C100DBA by MongoDB Actual Free Exam Q&As

Question 1

Which type of indexes does MongoDB support?

A. Geospatial Indexes B. All of the above C. Compound Indexes D. Multikey Indexes

Discussion 0

Correct Answer: B Vote an answer

Question 2

Which option should be used to update all the documents with the specified condition in the MongoDB query?

A. specify {multi : true} as the third parameter of update command B. specify {all: true} as the third parameter of update command C. specify {updateAII: true} as the third parameter of update command D. updateAII instead of update

Discussion 0

Correct Answer: A Vote an answer

Question 3

What is the output of the following program?

A. 60 s B. 100 s C. 1s D. 100 ms

Discussion 0

Correct Answer: A Vote an answer

Question 4

'mongoimport' command is used for

A. None of the above B. Multiple command insertion C. Multiple command import D. Batch data insertion

Discussion 0

Correct Answer: D Vote an answer

Question 5

Which of the following commands can cause the database to be locked?

A. Map-reduce B. All of the above C. Issuing a query D. Inserting data

Discussion 0

Correct Answer: B Vote an answer

Question 6

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

A. mongo shell B. individual language drivers C. mongod D. mongos

Discussion 0

Correct Answer: B Vote an answer

Question 7

Addding the index {a:l} can potentially decrease the speed of which of the following operations? Check all that apply.

A. db.collection.update({b:456>, {$inc: {a:l> }) B. db.collection.insert( { a:341}) C. db.collection.find( {a : 232} )

Discussion 0

Correct Answer: A,B Vote an answer

Question 8

Which mongodb tool is used to report details on number of database operations in MongoDB?

A. mongotop B. mongostat C. mongorestore D. mongodump

Discussion 0

Correct Answer: B Vote an answer

Question 9

What is the maximum size of a MongoDB document

A. There is no maximum size. It depends on the RAM. B. 16 MB C. 12 MB D. 2 MB

Discussion 0

Correct Answer: B Vote an answer

Question 10

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

A. MinKey, Null, Numbers,Object,Array,BinData,Symbol, String B. MinKey, Null, Numbers,Symbol, String,Object,Array,BinData C. Object/Array^inData/Symbol,MinKey, Null, Numbers,String D. Objec^Array^inData,Symbol, String,MinKey, Null, Numbers

Discussion 0

Correct Answer: B Vote an answer

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