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

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Showing 7–9 of 10 questions

Question 7

Suposse tou have the following collection with only 2 documents:

If you run an aggregation query and use { $unwind: "$traits" } as the first stage, how many documents will be passed to the next stage of the aggregation pipeline?

Select an option, then click Submit answer.

  • ○

    3

  • ○

    5

  • ○

    4

  • ○

    2

  • ○

    1


Question 8

You have a replicated cluster with 1 primary, 3 secondary, 1 arbiter. One of the secondary is hidden. What is the replication factor of this replicated cluster?

Select an option, then click Submit answer.

  • ○

    7

  • ○

    03

  • ○

    04

  • ○

    06


Question 9

Which of the following aggregation commands in MongoDB does not support sharded collections?

Select an option, then click Submit answer.

  • ○

    mapReduce

  • ○

    group

  • ○

    aggregate

  • ○

    All of the above