HTML/CSS, JavaScript, C#, and SQL Online Test

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The HTML/CSS, JavaScript, C#, and SQL online test assesses candidates' knowledge across the whole Web stack from HTML, CSS, and JavaScript on the Web front-end over C# on the back-end to SQL for data access.

It's an ideal test for pre-employment screening. A good full stack developer C# needs to be able to use a wide range of technologies.

This online test requires candidates to solve coding problems and find and fix bugs in multiple technologies.

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Free Sample Questions for HTML/CSS, JavaScript, C#, and SQL Test

Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.



HTML/CSS Borders Element Size Styling Public

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:

  1. The avatar's border is rounded, so that it appears as a circle.
  2. The avatar's width and height are both 150px.
  3. 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:

Cat avatar

Alert Service


C# Interfaces Inversion of Control Refactoring Public

Refactor the AlertService and AlertDAO classes:

  • Create a new interface, named IAlertDAO, that contains the same methods as AlertDAO.
  • AlertDAO should implement the IAlertDAO interface.
  • AlertService should have a constructor that accepts IAlertDAO.
  • The RaiseAlert and GetAlertTime methods should use the object passed through the constructor.



SQL Aggregation Select Public

Given the following data definition, write a query that returns the number of students whose first name is John. String comparisons should be case sensitive.

TABLE students
   firstName VARCHAR(30) NOT NULL,
   lastName VARCHAR(30) NOT NULL
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Premium Questions for HTML/CSS, JavaScript, C#, and SQL 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.

Filter, Driver Exam, Positive Numbers, Links, Double, Read First Line, Truthy Expressions, Roads, Document Store, New Folder, Max Sum, Log Patch, Log Patch, Shipping, Loading Bar, Read Write Execute, Procedural Generator, Segment, Segment, Hobbies, A Tag, Ad, Article Style, ATM Locations, Authors, Autocomplete, Baby Names, Ban Users, Bank Branches, Chain Link, Cheapest Product, Christmas Tree, Cities, Classroom, Countries, Developers, Disposable Wrapper, Document Counter, Editor, Employee Manager, Veterinarian, Eye of the Storm, Format Table, Hide Button, Hobbies, Hospital Patients, Index Performance, Menu Items, Merge Stock Index, Movies, Movies Live, Projects, Rectangles, Restaurant Menu, Retirees, Sales, SMS Messages, Tasks, Youngest Child, Keywords, Label Color, Loading, Logo, Node, Paragraph, Paragraph, Platformer, Product Refactoring, Products, Row Appender, Scale Font Size, Shirts, Snapshot, Snapshot, Sort Params, Timesheet, Unique Numbers, Upload, Username, Username, Vectors, Vectors, Warehouse, Weighted Average, Widgets, Window Manager, Language Teacher, Delete Orders, Timer, Book Sale, Friend, Screen, Email Tables, Average Salary, Auto Show, Poll, Shelf Test, Array Search, Department Report, iframe, Post Comment, Cards, Validation, Table of Names, Stories, Prefix, Student Rankings, Student Max Score, Adder, Data Entry, Moving Total, Shining Star, Car Rental, Paper Strip, Max Sum, Reorder, Ingredients, Crop Ratio, Launch Time, Bicycle, Product Rating, Function Wrapper, Link, Users and Accounts, Matching Clothes, Agents, River Discharge, Nullable Employee, Patient Class, Kilometer Converter, Stack to List, Internal Nodes, Fire Dragon, Log Parser, Log Parser, Ingredient Tuple, Animal Hierarchy, Height, Unique Numbers, Chinese Box, Manager Sales, Load URL, Photon Frequency, String Occurrence, Price List, Ice Cream Flavors, Addition, Movie Genres, Student Activities, Worker, Welfare Organization, Date Transform, Date Transform, Transactions, Racer, Trading Data Paging, Unique Product, Unique Product, Color Codes, Memory Game, Flight Connections, Tax Calculator, Special Actions, XML Navigation, Bookmark, TestDome Logo, Screen Reader, Share Button, Game Offer, Bicycle Report, Curious Leaf, Gaming Console, Travel Blog, Confirm, Blog, Wheel Defects
Covered 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.

JavaScript Arrays C# Exceptions Closures HTML/CSS CSS Selectors Styling DOM Manipulation Event Handling Language SQL Conditions Views Bug Fixing Strings Algorithmic Thinking Monkey Patching Extension Methods Arithmetic HTML5 Random Iteration Attribute Manipulation Element Spacing Constraints Create Table Database Schema Select Create Index Performance Tuning Flexbox Positioning Alter Table Linked List Aggregation Subqueries Fonts Accessibility Levels Properties Ordering Destructors Memory Management OOP Refactoring Elements and Attributes Left Join Queue Asynchronous Calls Dictionary Lists Indexes Union Group by Update Insert Joins Animation Recursion Tree Regex Data Structures JSON Serialization Sorting Content Manipulation Forms Objects Pass by Reference Tables Inheritance Delete Callback Graphs Classes ECMAScript 2015 Borders Inline Styles SQL CASE Test Case Design Unit Testing Hyperlink IFrame Dynamic Programming LINQ Multithreading Synchronization HashSet TDD Integer Division Timing Events Field Modifiers Right Join Database Normalization Null Coalescing Operator Null Conditional Operator Abstract Class Method Overriding Complexity Stack Higher Order Function Interfaces XML Tuples CTE Ajax HTTP Promise Stream Selectors Responsive Design CSS Advanced Element Size Pagination Associative Arrays Dynamic Objects Bookmarks CSS Layout Accessibility CSS Basics UI Dialog Box Semantic Tags StringBuilder
Recommended Job Roles

These are the job roles that we recommend for the HTML/CSS, JavaScript, C#, and SQL online test.

.NET Developer
C# Developer
Full-Stack Developer
JavaScript Developer
SQL Developer
Web Developer

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