Sorting and Limiting Data in MongoDB: Intermediate-Level Quiz

Sorting and Limiting Data in MongoDB Quiz

This quiz will test your understanding of MongoDB's sorting, limiting, and skipping features, helping you control query results for efficient data retrieval. Get ready to dive into key methods like sort(), limit(), and skip(), and learn how to organize query results effectively. Good luck!

1 / 20

In MongoDB, you can sort query results by multiple fields by passing multiple key-value pairs to the sort() method.

True

False

2 / 20

The sort() method in MongoDB can accept an array as a parameter for sorting multiple fields. True or False?

True

False

3 / 20

If both skip() and limit() are applied to a query, the skip() the function is processed before limit() in MongoDB. True or False?

True

False

4 / 20

If you want to retrieve documents sorted by name in ascending order and by age in descending order, which sort() format is correct?

db.collection.find().sort({name: -1, age: -1})

db.collection.find().sort({name: 1, age: -1})

db.collection.find().sort({name: 1, age: 1})

db.collection.find().sort({name: -1, age: 1})

5 / 20

You can use the sort() method to arrange results by multiple fields, and MongoDB will use left-to-right precedence for the order specified. True or False?

True

False

6 / 20

In MongoDB, what happens if you apply limit(0) to a query?

No documents are returned

Only the first document is returned

An error is generated

The entire dataset is returned

7 / 20

Which statement best describes the purpose of the limit() method in MongoDB?

Limits the data storage capacity

Limits the number of queries executed

Limits the number of fields returned per document

Limits the number of documents returned in the result set

8 / 20

Which MongoDB method allows you to skip a specified number of documents in the query result?

remove()

exclude()

skip()

omit()

9 / 20

In MongoDB, which of the following commands limits the number of documents returned in a query result?

maxDocs()

restrict()

limit()

count()

10 / 20

The sort() and limit() methods can be combined in MongoDB to refine query results. True or False?

True

False

11 / 20

Which of the following MongoDB queries sorts documents by the age field in ascending order and limits the result to 5 documents?

db.collection.find().limit(5).sort({age: 1})

db.collection.find().sort({age: 1}).limit(5)

db.collection.find({age: 1}).limit(5).sort()

db.collection.find().sort({age: -1}).limit(5)

12 / 20

When using sort() with an index, how does MongoDB optimize sorting?

It temporarily duplicates the collection for faster sorting

It reorders documents in the collection

It uses sorting algorithms at the server level

It leverages the index to retrieve documents in sorted order

13 / 20

Which value is used to sort documents in descending order using the sort() method?

-1

14 / 20

To retrieve the 5th through 10th documents from a sorted list, which combination of methods should you use?

sort().skip(4).limit(6)

sort().skip(4).limit(5)

sort().limit(5).skip(10)

sort().skip(10).limit(5)

15 / 20

If a collection is sorted by created_at in ascending order and limited to 3 results, which documents are returned?

Random documents

The most recently created documents

The documents with the smallest IDs

The first three documents based on created_at

16 / 20

When a query with limit() and sort() is executed, MongoDB applies the limit() clause before sorting the documents. True or False?

True

False

17 / 20

To retrieve documents in descending order by rating and skip the first 2 results, which query is correct?

db.collection.find().sort({rating: 1}).skip(2)

db.collection.find().limit(2).sort({rating: -1})

db.collection.find().skip(2).sort({rating: 1})

db.collection.find().sort({rating: -1}).skip(2)

18 / 20

When using sort() and skip() together, which operation is executed first in MongoDB?

It depends on the document size

skip()

They are executed simultaneously

sort()

19 / 20

When using both sort() and limit() in a MongoDB query, which operation is applied first?

Depends on the field type

sort()

limit()

Depends on the database configuration

20 / 20

Which MongoDB method would you use to retrieve documents starting from the 6th result in a query?

offset(6)

skip(5)

limit(6)

start(6)

Your score is

The average score is 0%

Sorting and Limiting Data in MongoDB is crucial for database developers and administrators. This is crucial, especially if you want to optimize data retrieval, improve query performance, and effectively manage large volumes of data in MongoDB.

This quiz is for intermediate MongoDB users looking to test their skills in efficiently retrieving, sorting, and limiting data within MongoDB to optimize query performance, especially in production environments handling large datasets.

Best of luck!