Connecting Node.js to MongoDB MCQ , MongoDB Node.js Driver Practice Questions

Direction: Choose the correct option

Which official MongoDB driver is used to connect Node.js to MongoDB?

A. mongojs

B. mongo-client

C. mongoose

D. mongodb

Direction: Choose the correct option

How do you establish a connection to MongoDB using the official Node.js driver?

A. `MongoClient.connect()` with a connection string

B. `mongodb.connect()`

C. `mongoose.connect()`

D. `new Mongo().connect()`

Direction: Choose the correct option

What is the typical connection string format for a local MongoDB instance?

A. `mongo://localhost:27017`

B. Both A and C

C. `mongodb://localhost:27017`

D. `mongodb://127.0.0.1:27017/db`

Direction: Choose the correct option

What does `MongoClient.connect()` return or accept as a callback?

A. The collection object

B. The database object directly

C. A promise (if using async/await) or a callback with error and client object

D. A boolean

Direction: Choose the correct option

After connecting with `MongoClient`, how do you access a specific database?

A. client.getDatabase('databaseName')

B. client.database('databaseName')

C. client.db('databaseName')

D. client.use('databaseName')

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