MongoDB Practice Test 3

1. Point out the correct statement.

Applications that handle monetary data often require capturing fractional units of currency

All of the mentioned

Applications that handle temporal and spatial data often require capturing fractional units of currency

Applications that handle time data often require capturing fractional units of currency

2. Updates that include _________ of field names may result in the reordering of fields in the document.

Nesting

Renaming

Joining

None of the mentioned

3. Point out the correct statement.

All of the mentioned

If your storage system does not support snapshots, you can copy the files directly using cp, rsync, or a similar tool

To get a consistent snapshot of a sharded system, you must disable the balancer

The mechanics of snapshots depend on the underlying storage system

4. Point out the correct statement.

$like is used for regular expression pattern matches

All of the mentioned

$regex is used for regular expression pattern matches

$reg is used for regular expression pattern matches

5. ___________ is a specification for storing and retrieving files that exceed the BSON-document size limit of 16MB.

FSpec

GridFS

Grid

None of the mentioned

6. Each document in the __________ collection represents a distinct chunk of a file as represented in the GridFS store.

bson

none of the mentioned

files

chunks

7. mongodump and mongorestore can operate against a running _______ process.

mongostore

none of the mentioned

mongod

mongorestore

8. Point out the wrong statement.

If you regularly need to perform server-side arithmetic on monetary data, the exact precision model may be appropriate

If you need to query the database for exact, mathematically valid matches, use Ambiguity Precision

None of the mentioned

If you need to query the database for exact, mathematically valid matches, use Exact Precision

9. If your driver has a version number of 2.9.1, What is the major version?

None of the mentioned

10. Point out the correct statement.

Index selectors, which define what records to select for read, update, and delete operations

Query specifications, which define what fields to index

Update definitions define what fields to modify during an update

All of the mentioned