MongoDB Questions and Answers – MongoDB documents – 2

This set of MongoDB Test focuses on “MongoDB Documents – 2”.

1. Which of the following data structures are documents in MongoDB?
a) All database records
b) Query selectors
c) Update definitions
d) All of the mentioned
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2. Point out the correct statement.
a) Update definitions define what fields to modify during an update
b) Query specifications, which define what fields to index
c) Index selectors, which define what records to select for read, update, and delete operations
d) All of the mentioned
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3. An application communicates with MongoDB by way of a client library, called _____________
a) Driver
b) Parent
c) Rank
d) None of the mentioned
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4. User-defined indexes on multiple fields is called ___________
a) composite index
b) secondary index
c) compound index
d) none of the mentioned
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5. If your driver has a version number of 2.9.1, What is the major version?
a) 1
b) 2
c) 9
d) None of the mentioned
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6. Updates that include _________ of field names may result in the reordering of fields in the document.
a) Renaming
b) Joining
c) Nesting
d) None of the mentioned
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7. The $rename operator logically performs a _______ of both the old name and the new name.
a) $unset
b) $set
c) $Nested
d) None of the mentioned
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Here’s the list of Best Books in MongoDB.