Interview Questions & Answers Tutorial

About QuestPond: It started 15 years back with the one single goal of creating quality step-by-step IT programming-related lessons.

The main goal of QuestPond is to create Step by Step lessons on C#, ASP.NET, Design patterns, SQL, and so on. As years moved on I added other step-by-step lessons like Angular, SharePoint, MSBI, Azure and so on.

C# Interview Questions & Answers Videos :-

30 Important C# interview Questions and Answers - Part 1.

• Question 1 :- Explain difference between .NET and C# ?
• Question 2 :- .NET Framework vs .NET Core vs .NET 5.0
• Question 3 :- What is IL ( Intermediate Language) Code ?
• Question 4 :- What is the use of JIT ( Just in time compiler) ?
• Question 5 :- Is it possible to view IL code ?
• Question 6 :- What is the benefit of compiling in to IL code ?
• Question 7 :- Does .NET support multiple programming languages ?
• Question 8 :- What is CLR ( Common Language Runtime) ?
• Question 9 :- What is managed and unmanaged code ?
• Question 10 :- Explain the importance of Garbage collector ?
• Question 11 :- Can garbage collector claim unmanaged objects ?
• Question 12 :- What is the importance of CTS ?
• Question 13 :- Explain CLS ?
• Question 14 :- Difference between Stack vs Heap ?
• Question 15 :- What are Value types & Reference types?
• Question 16 :- Explain boxing and unboxing ?
• Question 17 :- What is consequence of boxing and unboxing ?
• Question 18 :- Explain casting, implicit casting and explicit casting ?
• Question 19 :- What can happen during explicit casting ?
• Question 20 :- Differentiate between Array and ArrayList ?
• Question 21 :- Whose performance is better array or arraylist ?
• Question 22 :- What are generic collections ?
• Question 23 :- What are threads (Multithreading)?
• Question 24 :- How are threads different from TPL ?
• Question 25 :- How do we handle exceptions in C#(try/catch)?
• Question 26 :- What is the need of finally?
• Question 27 :- Why do we need the out keyword ?
• Question 28 :- What is the need of Delegates ?
• Question 29 :- What are events ?
• Question 30 :- Whats the difference between Abstract class and interface ?

C# Interview Questions & Answers - Part 2.

• Question 31 - What is a Delegate and how to create a Delegate?
• Question 32 - Where have you used Delegates?
• Question 33 - What is a Multicast Delegates?
• Question 34 - What is an Event?
• Question 35 - How to Create an Event?
• Question 36 - Delegate VS Events.

C# Interview Questions & Answers - Part 3.

• Question 37 :- What is a class and object ?
• Question 38 :- Abstraction vs Encapsulation?
• Question 39 :- Explain Inheritance ?
• Question 40 :- Explain virtual keyword ?
• Question 41 :- What is overriding ?
• Question 42 :- Explain overloading ?
• Question 43 :- Overloading vs Overriding ?

C# Interview Questions & Answers - Part 4.

• Question 44 :- What is polymorphism ?
• Question 45 :- Can polymorphism work with out inheritance ?
• Question 46 :- Explain static vs dynamic polymorphism ?
• Question 47 :- Explain operator overloading ?

C# Interview Questions & Answers - Part 5.

• Question 48 :- Why do we need Abstract classes ?
• Question 49 :- Are Abstract methods virtual ?
• Question 50 :- Can we create a instance of Abstract classes ?
• Question 51 :- Is it compulsory to implement Abstract methods ?
• Question 52 :- Why simple base class replace Abstract class ?
• Question 53 :- Explain interfaces and why do we need it ?
• Question 54 :- Can we write logic in interface ?
• Question 55 :- Can we define methods as private in interface ?
• Question 56 :- If i want to change interface whats the best practice ?
• Question 57 :- Explain Multiple inheritance in Interface ?
• Question 58 :- Explain Interface Segregation principle ?
• Question 59 :- Can we create instance of interface ?
• Question 60 :- Can we do Multiple inheritance with Abstract classes ?

C# Interview Questions & Answers - Part 6.

• Abstract Class vs interface interview questions and answers.

C# interview questions with answers PDF.

Angular Interview Questions & Answers :-

• Question no: 1 :- Whats the use of Angular ?
• Question no: 2 :- What are directives in Angular ?
• Question no: 3 :- Explain the different types of Angular directives ?
• Question no: 4 :- Explain the importance of NPM and Node_Modules folder ?
• Question no: 5 :- Explain the importance of Package.json file in Angular ?
• Question no: 6 :- What is typescript and why do we need it ?
• Question no: 7 :- Explain importance of Angular CLI ?
• Question no: 8 :- Explain the importance of Component and Modules ?
• Question no: 9 :- What is a decorator in Angular ?
• Question no: 10 :- What are Annotationa or MetaData ?
• Question no: 11 :- What is a template ?
• Question no: 12 :- Explain the four types of Data bindings in Angular ?
• Question no: 13 :- Explain architecture of Angular ?
• Question no: 14 :- What is SPA in Angular ?
• Question no: 15 :- How to implement SPA in Angular ?
• Question no: 16 :- How to implement routing in Angular ?
• Question no: 17 :- Explain Lazy Loading ?
• Question no: 18 :- How to implement Lazy Loading in Angular ?
• Question no: 19 :- Define Services ?
• Question no: 20 :- What is Depedency Injection ?
• Question no: 21 :- How to implement Depedency Injection ?
• Question no: 23 :- Whats the benefit of Depedency Injection ?
• Question no: 24 :- Differentiate between ng serve and ng build ?
• Question no: 25 :- Explain the --prod parameter in ng build ?

• Questions No:- 26 :- Explain ViewChild and ViewChildren?
• Questions No:- 27 :- Why do we need Template reference variables?
• Questions No:- 28 :- What is ContentProjection?
• Questions No:- 29 :- Explain Content projection Slot?
• Questions No:- 30 :- What is ContentChild and ContentChildren?
• Questions No:- 31 :- ViewChild vs ViewChildren vs ContentChild vs ContentrChildren?

Angular interview questions & answers - Part 3

• Questions No:- 32 :- Explain the importance of Component life cycle ?
• Questions No:- 33 :- Explain events and sequence of component life cycle ?
• Questions No:- 34 :- Constructor vs ngOnInit() ?

Angular Interview Questions and Answers - Part 4

• Questions No:- 35 :- How to make HTTP calls using Angular ?
• Questions No:- 36 :- What is the need of Subscribe function ?
• Questions No:- 37 :- How to handle errors when HTTP fails ?
• Questions No:- 38 :- How to pass data between components ?
• Questions No:- 39 :- Explain importance of input, output & event emitters ?
• Questions No:- 40 :- How to pass during routing ?
• Questions No:- 41 :- Is it a good practice to pass data using services ?

Angular Interview Questions and Answers - Part 5

• Question No: 42:- What is the need of Angular Pipes?
• Question No: 43:- Can you name some built-in Angular Pipes?
• Question No: 44:- How to create Custom pipes in Angular?

Angular Interview Questions and Answers - Part 6

• Question no: 45 :- Whats the full form of RxJs?
• Question no: 46 :- What is the purpose of RxJs?
• Question no: 47 :- What are observables and observers?
• Question no: 48 :- Explain the use of Subscribe with sample code.
• Question no: 49 :- How to unsbscribe in RxJs?
• Question no: 50 :- Explain concept of operators with sample code.
• Question no: 51 :- How to install RxJs?
• Question no: 52 :- Differentiate between promise and RxJs?
• Question no: 53 :- In Angular where have you used RxJs?
• Question no: 54 :- Which operators have you used from RxJs?
• Question no: 55 :- What is Push/reactive vs Pull/Imperative?

ASP.NET MVC Interview Questions with answers - Part 1.

• Question 1 :- What is ASP .NET MVC Core ?
• Question 2 :- Differentiate between ASP .NET Webforms vs MVC vs MVC core ?
• Question 3 :- Explain MVC Architecture ?
• Question 4 :- Why do we have wwwroot folder ?
• Question 5 :- Explain the importance of appsettings.json ?
• Question 6 :- How to read configurations from appsettings.json ?
• Question 7 :- What is dependency injection ?
• Question 8 :- Why do we need dependency injection ?
• Question 9 :- How do we implement dependency injection ?
• Question 10 :- What is the use of Middleware ?
• Question 11 :- How to create a Middle ware ?
• Question 12 :- What does startup.cs file do ?
• Question 13 :- ConfigureServices vs Configure method ?
• Question 14 :- Explain the different Ways of doing DI?
• Question 15 :- Explain Scoped vs Transient vs Singleton ?
• Question 16 :- What is Razor ?
• Question 17 :- How to pass Model data to a View ?
• Question 18 :- What is the use of Strongly typed views ?
• Question 19 :- Explain the concept of ViewModel in MVC ?
• Question 20 :- What is Kestrel Web Server ?
• Question 21 :- Why Kestrel when we have IIS server ?
• Question 22 :- What is the concept of Reverse proxy ?
• Question 23 :- What are cookies ?
• Question 24 :- What is the need session management ?
• Question 25 :- What are the various ways of doing Session management in ASP.NET ?

• Question 26 :- What exactly is a session ?
• Question 27 :- Explain "HTTP is a stateless protocol" ?
• Question 28 :- What are various way of doing session management ?
• Question 29 :- Are sessions enabled by default ?
• Question 30 :- How to enable sessions in MVC core ?
• Question 31 :- Are sessions variables shared(global) between users ?
• Question 32 :- Do session variables use cookies ?
• Question 33 :- What is a cookie ?
• Question 34 :- Explain idle time out in sessions ?
• Question 35 :- What does a Context means in HTTP ?

• Question 36 :- When should we use viewdata ?
• Question 37 :- How to pass data from controller to view ?
• Question 38 :- In same request can viewdata persist across actions ?
• Question 39 :- ViewData vs ViewBag
• Question 40 :- How does ViewBag work internally?
• Question 41 :- Explain ViewModel?
• Question 42 :- ViewBag vs ViewModel whats the best practice?

• Question 43 :- Explain tempdata ?
• Question 44 :- Can tempdata persist across action redirects ?
• Question 45 :- How is tempdata different from viewdata ?
• Question 46 :- If tempdata is read is it available for next request ?
• Question 47 :- How to persist tempdata ?
• Question 48 :- What does Keep do in tempdata ?
• Question 49 :- Explain Peek in tempdata ?
• Question 50 :- How is tempdata different from session variables ?
• Question 51 :- If i restart the server does tempdata,session stay ?
• Question 52 :- Is tempdata private to a user ?
• Question 53 :- ViewData vs ViewBag vs Tempdata vs Session variables?

• Question 54 :- What is WebAPI ?
• Question 55 :- What is the advantage of WebAPI ?
• Question 56 :- Explain REST and Architectural constraints of REST?
• Question 57 :- Can we use TCPIP protocol with Web API?
• Question 58 :- How WebAPI different from MVC controller ?
• Question 59 :- What is content negotiations in Web API ?
• Question 60 :- WebAPI vs WCF ?
• Question 61 :- WCF REST vs WebAPI REST ?
• Question 62 :- How to return HTTP status codes ?
• Question 63 :- For error which status code is returned ?
• Question 64 :- How did you secure your web API ?
• Question 65 :- How do current JS frameworks work with webAPI ?
• Question 66 :- How did you implement JWT token security ?

MSBI Interview Questions & Answers :-

MSBI Interview Questions and Answers - Part 1.

• Question 1 - What is ETL Process with example?
• Question 2 - Difference between control flow and data flow in SSIS?
• Question 3 - Explain the architecture of SSIS?
• Question 4 - Explain the types of Perfmon counters for SSIS?
• Question 5 - Explain the types of Cache Mode in SSIS Lookup component?

• Question 6 - How to do Error Handling in SSIS.
• Question 7 - Types of Containers in SSIS.
• Question 8 - How to do SSIS Package Deployment to SQL Server?
• Question 9 - What are Transactions?
• Question 10 - What are Checkpoints?

• Question 11 : What is Logging in SSIS?
• Question 12 : How to create File System Deployment?
• Question 13 : Difference between Merge and Union All?
• Question 14 : What is the Data Profiling task?
• Question 15 : What is Precedence Constraints?

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