used?

AMinKey, Null, Numbers,Symbol, String,Object,Array,BinData

BMinKey, Null, Numbers,Object,Array,BinData,Symbol, String

CObject/Array^inData/Symbol,MinKey, Null, Numbers,String

DObjec^Array^inData,Symbol, String,MinKey, Null, Numbers

Answer : A

Question 2

By default, the MongoDB cursor in mongo shell is configured to return how many documents? To get the next set of documents, which command is used?

A200, more

BNo limit, none

C20, it

D50, it

Answer : C

Question 3

Which of the following is correct about MongoDB?

AMongoDB supports geospatial indexes

BMongoDB supports some of the SQL functions

CMongoDB uses JSON format to represent documents

DMongoDB supports collection joins

Answer : A

Question 4

What does the output x of the following MongoDB aggregation query result into; db.posts.aggregate( [ { $group: { _id; "$author", x: { $sum: $likes } } } ] )

AAverage of likes on all the posts of an author, grouped by author

BNumber of posts by an author

CSum of likes on all the posts by all the authors

DSum of likes on all the posts by an author, grouped by author

Answer : D

Question 5

What is the maximum size of a MongoDB document

A16 MB

B12 MB

C2 MB

DThere is no maximum size. It depends on the RAM.

Answer : A

Question 6

In a sharded replicas set environment with multiple mongos servers, which of the following would decide the mongos failover?

Amongos

Bmongo shell

Cindividual language drivers

Dmongod

Answer : C

Question 7

Below is a sample document of "orders" collection

A$sort

Answer : A

MongoDB Certified DBA Associate C100DBA Exam Questions