Free Access MongoDB.C100DBA.v2022-08-13.q44 Practice Test (Page 2)

What is the equivalent command in MongoDB for the following SQL query?
SELECT * FROM posts WHERE author like "%john%"

A.db.posts.find( { author: {$like: /John/} } )

B.db.posts.find( { author: /John/ } )

C.db.posts.find( { author: /AjohnA/ > )

D.db.posts.find( { $like: {author: /John/} } )

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?

A.20, it

B.50, it

C.No limit, none

D.200, more

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

A.individual language drivers

B.mongod

C.mongos

D.mongo shell

To add a new user and enable authentication in MongoDB, which of the following steps need be executed?

A.update users collection and run db.enableAuthenticationQ

B.update users collection and restart mongodb with -auth option

C.All of the above

D.update users collection and restart mongodb

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

A.All of the above

B.Issuing a query

C.Map-reduce

D.Inserting data

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