Technologies |
| Top 10 Freshers level Interview questions |
1. The very first thing that
you just need to know about the .NET language is what does (.) represent in the
language? What do you know about .NET and its framework? (.)
Represent the interconnection of the various network applications. It was the
personal language built by the Microsoft. NET is just as simple as other
language like C, C++ and Java. In fact, most of the syntax that we are using in
the language is similar so it is easy to use.
.NET Framework: It is a
development and execution environment that allows different programming
languages and libraries to work together effortlessly to create Windows-based
application that are easier to build, manage and deploy.
2. Read more about why the
language is not platform independent like Java.? .NET
is Platform Dependent since once the code is written it is compiled into
Microsoft Intermediate Language (MSIL) code which is independent of platform
but it is half compiled code, then Common
Language Runtime (CLR) convert it into device specific code i.e. it is
platform dependent while we know the output of the Java compiler is not
executable code. Rather, it is bytecode. Translating a Java program into
bytecode makes it much easier to run a program in a wide variety of
environments because only the JVM (Java Virtual Machine) need to be implemented
for each platform.
3. Pick out the catchy
differences between Java and .NET.
.NET is platform dependent whereas
Java is platform independent.
.NET support cross level
integration while Java doesn't support cross level integration.
.NET is created by Microsoft
while Java is created by Sun Microsystem.
4. Explain the OOP concept? The 3 main concepts are:
I. Inheritance: It is
defined as the mechanism of deriving a new class from a base class. It allows
reuse of existing code.
II. Encapsulation: It
is defined as the wrapping up of data and function into single class.
Encapsulation is done by arranging the data hierarchically.
III. Polymorphism:
Polymorphism means one name multiple forms. It allows us to have more than one
function with the same name in the program
Click imagination
hunt to see latest Blogs
5. What is Postback and
Partitioning Postback?
Postback: Unnecessary send the whole page information to the server. It
involves the change of values of all the controls.
Partitioning Postback: Only required control or
information must send to server. It involves changing the values only on the
update panel.
6. What are Array and
Collections? Array:
Array which store similar values. Array can be both Reference type and Value
type. There are three different types of array:
Single-Dimensional, contain
single value.
Multidimensional, contain
elements in dimension. Most common is two-dimensional array.
Jagged array, which contain
elements of different dimensions and sizes.
Collection: Collection which store
different values. At its most complexes it holds references too many other
objects. There are two different types of Collection:
Standard Collections, which
are found under the System.Collections namespace.
Generic Collections, under
System.Collections.Generic. The generic collections are more flexible and are
the preferred way to work with data to enhance code reuse, type safety, and
performance.
7. What are Constructors and
types? Define Copy Constructors? A Constructor initializes an object immediately upon
creation. It has the same name as the class in which it resides and is
syntactically similar to a method. Once defined, the Constructor is
automatically called immediately after the object is created, before the new
operator completes. Constructors look a little strange because they have no
return type, not even void. Constructor is called by using new keyword.
3 types of constructor are
there:
Default Constructor: In which method with same
name of the class is made with no parameter.
Parameterized Constructor: In which the parameters
(single or multiple) i.e. at least one parameter is passed in the method which
has the same name as the class name.
Copy Constructor: In which constructor
function has the same name as the name of the class and has to use deep copy of
the object. Copy Constructor is a similar to parameterized constructor in which
the copy of the method in the derived class is made with same parameters.
Click imagination
hunt to see latest Blogs
8. What is the use of
Abstract keyword? Point out some difference between Abstract and
Interface? Abstract
keyword can be used with class as well as method. But only abstract classes can
have abstract methods. Without inheritance you cannot use the functionality
provided by abstract methods. Child class has to give the implementation of
abstract method. Some differences between Abstract and Interface:
Abstract classes are used to
increase re-usability in inheritance while interfaces are used to implement or
force some methods across classes.
In Abstract classes parent
level functionality can be accessed by child class while in interfaces child level
functionality can be accessed by parent class.
Abstract classes are
inherited while interfaces are implemented.
9. Explain Inheritance? Inheritance: Inheritance
means acquiring the properties of parent class to the child class plus with a
feature of addition.
Single inheritance: Class B is derived from base
class A. A-> B
Multiple inheritance: Multiple inheritance is not
achieved easily. Class C is derived from base class A and B. A, B-> c
Multilevel inheritance: Class B is derived from base
class A; C is derived from B class. A-> B-> C. Multiple is not supported
in C#.
Hybrid inheritance: Class B and C derived from
base class A. A-> B, C
10. What is the difference
between property and method? What is method overloading and overriding?
Properties follow different
naming convention for read and write hence it is bidirectional while method can
read or write a value but not both hence it is unidirectional.
In property value as an
operator assigned while in method value as a parameter assigned.
Property process only single
value at a time while method can process multiple values at a time.
Property can execute at both
run time and designed time while method can execute at run time.
Method Overloading: Having
different method with the same name but different parameter within the same
class.
Method Overriding: Having
same name and signature for the method in base and derived class and derived
method inherit the base class method. Same signature means same number of
argument and same type of argument.
For any query,
comment us below.
Previous
- How to
improve vocabulary easily
Keep learning and sharing...
