Interview Questions & Answers Tutorial

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Interview Questions & Answers Tutorial

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What you'll learn :

Working in C#, ASP.NET MVC, Angular, MSBI & SQL Server is one thing and cracking interviews are different ball game. You can be hero in your project who has executed huge projects but if you are not able to answer simple questions C#, ASP.NET MVC, Angular, MSBI & SQL its difficult to reach to the next level.

This Interview question and answers course covers 190+ most asked questions with answers and code demonstration. After completing this course you should be able to handle interviews more efficiently.  Happy learning , Happy job hunting.


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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 :- Why do we need OOP ?
  • Question 38 :- What are the important pillars of OOPs ?
  • Question 39 :- What is a class and object ?
  • Question 40 :- Abstraction vs Encapsulation?
  • Question 41 :- Explain Inheritance ?
  • Question 42 :- Explain virtual keyword ?
  • Question 43 :- What is overriding ?
  • Question 44 :- Explain overloading ?
  • Question 45 :- 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 & Answers - Part 7.
  • Question 62  :- Why do we need constructors ?
  • Question 63  :- In parent child which constructor fires first ?
  • Question 64  :- How are initializers executed ?
  • Question 65  :- How are static constructors executed in Parent child ?
  • Question 66  :- When does static constructor fires ?
C# Interview Questions & Answers - Part 8.
  • Question 70 :- What is Shadowing?
  • Question 71 :- Explain method hiding?
  • Question 72 :- Shadowing vs Overriding ?
  • Question 73 :- When do we need Shadowing ?
  • Question 74 :- Explain Sealed Classes ?
  • Question 75 :- Can we create instance of sealed classes ?
  • Question 76 :- What are nested classes and when to use them ?
  • Question 77 :- Can Nested class access outer class variables ?
  • Question 78 :- Can we have public,protected access modifiers in nested class ?
  • Question 79 :- Explain Partial classes ?
  • Question 80 :- In What scenarios do we use partial classes ?

C# interview questions with answers PDF.

Angular Interview Questions & Answers :-

25 basics interview Q & A on Angular - Part 1
  • 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 ?
Angular Interview Questions and Answers - Part 2
  • 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?
Angular Interview Questions and Answers - Part 7

  • Question no: 56 :- What are Interceptors in Angular?
  • Question no: 57 :- How to implement Interceptors?
  • Question no: 58 :- Give some use of Interceptors?
  • Question no: 59 :- Can we provide multi-Interceptors?
ASP.NET MVC Interview Questions with answers :-

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 ?
ASP.NET MVC Interview Questions with answers - Part 2.
  • 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 ?
ASP.NET MVC Interview Questions with answers - Part 3.
  • 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?
ASP.NET MVC Interview Questions with answers - Part 4.
  • 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?
ASP.NET MVC Interview Questions with answers - Part 5.
  • 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?
MSBI Interview Questions and Answers - Part 2.
  • 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?
MSBI Interview Questions and Answers - Part 3.
  • 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?
MSBI Interview Questions and Answers - Part 4.
  • Question 16 : What is Merge Join and explain its different types of Joins?
  • Question 17 : Difference between OLTP & OLAP.
  • Question 18 : What is Fact, Dimension, Cube, Star Schema and Snow Flake?
  • Question 19 : How to create a Cube in SSAS?
  • Question 20 : What is SCD?
MSBI Interview Questions and Answers - Part 5.
  • Question 21 :-  What is CDC?
  • Question 22 :- What is SSRS, what is Data Region, can embed/display SSRS Reports in any application, File extension and Code behind of SSRS Report.
  • Question 23 :- How to Deploy SSRS reports?
  • Question 24 :- Difference between Tabular and Matrix Report.
  • Question 25 :- What is Page Break in SSRS?
  • Question 26 :- Difference between Drilldown Report & Sub Report.
SQL Server Interview Questions & Answers :-

SQL Server Interview Questions & Answers - Part 1 :-

  • Question 1 :- Explain normalization ?
  • Question 2 :- How to implement normalization ?
  • Question 3 :- What is denormalization ?
  • Question 4 :- Explain OLTP vs OLAP ?
  • Question 5 :- Explain 1st,2nd and 3rd Normal form ?
  • Question 6 :- Primary Key vs Unique key ?
  • Question 7 :- Differentiate between Char vs Varchar ?
  • Question 8 :- Differentiate between Char vs NChar ?
  • Question 9 :- Whats the size of Char vs NChar ?
  • Question 10 :- What is the use of Index ?
  • Question 11 :- How does it make search faster?
  • Question 12 :- What are the two types of Indexes ?
  • Question 13 :- Clustered vs Non-Clustered index?
  • Question 14 :- Function vs Stored Procedures?
  • Question 15 :- What are triggers and why do you need it ?
  • Question 16 :- What are types of triggers ?
  • Question 17 :- Differentiate between After trigger vs Instead Of ?
  • Question 18 :- What is need of Identity ?
  • Question 19 :- Explain transactions and how to implement it ?
  • Question 20 :- What are inner joins ?
  • Question 21 :- Explain Left join ?
  • Question 22 :- Explain Right join ?
  • Question 23 :- Explain Full outer joins ?
  • Question 24 :- Explain Cross joins ?
SQL Server Interview Questions & Answers - Part 2 :-

  • Question 25:-Why do we need UNION ?
  • Question 26:-Differentiate between Union vs Union All ?
  • Question 27:-can we have unequal columns in Union?
  • Question 28:-Can column have different data types in Union ?
  • Question 29:- Which Aggregate function have you used ?
  • Question 30:- When to use Group by ?
  • Question 31:- Can we select column which is not part of group by ?
  • Question 32:- What is having clause ?
  • Question 33:- Having clause vs Where clause?
  • Question 34:- How can we sort records ?
  • Question 35:- Whats the default sort ?
  • Question 36:- How can we remove duplicates ?
  • Question 37:- Select the first top X records ?
  • Question 38:- How to handle NULLS ?
  • Question 39:- What is use of wild cards ?
  • Question 40:- What is the use of Alias ?
  • Question 41:- How to write a case statement ?
  • Question 42:- What is self reference tables ?
  • Question 43:- What is self join ?
  • Question 44:- Explain the between clause ?
SQL Server Interview Questions & Answers - Part 3 :-
  • Question 45:- Explain SubQuery ?
  • Question 46:- Can inner Subquery return multiple results ?
  • Question 47:- What is Co-related Query ?
  • Question 48:-Differentiate between Joins and SubQuery ?
  • Question 49:-Performance Joins vs SubQuery?
SQL Server Interview Questions & Answers - Part 4 :-
  • Question 50:- Find NTH Highest Salary in SQL.
SQL Server Interview Questions & Answers - Part 5
  • Question 51:-  Select the top nth highest salary using correlated Queries?
  • Question 52:-  Select top nth using using TSQL
  • Question 53:-  Performance comparison of all the methods.
Power BI Interview Questions & Answers :-

Part 1 - Power BI Interview Q&A :-

Question 01 :- What are Calculated columns ?
Question 02 :- Where can calculated columns be created in Power BI?
Question 03 :- What are calculated measures in Power BI?
Question 04 :- Where can calculated measures be created in Power BI?
Question 05 :- Difference between Calculated Column and Measure in Power BI?
Question 06 :- What are M codes in power bi & Where Can You Write Power Query M Code?
Question 07 :- What are Parameters in Power BI?
Question 08 :- What is Power BI data gateway?
Question 09 :- Do we need data gateway for schedule refresh in Power BI?
Question 10 :- What is Query Folding in Power BI?
Question 11 :- What is the use of Split function in Power BI?
Question 12 :- Difference between visual level, page level and report level filters in Power BI?

Part 2 - Power BI Interview Q&A :-

Question 13:- Difference between ALL and ALL EXCEPT functions?
Question 14:- What is "What if" parameter in Power BI?
Question 15:- How to keep or remove specific rows in Power BI?
Question 16: What is grouping in power bi and how to use it?
Question 17:- Difference between Distinct and Values in Power BI?

Part 3 - Power BI Interview Q&A :-
Question 18:-What is DAX and most common DAX functions used?
Question 19:- What is Power Query?
Question 20:- What are different types of Filters in Power BI Reports?
Part 4 - Power BI Interview Q&A :-
Question 21 :- Difference between sum and sumx in power bi?
Question 22 :- Import Query vs Direct Query in power bi?
Power BI Interview Q&A PDF

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