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NEW QUESTION 36

Which of the following operations can be used to access the logs? (Mongo shell)

  • A. Running db.getLogComponents() from the Mongo shell.
  • B. Running db.adminCommand({ "getLog": "global" }) from the Mongo shell.
  • C. Running db.getLog() from the Mongo shell.

Answer: B

Explanation:

https://docs.mongodb.com/manual/reference/method/db.adminCommand/

NEW QUESTION 37

Suppose you have a books collection with title field. Which of the following queries will return all books with a title ending in 'ian'?

  • A. db.movies.find( { title: { $text: /.*ian$/ } } )
  • B. db.movies.find( { title: { $regex: /.*ian$/ } } )
  • C. db.movies.find( { title: { $regex: /.*ian/ } } )
  • D. db.movies.find( { title: { $regex: /ian/ } } )

Answer: B

Explanation:

https://docs.mongodb.com/manual/reference/operator/query/regex/

NEW QUESTION 38

Suppose you are connected to mongod instance that is already running on port 27000 as admin user. You have to create a new user for an application that has the readWrite role. Use the db.createUser() command to create a user for data analysis. The requirements for this user are: -> role: read on esmartdata database -> username: dataScientist -> password: ds123sci456 Which command should you use?

  • A. db.createUser({ user: 'dataScientist', pwd: 'ds123sci456', roles: [{role: 'read', db: 'esmartdata'}] })
  • B. db.createUser({ user: 'dataScientist', pwd: 'ds123sci456', roles: [{role: 'r', db: 'esmartdata'}] })
  • C. db.createUser({ user: 'dataScientist', pwd: 'ds123sci456', roles: [{role: 'read', db: ''}] })
  • D. db.createUser({ user: 'dataScientist', pwd: 'ds123sci456', roles: [{role: 'write', db: 'esmartdata'}] })

Answer: A

Explanation:

https://docs.mongodb.com/manual/reference/method/db.createUser/

NEW QUESTION 39

Can you perform the following operation?

db.users.insertOne({})

  • A. Yes, it will only insert a document without any fields.
  • B. Yes, it will only insert a document with an _id field (auto-generated).
  • C. No, it will throw an error.

Answer: B

NEW QUESTION 40

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