WEEK-1

Introduction to Mongo DB (Week 1 Quiz) Coursera

How much will our Atlas cluster cost per month?

1. 1 USD

2. 5 USD

3. Nothing. It’s free.

4. 20 USD

5. 10 USD

How many documents were imported by our mongoimport command?

1. 44,800

2. 40,600

3. 46,000

4. 40,001

5. 46,014

What is the runtime of the first document listed in our collection?

1. 14 min

2. 103 min

3. 1 min

4. 6 min

5. 23 min

Which of the following accurately describe PyMongo?

1. A client library for connecting to MongoDB

2. A library that supports the MongoDB aggregation framework and query language

3. A programming language

4. A Python library

5. A hosting platform for MongoDB

What elements of the provided connection string do you need to change in order to successfully connect to MongoDB from Python?

1. username

2. authorization source

3. password

4. cluster name

5. database

Which of the following are true of the aggregation pipeline?

1. An individual stage within a pipeline performs many different types of tasks.

2. Aggregation pipelines are similar to Linux shell pipelines.

3. Pipelines use a MongoDB collection as input.

4. You may include a particular type of stage in an aggregation pipeline only once.

5. The task a pipeline stage performs is tunable.

What data structure is used to define expressions in the aggregation framework?

1. int

2. string

3. dictionary

4. list

5. tuple

What are the two components of a sort expression?

1. direction

2. field

3. count

4. size

5. list

1.

Question 1

What is an API?

1 point

A practice for dev-ops teams enabling developers to deliver frequent changes reliably

A framework which dictates the architecture of your program and controls the program flow

Code that works with data and provides a mechanism for software to access resources from the back-end

A version control system used to manage your code

2.

Question 2

When a user tries to login to a website, he/she gets an authentication failure error. Who do you think can fix this error? (Select all that apply)

1 point

Full-stack Developer

Front-end Developer

Back-end Developer

3.

Question 3

In addition to SQL, which tool can help you access databases?

1 point

pip

npm

ORM

CI/CD

4.

Question 4

Build automation can automate which of the following tasks? (Select all that apply)

1 point

Downloading dependencies

Packaging binary code

Compiling binary code into source code

Running tests and deployment to production systems

5.

Question 5

A user has complained that the website is readable on desktop but not on mobile. Who can help solve this problem?

1 point

Front-end Developer

 Back-end Developer

6.

Question 6

Which of the following describe a package manager? (Select all that apply)

1 point

A way to distribute your pre-packaged application(s)

Contains application files, instructions for installation, and metadata

Takes care of finding, installing, maintaining or uninstalling software packages

7.

Question 7

Which of the following adds interactivity and dynamic content to a website?

1 point

JavaScript

Git

HTML

CSS

8.

Question 8

Which of these is an open-source server side platform built on the Google Chrome JavaScript engine and uses an asynchronous single threaded architecture that allows it to serve a very large number of concurrent connections?

1 point

React JS

Flask

Node.js

Angular

9.

Question 9

Which of the following frameworks and libraries are used for front-end? (Select all that apply)

1 point

React.js

Express

Vue.js

Node.js

Angular

10.

Question 10

Which of the following is NOT a required skill for a front-end developer?

1 point

HTML

CSS

JavaScript

Java