HTML/CSS, React, Node.js, and MongoDB Online Test
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The HTML/CSS, React, Node.js, and MongoDB online test assesses the candidate's ability to develop applications using both front-end skills (React and HTML/CSS) and back-end skills (Node.js and MongoDB).
It's an ideal test for pre-employment screening. A good full-stack Node.js developer, who is using React for the front-end, and MongoDB as database engine, must be able to solve problems using Node.js and also to combine React and HTML/CSS to create dynamic and interactive user interfaces. Moreover, they must know how to write and analyze MongoDB queries, which are used to communicate with the database.
This online test requires candidates to solve common HTML/CSS challenges, React and Node.js coding problems, and to answer multiple-choice questions about MongoDB.
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Free Sample Questions for HTML/CSS, React, Node.js, and MongoDB Test
Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.
Avatar
7min
-
Easy
Easy
-
CODE
HTML/CSS
Borders
Element Size
Styling
Public
HTML/CSS
HTML is the standard markup language for creating web pages. It's an essential skill for anyone creating web pages of any complexity.
Borders
Borders can be applied to most HTML elements within the body. This is one of the most used element decorations.
Element Size
Setting the size of the elements on a web page is one of the basic things that any web developer or designer should know.
Styling
Styling user interfaces according to the specification is a daily routine for a front-end developer.
Public
Public questions (free account) are common interview questions. They are great for practicing, or if you want to filter candidates using the classic problems.
Every user on your website has an image avatar that is displayed when they post a comment. You want to style these images differently from other images on your site. Add a CSS class named avatar that fulfils the following requirements:
- The avatar's border is rounded, so that it appears as a circle.
- The avatar's width and height are both 150px.
- The avatar has a solid border, has a width of 2px, and be colored gray.
For example, the avatar in the template should look like:
Mail Tracker
3min
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Easy
-
MCA
MongoDB
Database Schema
New
Public
MongoDB
MongoDB is a NoSQL document database using a JSON-like structure for documents and queries.
It's main strengths lie on the flexibility of the document schemas and easy horizontal scalability. It also allows usage of JavaScript inside queries and a file storage system.
Database Schema
A database schema defines how data is stored in a database. Fields are assigned fixed data types and restrictions. Formalizing how data is stored is an early step towards building an application or service.
New
This is a new addition to our question library.
Public
Public questions (free account) are common interview questions. They are great for practicing, or if you want to filter candidates using the classic problems.
You work for a mail delivery company and the tracker system uses MongoDB with the following document schema for the "Packages" collection:
{
"_id": { "bsonType": "objectId" },
"destination": { "type": "string" },
"state": { "enum": ["preparing", "in transit", "delivered"] }
}
Select all the correct statements about the Packages collection.
(Select all acceptable answers.)
Config
3min
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Easy
Easy
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MCA
Node.js
NPM
Public
Node.js
Node.js is a cross-platform JavaScript runtime environment for developing a diverse variety of tools and applications. It is used primarily as the back end for web applications(including the MEAN stack).
NPM
npm is the default package manager for Node.js. As such, it is an important tool for every Node.js developer.
Public
Public questions (free account) are common interview questions. They are great for practicing, or if you want to filter candidates using the classic problems.
Consider the following package.json for a Node.js application:
{
"name": "skill-measure-app",
"private": true,
"version": "1.0.0",
"main": "lib/main.js",
"scripts": {
"build": "npm run cleanup & npm run test & npm run publish",
"cleanup": "rm -fr ./lib",
"test": "jest",
"publish": "npm publish lib"
},
"dependencies": {
"jest": "^23.0.1",
"custom-package": "file:../custom-package"
}
}
Select all the correct statements.
(Select all acceptable answers.)
Focusable Input
7min
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Easy
Easy
-
CODE
React
Effect Hook
React Hooks
Reference Hook
New
Public
React
React is a JavaScript library for building user interfaces. As one of the most widely used frameworks it's important for most JavaScript developers to have a working knowledge of.
Effect Hook
Using a React Effect Hook allows you to set up a subscription to DOM changes and perform side effects.
React Hooks
React Hooks allow developers to use state and other React features without writing a class. Hooks allow developers to reuse stateful logic without changing the component hierarchy.
Reference Hook
Using a React Reference Hook allows you to pass mutable values between components, which simplifies code.
New
This is a new addition to our question library.
Public
Public questions (free account) are common interview questions. They are great for practicing, or if you want to filter candidates using the classic problems.
Finish the FocusableInput component so that the input element automatically receives focus on the first render if the shouldFocus prop is true.
The component should use React Hooks.
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Premium Questions for HTML/CSS, React, Node.js, and MongoDB Test
TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.
Question Names
These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail.
Links, Fahrenheit Converter, Shopping Cart, Ad, Article Style, Baby Names, Cities, Editor, Format Table, Keywords, Label Color, Loading, Logo, Shirts, Upload, Warehouse, Widgets, Weather Data, iframe, Toggle Options Visibility, Cards Widget, Error Catcher, File Exists, Post Comment, Retry Request, Run Sequentially, Product Rating, Stream Transform, Link, Package Declaration, Add Id, Hash Bug, Game Action, Arrange Promises, Click Button, Email Input, List Wrapper, Subscription, Login Form, Product Search, Addition, Async Paragraph, Bookmark, Screen Reader, Game Offer, Bicycle Report, Curious Leaf, Gaming Console, Travel Blog, Blog, Christmas Tree, Timesheet, Email Tables, Shopping List, Data Entry, Price List, Ice Cream Flavors, TestDome Logo, Fish Movement Patterns, Tutoring Platform, Helping a Colleague, Charging Stations, Pet Form, Contact Form, Tooltip Component, Simple Calculator, Tab Strip, Email Form, Theme Context Switcher, Player Status, Reorder, Share Button, DetailsCovered Skills
Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.
HTML/CSSHTML/CSS
HTML is the standard markup language for creating web pages. It's an essential skill for anyone creating web pages of any complexity.
CSS Selectors
Selectors are a programming pattern that can be used to select an element from a container. They are primarily used in technologies such as CSS and jQuery to apply styles to groups of elements.
Styling
Styling user interfaces according to the specification is a daily routine for a front-end developer.
Node.js
Node.js is a cross-platform JavaScript runtime environment for developing a diverse variety of tools and applications. It is used primarily as the back end for web applications(including the MEAN stack).
Modules
Modules are a way to package functionality in units that can depend on other modules. Since modules are often used for code reuse and code organization, knowledge of them is important for all developers.
Events
Events are the basic building block of Node.js. As such, they are important for all Node.js programmers.
Element Spacing
Setting the margins and padding of the elements on a web page is one of the basic things that any web developer or designer should know.
Flexbox
The Flexible Box Layout Module makes it easier to design a flexible responsive layout structure.
Positioning
Dynamic positioning of user interface elements depending on resolution is more important than ever in modern applications, making this important for a front-end developer.
Fonts
Setting the font name or size is part of creating any web page.
Elements and Attributes
Defining elements and their attributes is the first process in creating an HTML page.
HTML5
HTML5 is now supported in all modern browsers, making it important for front-end developers to know how to use its features.
Language
A programmer should use a language as a tool, always taking advantage of language-specific data types and built-in functions.
Animation
Animation is the process in which images or objects are manipulated to appear as if they are moving. It's a powerful effect that is important for UI designers to understand and be able to use.
Forms
Forms provide a method of grouping inputs and collecting user data. As such, they are important for all front end developers.
Asynchronous Programming
Asynchronous programming is a programming method used to to run tasks asynchronously. Running tasks asynchronously can improve performance and allow applications to feel more responsive. As such, it's important for all programmers who need to write performant or responsive applications.
Hyperlink
Hyperlink, or simply a link, is a reference to data that the reader can follow by clicking or tapping. There's no web page without a hyperlink.
IFrame
The HTML Inline Frame element (iframe) represents a nested browsing context, embedding another HTML page into the current one. Web developers often use it to display content within other content.
React
React is a JavaScript library for building user interfaces. As one of the most widely used frameworks it's important for most JavaScript developers to have a working knowledge of.
Data Binding
Data binding is a technique for synchronizing data between a component and DOM. For this reason, it’s important for all web developers.
Components
Components are used in many frameworks and languages as the building blocks of an application.
Managing State
Knowing how to overcome statelessness, the intrinsic limitation of web programming, is a very important skill for a web developer.
React Hooks
React Hooks allow developers to use state and other React features without writing a class. Hooks allow developers to reuse stateful logic without changing the component hierarchy.
Error Boundaries
Error boundaries are React components that catch JavaScript errors anywhere in their child component tree and display a fallback UI instead of the component tree that crashed. Since they are one of the basic building blocks of error handling, they are important for all React developers.
Content Manipulation
Adding or modifying content is the most common task when developing dynamic web pages.
Event Handling
Event-based design patterns are very common in modern applications, especially in the development of user interfaces.
Async-Await
The async function declaration defines an asynchronous function, which can await a response. Using the async-await pattern allows using asynchronous code while not losing readability or maintainability.
Promise
In JavaScript, a Promise is an object representing the eventual completion or failure of an asynchronous operation. It allows associating handlers with an asynchronous action's eventual success value or failure reason. It is one of the commonly used asynchronous programming techniques in JavaScript.
JSON
JSON is an open-standard format that uses human-readable text to transmit data objects consisting of attribute-value pairs. It's the most common data format used for asynchronous browser/server communication.
Stream
A stream is a sequence of data elements made available over time. It is particularly useful for tasks that may benefit from being asynchronous, including tasks such as I/O processing or reading from a file, and as such is important for developers to understand.
NPM
npm is the default package manager for Node.js. As such, it is an important tool for every Node.js developer.
Event Loop
The event loop is what allows Node.js to perform non-blocking I/O operations — despite the fact that JavaScript is single-threaded - by offloading operations to the system kernel whenever possible.
Bug Fixing
Everyone makes mistakes. A good programmer should be able to find and fix a bug in their or someone else's code.
Event Emitter
In Node.js, all objects that emit events are instances of the EventEmitter class making it one of the most commonly used classes. These objects expose an eventEmitter.on() function that allows one or more functions to be attached to named events emitted by the object.
Exceptions
Exceptions exist in most modern programming languages, making it important for a programmer to understand them and know how to handle them.
Higher Order Components
A higher-order component (HOC) is an advanced technique in React for reusing component logic. HOCs are not part of the React API, they are a pattern that emerges from React’s compositional nature.
Conditional Rendering
Conditional rendering is a common pattern used to show UIs based on the application’s state.
State Hook
Using a React State Hook allows you to preserve state between re-renders in a manner that doesn't require render props and higher-order components patterns, which simplifies code.
Hooks
Many frameworks allow developers to add their own plugins and extensions. Hooks are the points within the framework that the developer can access to implement their own logic and designs.
Effect Hook
Using a React Effect Hook allows you to set up a subscription to DOM changes and perform side effects.
CSS Advanced
Cascading Style Sheets are the styling language of the web. Knowledge about advanced CSS features is required for seasoned front-end developers.
Element Size
Setting the size of the elements on a web page is one of the basic things that any web developer or designer should know.
Asynchronous Calls
Calling methods asynchronously is a common task for programmers.
Bookmarks
A bookmark is a hyperlink that points to a location within a document, which is defined by a name that is assigned to an element. Bookmarks are used when we need to jump to a specific location within a document.
Accessibility
Accessibility refers to the design of products, devices, services, or environments for people who experience disabilities. It's important for all designers and developers to know how to optimize for people who experience disabilities.
CSS Basics
Cascading Style Sheets are the styling language of the web. Any good front-end developer requires a knowledge of basic CSS features.
Tables
A table stores data as rows and columns. From databases to HTML layouts, as a data structure they are ubiquitous. They are an important structure for developers to understand and know how to use.
Responsive Design
Anyone who works with web should know how to properly implement responsive web design that makes web pages render well on a variety of devices and screen sizes.
UI
An understanding of user interface design is important for any good front-end developer.
Semantic Tags
Semantic HTML elements clearly describe their meaning in a human and machine readable way. They are used to improve page SEO.
Borders
Borders can be applied to most HTML elements within the body. This is one of the most used element decorations.
Inline Styles
Inline styles are styles that are applied directly on elements. This is one of the ways for applying styles and for some scenarios, such as for email, is the only supported way.
Selectors
Selectors are a programming pattern that can be used to select an element from a container. They are primarily used in technologies such as CSS and jQuery to apply styles to groups of elements.
CSS Layout
Cascading Style Sheets are the styling language of the web. For a front-end developer, a knowledge of CSS layouts is required.
MongoDB
MongoDB is a NoSQL document database using a JSON-like structure for documents and queries.
It's main strengths lie on the flexibility of the document schemas and easy horizontal scalability. It also allows usage of JavaScript inside queries and a file storage system.
Data Storage
To have persistence between executions of an application, reading and writing data from a form of storage must be used.
NoSQL
NoSQL databases don't mainly use tables to model data like relational databases. Instead opting to optimize for scenarios such as big data or graph traversal.
Sharding
Sharding is a technique used to separate the entries in a database across several servers in order to spread the load and achieve higher throughput.
Queries
Queries can be used to extract relevant information, based on any requirements.
Update
The update operation is used to modify existing entries in a database and is used with high frequency when dealing with mutable data.
Indexes
The proper implementation and use of indexes are important for improving the performance of database queries.
Performance Tuning
The performance of an application or system is important. The responsiveness and scalability of an application are all related to how performant an application is. Each algorithm and query can have a large positive or negative effect on the whole system.
Portals
Portals are a first-class way to render children into a DOM node that exists outside the DOM hierarchy of the parent component. As such, they are a very convenient tool for all developers who need to interact with a virtual DOM.
Reducer Hook
Using a React Reducer Hook allows you to pass callbacks with values between components, which simplifies code by removing the need to pass callbacks through every level of a component tree.
Context
React Context provides a way to pass data without using props through every level of the tree.
Recommended Job Roles
These are the job roles that we recommend for the HTML/CSS, React, Node.js, and MongoDB online test.
Full-Stack Developer
JavaScript Developer
MongoDB Developer
Node.js Developer
React Developer
Web Developer
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