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MongoDB C100DBA - MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)

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Total 132 questions

Which type of indexes does MongoDB support?

A.

All of the above

B.

Compound Indexes

C.

Multikey Indexes

D.

Geospatial Indexes

Which of the following are common uses of the mongo shell? Check all that apply

A.

Perform queries against MongoDB collections

B.

Perform administrative tasks

C.

Use as a JavaScript framework for your production system

In a replica set, a_________number of members ensures that the replica set is always able to select a primary.

A.

Even

B.

Odd

C.

2

D.

Depends on the application architecture

If you have created a compound index on (A,B, C) which of the following access pattern will not be able to utilize the index?

A.

A, B, C

B.

A

C.

B, C

D.

A, B

Which of the following operators is used to updated a document partially?

A.

$set

B.

$update

C.

$project

D.

$modify

Dada una coleccion, cuales devuelve con la siguiente query db.coleccion.find({nombre:"ruben",apellido:"gomez"},{nombre:l,apellido:l,aficion:l});

A.

{ "-id" : Objectld("580a42b5dfblb5al7427d302"), "nombre" : "ruben", "apellido" : "gomez", "aficion" : v u "flipar" }

B.

{ "_id" : Objectld("580a42acdfblb5al7427d301"), "nombre" : "Luis", "apellido" : "gomez", "aficion" : u "flipar" }

C.

{ "_id" : Objectld("580a42acdfblb5al7427d301"), "nombre" : "ruben", "apellido" : "Pablo" , "aficion" : u "flipar"}

D.

{ "_id" : Objectld("580a42acdfblb5al7427d301"), "nombre" : "ruben", "apellido" : "gomez" >

What is the use of mongodump and mongorestore tools?

A.

backup mongodb deployment

B.

audit mongodb deployment

C.

performance tune mongodb deployment

D.

replicate mongodb deployments

If the value of totalKeysExamined is 30000 and the value of totalDocsExamined is 0, which of the following option is correct?

A.

None of the above

B.

The query used an index to fetch the results

C.

The query returned 0 documents

D.

The query returned 30000 documents after scanning the documents

What tool would you use if you want to save a gif file in mongo?

Which of the following node is used during election in a replication cluster?

A.

primary

B.

arbiter

C.

hidden

D.

secondary