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About the test

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.

Sample public questions

Easy
7 min
code
Public
HTML/CSS
Borders
Element Size
Styling

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

Easy
3 min
mca
Public
C#
Inheritance
OOP

A company is designing the class hierarchy for various cache implementations:

public class Cache {}

public class DiskCache : Cache {}

public class MemoryCache : Cache {}

public class OptimizedDiskCache : DiskCache {}

Select all the answers that will result in a runtime exception.

Easy
3 min
code
Public
JavaScript
Error Handling
Language

Implement the ensure function so that it throws an error if called without arguments or the argument is undefined. Otherwise it should return the given value.

Easy
7 min
code
Public
SQL
Aggregation
Group by
Select

App usage data are kept in the following table:

TABLE sessions
  id INTEGER PRIMARY KEY,
  userId INTEGER NOT NULL,
  duration DECIMAL NOT NULL

Write a query that selects userId and average session duration for each user who has more than one session.

See the example case for more details.

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181 more premium HTML/CSS, JavaScript, C#, and SQL questions

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

Skills and topics tested

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

For job roles

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

Sample candidate report

What others say

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Simple, straight-forward technical testing

TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.

Jan Opperman, Grindrod Bank

Product reviews

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