MongoDB connection with mongodb driver in Node.js - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the MongoClient class from the mongodb package.

Node.js

const { [1] } = require('mongodb');

Drag options to blanks, or click blank then click option'

ADatabase

Bconnect

CMongoClient

DMongoDB

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'connect' instead of 'MongoClient'.

Trying to import 'MongoDB' which is not a class.

Using 'Database' which is not the correct import.

The MongoClient class is imported from the 'mongodb' package to create a client for connecting to MongoDB.

2fill in blank

medium

Complete the code to create a new MongoClient instance with the connection URI.

Node.js

const client = new MongoClient([1]);

Drag options to blanks, or click blank then click option'

A'mongodb://localhost:27017'

B'http://localhost:27017'

C'mongodb://127.0.0.1:3000'

D'ftp://localhost:27017'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'http://' instead of 'mongodb://'.

Using wrong port number.

Using 'ftp://' which is not for MongoDB.

The connection URI for MongoDB uses the 'mongodb://' protocol and the default port 27017.

3fill in blank

hard

Fix the error in the async function to connect the client.

Node.js

async function connectDB() {
  await client.[1]();
}

Drag options to blanks, or click blank then click option'

Astart

BconnectDB

CconnectClient

Dconnect

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'connectDB' which is the function name, not the method.

Using 'start' which does not exist.

Using 'connectClient' which is incorrect.

The MongoClient instance has a method named 'connect' to establish the connection.

4fill in blank

hard

Fill both blanks to get a database named 'testdb' from the client.

Node.js

const db = client.[1]([2]);

Drag options to blanks, or click blank then click option'

Adb

Bdatabase

C'testdb'

D'mydb'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'database' instead of 'db'.

Using wrong database name like 'mydb'.

Not using quotes around the database name.

The method to get a database is 'db' and the database name is passed as a string.

5fill in blank

hard

Fill all three blanks to get a collection named 'users' from the database and insert a document.

Node.js

const collection = db.[1]([2]);
await collection.[3]({ name: 'Alice', age: 25 });

Drag options to blanks, or click blank then click option'

Acollection

B'users'

CinsertOne

Dinsert

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'insert' instead of 'insertOne'.

Not using quotes around the collection name.

Using wrong method to get collection.

Use 'collection' method to get the collection, pass the collection name as a string, and use 'insertOne' to insert a single document.