MongoDB Data Types: Beginner-Level Quiz

MongoDB Data Types Quiz

This quiz tests your understanding of the various data types supported by MongoDB, including strings, numbers, arrays, and embedded documents. A solid grasp of data types is essential for effective data storage and retrieval in MongoDB.

1 / 20

The ___ field contains the sequence number of the chunk.

field

array

2 / 20

Which of the following statements is correct?

MongoDB stores documents on disk in the BSON serialization format

MongoDB stores documents on RAM in the JSON serialization format

MongoDB stores chunks on disk in the XML serialization format

None of the above

3 / 20

In the mongo shell, you can access the creation time of the ObjectId, using the ______ method.

Timestamp()

getTime()

getTimestamp()

None of the above

4 / 20

Which of the following query is used to generate a new ObjectId, use the ObjectId() constructor with no argument?

x = ObjectId()

x = ObjectIdAdd()

x = addObjectId()

None of the above

5 / 20

Which of the following data type is depreciated?

Undefined

Double

String

Object

6 / 20

The __________ JavaScript shell and the MongoDB language drivers translate between BSON and the language-specific document representation.

mongo

mongod

iscript

None of the above

7 / 20

Which of the following statements is correct?

You cannot perform range queries on files stored through GridFS

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

GridFS uses two collections to store files

All of the above

8 / 20

MongoDB documents are composed of field-and-value pairs and have the following structure?

field1: value1;

field1: value1

field1:; value1

All of the above

9 / 20

GridFS uses a _________ index on the chunks collection for the files_id and n fields.

unique

non unique

single

married

10 / 20

Which of the following statements is correct?

ObjectIds values consists of 18-byte

ObjectIds are small, likely unique, fast to generate, and ordered

ObjectIds are large, likely unique, and ordered

MongoDB favours XML format more than JSON

11 / 20

BSON is a binary representation of ________ documents.

JSON

BSON

XML

JScript

12 / 20

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

Files

Chunks

BSON

JSON

13 / 20

Which of the following statements is not correct?

No MongoDB process will ever add duplicate fields to an existing user document

The maximum BSON document size is 16 megabytes

Some documents created by internal MongoDB processes may have duplicate fields

None of the above

14 / 20

Object_Id is similar to _________ key in Relational Databases.

primary

secondary

composite

permanent

15 / 20

Which of the following statements is not correct?

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

The BSON timestamp type is for internal MongoDB use

BSON Date is a 32-bit integer that represents the number of milliseconds

All of the above

16 / 20

The GridFS index allows efficient retrieval of __________ using the files_id and n values.

Files

Chunks

BSON

JSON

17 / 20

Which of the field is reserved for use as a primary key?

_uuid

_uid

_id

All of the mentioned

18 / 20

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

GridFS

FSpec

Grid

None of the above

19 / 20

There are _________ byte counter in BSON, starting with a random value.

20 / 20

Which of the following statements is not correct?

The field names cannot contain the null character

The field names cannot start with the dollar sign ($) character

The field names cannot contain the dot (.) character

None of the above

Your score is

The average score is 0%

MongoDB Data Types covers the different data types it can store within its documents. This includes common types like strings, numbers, booleans, arrays, and objects, as well as more advanced types like ObjectId, Date, Binary Data, and Null.

Understanding these data types is crucial for properly designing schemas, querying data, and ensuring data integrity within MongoDB collections.

Best of luck!