C# Step by Step & QnA Series ( Freshers and Experienced )
105 Videos with Essential Source Codes(20+ Hours of Course) (Subscription Validity For 8 Months)
What you'll learn :-
CSharp Interview Questions and Answers course is not only for freshers but also for experienced (seniors) to brush-up who have left behind the basics and fundamentals of .NET/C#.These videos are purely practical and also covers aspects of c# interview preparation. Get revised with all the videos listed and become ready with foundation of programming.
Here in this course we have also covered C# Interview Questions and Answers again this is for everyone, For freshers and as well for experienced this is important for those who wants make their base strong fundamentally. Here we have all topics to from CLR, CTS, Garbage Collector, Delegates and Events, Boxing and Unboxing, Implicit casting and many more. If you watch these videos definitely it will help you in your interview preparation.
Best Seller Videos For .NET C# Interview Questions & Answers For Freshers And .NET C# Interview Questions & Answers For Experienced.
Course Content
- Lab 1 :- C# fundamentals, For loop, data types, Error handling, classes/objects, Methods and functions.
- Lab 2 :- Synch, Asynch, Delegates, Multicast Delegates and Events.
- Lab 3 :- Simple File Search Project.
- Lab 4 :- Customer Project(2 layers and validations).
- Lab 5 :- Inserting customer data using ADO.NET.
- Lab 6 :- Display, Update and Delete.
- Lab 7 :- Reusability and Configuration.
- Lab 7.1 :-Using SQL script files.
- Lab 8:- Implementing the Product master table.
- Lab 9 :- Implementing Stored Procedures.
- Lab 10 :- In-memory inserts and update.
- Lab 11 :- In-memory Deletes & understanding Usability.
- 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 ?
- 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.
- 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 ?
- Question 46 :- Explain static vs dynamic polymorphism ?
- Question 47 :- Explain operator overloading ?
- 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 59 :- Explain Multiple inheritance in Interface ?
- Question 60 :- Explain Interface Segregation principle ?
- Question 61 :- Can we create instance of interface ?
- Question 62 :- Can we do Multiple inheritance with Abstract classes ?
- Question 63 :- Abstract Class vs interface interview questions and answers.
- Question 64 :- Why do we need constructors ?
- Question 65 :- In parent child which constructor fires first ?
- Question 66 :- How are initializers executed ?
- Question 67 :- How are static constructors executed in Parent child ?
- Question 68 :- When does static constructor fires ?
- Question 69 :- What is Shadowing?
- Question 70 :- Explain method hiding?
- Question 71 :- Shadowing vs Overriding ?
- Question 72 :- When do we need Shadowing ?
- Question 73 :- Explain Sealed Classes ?
- Question 74 :- Can we create instance of sealed classes ?
- Question 75 :- What are nested classes and when to use them ?
- Question 76 :- Can Nested class access outer class variables ?
- Question 77 :- Can we have public,protected access modifiers in nested class ?
- Question 78 :- Explain Partial classes ?
- Question 79 :- In What scenarios do we use partial classes ?
- Question 80 :- What is SOLID ?
- Question 81 :- What is the full form of SOLID ?
- Question 82 :- What is the goal of SOLID ?
- Question 83 :- Explain SRP with A example ?
- Question 84 :- What is the benefit of SRP ?
- Question 85 :- Explain OCP with a example ?
- Question 86 :- What is the benefit of OCP ?
- Question 87 :- Can you explain LISKOV Principle and it's violation?
- Question 88 :- How can we fix LISKOV Problem ?
- Question 89 :- Explain Interface Segregation Principle ?
- Question 90 :- Is there a connection between LISKOV and ISP ?
- Question 91 :- Define dependency inversion ?
- Question 92 :- What is higher level module and lower level module ?
- Question 93 :- How does dependency inversion benefit, show with an example ?
- Question 94 :- Will only Dependency inversion solve decoupling problem ?
- Question 95 :- Why do developers move object creation outside high lever module ?
- Question 96 :- Explain IOC ( Inversion of Control) ?
- Question 97 :- Explain Dependency Injection with an example ?
- Question 98 :- Is SOLID, IOC and DI design pattern or Principle?
- Question 99 :- Is only SOLID Enough for good code/ architecture ?
- Question 100 :- What are the different types of "USING/HAS A" relationship ?
- Question 101 :- What is a composition relationship ?
- Question 102 :- Explain Aggregation ?
- Question 103 :- Explain Association ?
- Question 104 :- Differentiate between Composition vs Aggregation vs Association ?
- Question 105 :- UML Symbols for Composition, Aggregation and Association
- Question 106 :- Explain stack and Heap ?
- Question 107 :- Where are stack and heap stored ?
- Question 108 :- What goes on stack and what goes on heap ?
- Question 109 :- How is the stack memory address arranged ?
- Question 110 :- How is stack memory deallocated LIFO or FIFO ?
- Question 111 :- How are primitive and objects stored in memory?
- Question 112 :- Can primitive data types be stored in heap ?
- Question 113 :- Explain value types and reference types ?
- Question 114 :- Explain byval and byref ?
- Question 115 :- Differentiate between copy byvalue and copy byref ?
- Question 116 :- What is boxing and unboxing ?
- Question 117 :- Is boxing unboxing good or bad ?
- Question 118 :- Can we avoid boxing and unboxing ?
- Question 119 :- What effect does boxing and unboxing have on performance ?
- Question 120 :- Are string allocated on stack or heap ?
- Question 121 :- How many stack and heaps are created for an application ?
- Question 122 :- How are stack and heap memory deallocated ?
- Question 123 :- Who clears the heap memory ?
- Question 124 :- Where is structure allocated Stack or Heap ?
- Question 125 :- Are structures copy byval or copy byref ?
- Question 126 :- Can structures get created on Heap ?
- Question 127: - Explain Garbage collector (GC)?
- Question 128:- How does Garbage collector know when to clean the objects ?
- Question 129 :- Is there a way we can see this Heap memory ?
- Question 130 :- Does Garbage collector clean primitive types ?
- Question 131: - Managed vs UnManaged code/objects/resources?
- Question 132:- Can garbage collector clean unmanaged code ?
- Question 133:- Explain Generations ?
- Question 134:- What is GC0,GC1, and GC2 ?
- Question 135:- Why do we need Generations ?
- Question 136:- Which is the best place to clean unmanaged objects ?
- Question 137:- How does GC behave when we have a destructor ?
- Question 138:- What do you think about empty destructor ?
- Question 139:- Explain the Dispose Pattern?
- Question 140 :- Finalize vs Destructor ?
- Question 141:- What is the use of using keyword ?
- Question 142:- Can you force Garbage collector ?
- Question 143:- Is it a good practice to force GC ?
- Question 144:- How can we detect a memory issues ?
- Question 145:- How can we know the exact source of memory issues ?
- Question 146 :- What is a memory leak ?
- Question 147 :- Can .NET Application have memory leak as we have GC?
- Question 148:- How to detect memory leaks in .NET applications ?
- Question 149:- Explain weak and strong references ?
- Question 150 :- When will you use weak references ?
- Question 151:- What are design patterns?
- Question 152 :- Which are the different types of design patterns?
- Question 153 :- Explain structural , Behavioral and Creational design pattern ?
- Question 154:- Explain Singleton Pattern and the use of the same?
- Question 155:- How did you implement singleton pattern?
- Question 156:- Can we use Static class rather than using a private constructor?
- Question 157:- Static vs Singleton pattern?
- Question 158:- How did you implement thread safety in Singleton?
- Question 159:- What is double null check in Singleton?
- Question 160:- Can Singleton pattern code be made easy with Lazy keyword?
- Question 161:- Can we rid of this double null check code?
- Question 162:- What is the use of repository pattern?
- Question 163:- Is Dal (Data access Layer) and Repository same?
- Question 164:- What is Generic repository pattern ?
- Question 165:- Is abstraction the only benefit of Repository?
- Question 166:- How to implement transaction in repository?
- Question 167:- What is Unit of work design pattern?
- Question 168:- Do we need repository pattern as EF does almost the same work?
- Question 169:- Did you do unit testing with Repository ?
- Question 170:- How does repository pattern make unit testing easy?
- Question 171:- How can we do mock testing with Repository?
- C# interview questions with answers PDF.
- What is IL code, CLR, CLS & JIT? - Part1 (9 Minutes)
- What is IL code, CLR, CLS & JIT? - Part2 (10 Minutes)
- Explain JIT,Pre-jit,Eco-Jit,Normal-Jit and NGEN.EXE?(19 Minutes)
- What is CAS, evidence, permission set & code groups? (9 Minutes)
- What are the changes in .NET 4.0 security model & What is sandboxing?(12 Minutes)
- Explain Assembly, EXE and DLL.
- Explain App Domain.
- What is the difference between managed & unmanaged code? (5 Minutes)
- What is Garbage Collector Gen 0, 1 & 2? (10 Minutes)
- What is IDisposable interface & finalize dispose pattern in GC? (9 Minutes)
- What is the difference between strong and weak references? (11 Minutes)
- What is delay signing? (9 Minutes)
- Can we see simple example of GAC & How to handle multiple versions in GAC(Binding redirect)? (16 Minutes)
- What are different .NET datatypes and its uses according to scenarios? (39 Minutes)
- Explain TypeSafe, Casting, Explicit casting and Implicit casting? (12 Minutes)
- Explain the sentence "C# strings are immutable"?(Also covers stringbuilder & interning) (22 Minutes)
- Explain Synch, Asynch, Delegates, Multicast Delegates and Events.
- How can we make Asynchronous method calls using delegates? (5 Minutes)
- What are anonymous methods in C#? (12 Minutes)
- Why anonymous types are preferred over Tuples? (25 Minutes)
- What is the use of Lambda Expression Action<>, Predicate<> & Func<>? (28 Minutes)
- What do you mean by Covariance & Contravariance in .NET 4.0? (11 Minutes)
- What is the use of checked and unchecked keyword? (7 Minutes)
- What is a stack, Heap, Value types and Reference types? (14 Minutes)
- What is boxing and unboxing? (10 Minutes)
- C# Out Vs Ref. (7 Minutes)
- What is optimistic and pessimistic locking? - Part1 (7 Minutes)
- Can you explain optimistic locking? - Part2 (12 Minutes)
- Can you explain pessimistic locking? - Part3 (15 Minutes)
- What are regular expressions & can we see some practical demonstrations? (16 Minutes)
- .NET 4.5 feature - Why do we need REGEX timeout? (8 Minutes)
- 5 tips to improve your C# debugging.(18 Minutes)
- Can you explain Named Parameters, Ref, Out, Volatile & Parsetry? (38 Minutes)
- What is the difference between Const & ReadOnly? (8 Minutes)
- Explain the difference between "IS" and "AS" keyword? (5 Minutes)
- What are Extension Methods? (11 Minutes)
- What is #Debug directive? (5 Minutes)
- What is the difference between Debug and Release? (8 Minutes)
- What is serialization and deserialization? (14 Minutes)
- What is the difference between TypeOf and GetType? (7 Minutes)
- What is IComparable and IComparer? (16 Minutes)
- What is the use of Yield Keyword in C#? (11 Minutes)
- What is a C# indexer? (7 Minutes)
- What is the difference between == vs .Equals()? (21 Minutes)
- When should we override GetHashCode? (27 Minutes)
- What are ??(Coalescing operators)? (4 Minutes)
- What is C# reflection? (11 Minutes)
- What is Dynamic keyword & How does it differ from Reflection? (9 Minutes)
- What is the difference between Early binding and Late binding? (4 Minutes)
- What is a difference between VAR and Dynamic keyword? (5 Minutes)
- What is the use of VAR keyword in C#? (15 Minutes)
- What are Circular Dependencies and How to resolve them? (10 Minutes)
- How can we mark a method as deprecated? (3 Minutes)
- What is the difference between Build VS Rebuild Vs Clean? (6 Minutes)
- Importance of bin folder & obj folder in C#.
- What is Naming Convention? (8 Minutes)
- What is Nuget? (6 Minutes)
- What are portable class libraries? (4 Minutes)
- What is Asynch and Await keywords? (6 Minutes)
- Explain Concurrency VS Parallelism? - (Part 1)
- Does Async use threads? - (Part 2)
- What are ENUM's and flags in ENUMS? (7 Minutes)
- How to convert string to ENUM? (5 Minutes)
- How to use MSMQ with C#? (16 Minutes)
- Explain NULLABLE Types? (4 Minutes)
- Explain C# Attributes? (16 Minutes)
- What is AutoMapper? (6 Minutes)
- What are DataAnnotations? (10 Minutes)
- C# Random numbers. (20 Minutes)
- What is .NET Core, DNX, DNU and DNVM? (46 Minutes)
- How to work with files and folders (System.IO)?
- Explain C# Exceptions ?
- Difference between Throw and Throw ex in C#?
- Learn Redis Cache in 20 minutes.
- POST, GET, PUT, DELETE & PATCH.
- Preprocessor Directives/Symbols.
- What are the different types of collections in .NET?- Part 1
- What is the difference between Array & ArrayList?- Part 2
- Can you prove why arrays are faster than arraylist?- Part 3
- What are the problems with arraylist & how can we solve the same by Hashtables?- Part 4
- What are stacks & queues?- Part 5
- What are special collections?- Part 6
- What are Generics & What are generics collections?- Part 7
- What are generics collections?- Part 8
- What is the use of IEnumerator, ICollection, IDictionary & IList?- Part 9
- What is the difference between IEnumerable and IEnumerator?
- Differentiate between IEnumerable vs IQueryable?
- Explain Generics Constraints?
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