C# and .NET Online Test

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About the test

The C# and .NET online test assesses knowledge of the .NET framework and its class library. This test includes live coding tasks in the C# programming language as it is the most used language for .NET.

The assessment includes work-sample tasks such as:

  • Working with classes, objects, and interfaces to write reusable code.
  • Implementing and properly using algorithms and data structures to optimize application performance.
  • Using the Async-Await pattern to work with asynchronous code.

A good .NET developer needs a solid understanding of the C# programming language and the .NET framework class library in order to write robust and maintainable code.

Sample public questions

Easy
20 min
code
Public
AI-resistant
C#
Arrays
Iteration

Your company is analyzing malware which targets numerical record files.

The malware uses a sliding window over the array of numbers in a file, and tries to match the following pattern:

T, -, -, X, -, -, -, T

Where the position ‘X' is compared to each position 'T'. The window is moved so 'X’ passes through all the values.

The malware has the following rules:

  • If any of the ‘T' positions in the pattern are bigger or equal to 'X’ the malware replaces 'X' with 0.
  • If the 'X' position in the pattern is near the left or right border and is missing a 'T' position neighbor, only the other side is considered.
  • The malware finds all the positions first and only then sets them to 0.

For example, if the values in a record file are the following:

new int[] { 1, 2, 0, 5, 0, 2, 4, 3, 3, 3 }

The expected values after the malware runs are:

new int[] { 1, 0, 0, 5, 0, 0, 0, 3, 3, 0 }

In this example, number 4 was set to 0 because 5 is the bigger number.

Implement the Simulate function so that the malware behavior is replicated for further study.

Easy
2 min
mca
Public
.NET
Class Modifiers
Method Modifiers
OOP

A class inherits a base class and it overrides a method from that base class.

Select all possible forms of the base class and its method:

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76 more premium C# and .NET questions

Enum, String, NET Versions, Order Chars, Max Sum, Gearbox, Integer to Object, Memory Leak, Product Refactoring, Sort Params, Sum of Numbers, Delayed Print, Third Party Components, String Operations, Fire Dragon, Animal Hierarchy, Racer, Read First Line, Prefix, Bicycle, Chinese Box, Car Rental, Eye of the Storm, Document Store, Snapshot, Shipping, Moving Total, Driver Exam, Ingredient Tuple, Classroom, Unique Product, Username, Weighted Average, Kilometer Converter, Stack to List, Document Counter, Disposable Wrapper, Platformer, String Occurrence, Hobbies, Language Teacher, Read Write Execute, Node, Friend, Patient Class, Internal Nodes, Crop Ratio, Unique Numbers, Wheel Defects, Shining Star, Log Parser, Shelf Test, Chain Link, Log Patch, Worker, Veterinarian, Window Manager, Ceramic Store, Stories, Paper Strip, Segment, Procedural Generator, XML Navigation, Flight Connections, Paragraph, Nullable Employee, Flimsy Ladder, Construction Game, Chemical Machine, Circuit Simulator, Citizen Income, Calories Burned, Vectors, Date Transform, Book Sale, Blog Posts.

Skills and topics tested

  • .NET
  • Enum
  • Class Library
  • CLR
  • LINQ
  • C#
  • Algorithmic Thinking
  • Accessibility Levels
  • OOP
  • Boxing and Unboxing
  • Memory Management
  • Refactoring
  • Pass by Reference
  • Async-Await
  • Multithreading
  • Package Manager
  • StringBuilder
  • Higher Order Function
  • Interfaces
  • Abstract Class
  • Synchronization
  • Exceptions
  • Field Modifiers
  • Data Structures
  • Sorting
  • Bug Fixing
  • Language
  • Lists
  • Arithmetic
  • HashSet
  • Tuples
  • Properties
  • Dictionary
  • Regex
  • Strings
  • Inheritance
  • Method Overriding
  • Complexity
  • Stack
  • Destructors
  • Linked List
  • Stream
  • Iteration
  • Recursion
  • Tree
  • Graphs
  • Arrays
  • Integer Division
  • TDD
  • Serialization
  • XML
  • Test Case Design
  • Unit Testing
  • Extension Methods
  • Queue
  • Dynamic Programming
  • Random
  • Dynamic Objects
  • Null Coalescing Operator
  • Null Conditional Operator
  • Conditions
  • Entity Framework
  • Eager Loading
  • Lazy Loading

For job roles

  • .NET Developer
  • Back-End Developer
  • C# Developer
  • Web Developer

Sample candidate report

What others say

Decorative quote

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

G2 - Crowd Badge
G2 - High Performer (2022)
Capterra - 4.5 Stars
Capterra - Shortlist (2022)

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