.NET Interview Questions And Answers ASP.NET Interview Questions And Answers 2022 Simplilearn

the interview plays a vital role in any
job selection process
for that reason preparation is key
technical questions are part of the
interview process which impact more in
the interview
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session in this session we will see
asp.net interview questions with answers
if you are planning to start your career
as a developer
you have to possess some development
skills that empower your ability to
crack the interview
if you want to make a career in software
development and improve your chances
then this video on asp.net interview
questions and answers will help you make
your preparation easy
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we will look at the first category of
asp.net interview questions that is
beginner level interview questions
what is
asp.net asp.net is a server-side
technology used for developing dynamic
websites and web applications on the
internet
it also produces data-driven web
application
microsoft released asp.net in 2002 to
build dynamic websites and web
applications using the.net framework
what platform does asp.net use
asp.net is a cross platform which works
on the dotnet framework and runs on
linux windows mac os and docker
what is the asp.net lifecycle and lists
the types of lifecycle
when asp.net pages run it goes through
several steps of the lifecycle which
performs a series of actions like
initialization running restoring and
rendering
lifecycle is classified into two
categories
application lifecycle and page lifecycle
in application lifecycle the user
requests for accessing the application
page lifecycle has faces like
initialization restoring execution and
page rendering
what is mvc
so mvc is basically a software
architectural pattern that divides an
application into three main parts
that is model view and controller
model helps to create the data domain of
the application and represents the
public properties and business logic of
the application
view view represents the data tables
charts and diagrams by collecting the
data from the model
controller the controller helps in
handling the user interactions and
controls the flow of the application
list the languages used for asp.net
asp.net uses object-oriented programming
languages that provide a framework and
patterns which are easy to use languages
used by asp.net framework are c sharp or
vb.net
c-sharp is a programming language
developed by microsoft that runs on the
dotnet framework it is used for
developing web applications on the.net
framework
vb.net is a modern object oriented
programming language developed by
microsoft to combine the features of clr
and dot net
what type of library is used in asp.net
a library is a precoded object oriented
programming template collection used to
develop web-based and desktop
applications in asp.net
asp.net uses a web library to develop
web applications
what is clr
clr is the basic common language runtime
virtual machine component of the dotnet
framework used to run the code it
manages the executing.net programs and
implements a virtual execution system
internally
services that clr provide are
verification
garbage collection security and memory
management
what is iis and why do you use it
internet information server iis is the
most popular web server used to host and
provide internet-based services to
asp.net and asp web applications
iis has its own process engine to handle
the request
using an iis computer one can work as a
web server and provides functionality to
deploy asp.net web applications
it is also responsible for providing
responses to the request made by the
users
list the types of application lifecycle
application lifecycle is of 5 types
application start object creation http
application dispose and application end
application start is a method that you
execute when a user makes a request
object creation contains all the
information about current request and
browsing information
http application processes all
subsequent requests sent to the
application
dispose
dispose is responsible for releasing
manually unwanted resources
application end helps to unload the
memory of an application
list the advantages of using asp.net
asp.net is a development framework that
is used for developing web applications
it is one of the most preferred web
development technologies at present
there are a lot of benefits of using
asp.net here are some of its advantages
applications created using asp.net show
better performance
asp.net provides multi-development modes
for the applications
applications created using asp.net can
be used across the globe
asp.net is a language independent
what is an active server page
active server page is an html page used
to develop dynamic web pages it includes
one or more scripts on the microsoft web
server before sending the request to the
user esp was first released in december
1996 it is used to generate the content
that is sent to the client web browser
via the http response
describe web forms
web forms are web pages that a user
request using a browser it is built
using asp.net technology
it executes on the server and generates
output to the browser it also allows you
to add and create custom controls
some of the custom controls provided by
asp.net are label text box button
hyperlink and image button
what is a solution explorer
solution explorer displays the folder
and files of a project that appears on a
physical hard drive
list the components of asp.net
asp.net provides data-driven web
applications on the internet using
various components
some of the components are common
language runtime language library common
type system and windows forms
what is the difference between asp and
asp.net
esp is the first server-side scripting
language developed by microsoft to
design dynamic web forms whereas asp.net
is a server-side technology used for
developing dynamic websites and web
applications on the internet
asp uses ado that is activex data object
to connect with the database
whereas asp.net uses
ado.net to connect with the database
asp is written in vbscript asp.net is
written in c sharp
what type of protocol is used to call
web service
web service is a web-based functionality
accessed by using protocols
it uses xml to exchange the software
using common internet protocols
web service in asp.net has three aspects
they are
creating web service creating a proxy
consuming the web service
the http protocol is used in asp.net to
call a web service
explain users of global.asax
global file is used to execute the
application level events and set
application level variables
global.asax is used to handle high-level
applications like application start
session end and session start
now let us look at some of the
intermediate level asp.net interview
questions and answers what is a web
library
web library is a part of a website that
accesses all libraries from the browser
and helps in adding collections online
it contains base and user defined data
types
it supports to create web services
describe a view state
view state is a page level state
management technique that is used to
preserve the values of the page and
controls
view state contains the sections like
features background
scenario and class reference
what is a multi-view
multi-view is a parent control for the
view it is used to control all types of
the view multiview has the prefix mv
this is the syntax of multiview
what is early binding
early binding is used to check the
methods and properties during
compilation
it is fast and easy to code and also
reduces the compilation time it also
reduces the time by identifying the
errors
what is lead binding
lead binding takes more time to compile
it is hard to find out the object
through late binding late binding has
dynamic objects and is achieved by
virtual machines
how asp.net is different from asp.net
core
asp.net is used to build application for
windows whereas asp.net core is used for
windows mac os and linux
asp.net uses.net framework whereas
asp.net core uses dot net core framework
asp.net is a single version
asp.net core has multiple versions
what is catching
caching is a technique used to sort the
user data or information in memory
it boosts the performance of the
applications and creates pages
automatically
caching is also essential for data
related transactions
what is the role of page directives
page directives describe the attributes
of specific page file for the compiler
below is the syntax of page directives
where code file specifies the name of
code behind the file
and debug enables or specifies
compilation debug
and client name specifies the class name
of the page
and decline target browses the server
controls
list the types of states in asp.net
staten asp.net is used to store the
information between request and to
retrieve it when required and holding
the information
asp.net provides four types of states
application state cookie state view
state and session state
application state in this state all
collections of web pages and files in a
single directory on a web server
cookie state it stores the information
on the client machine view states
view state states the state of web pages
and its control
session state this state is used to sort
the application data
list the sources of data allowed by
asp.net
data sources are responsible for
operations like insertion deletion
sorting and updates some of the data
sources allowed by asp.net are sql data
source object data source and access
data source
list the events of calendar control
calendar control is a function used to
provide a calendar on a web page
it also enables you to change and move
to the previous months and years
the events of calendar control are of
three types selection changed day render
and visible month changed
what is a trace
tracing enables view diagnostic
information about a single request at
runtime and debug the application
the trace contains features backgrounds
code examples and class references
how can we add a style sheet in visual
studio
to add a style sheet open solution
explorer and right click on the option
then click on new and a pop-up will
appear to choose
how can a page layout help in asp.net
page layout provides an overall
container for the pages on the website
for example navigation area and footer
page layout also includes the main event
list the advantages of using html server
controls
html server controls are the standard
html controls used to enable server side
processing
some of the advantages of using html
server controls are
html server control does not possess any
mechanism to identify the capabilities
of a client browser coding can be easy
by adding run nut is equal to server
attribute
controls can interact with the client
side scripting
explain about event bubbling
even bubbling is used by data bound
controls when a parent control contains
child controls and when an event occurs
in the child controls it bubbles the
event to the parent this is called even
bubbling
even bubbling is classified into two
categories on bubble event that handles
the even data
rise bubble event that sends the event
data
list the most common built-in objects of
asp.net
built-in objects access the information
from the web server
it is also responsible for recognizing
the client who is accessing the web page
some of the commonly built-in objects of
asp.net are context application request
server trace and response
list types of caching
caching is a technique used to sort the
user data or information in memory
catching is divided into three types
output catching it specifies the
duration of catch and the attribute
fragment catching
it is user control caching used in a
basic web form page
data caching it is used for caching the
data of the data source controls
what are break points
breakpoint helps to specify the runtime
to run a line and stop the execution
it is used to examine and perform
various debugging functions and methods
now let us look at some of the advanced
level interview questions
list any five web controls in asp.net
web controls are html elements used for
script tagging and functionality for web
forms and pages
the five web controls in asp.net are as
follows
html controls html server controls user
and custom controls asp.net server
controls
asp.net ajax server controls
what are button controls
button controls in asp.net are used to
display a push button on a web page
this is the syntax for button controls
where you provide button id
and run at server and the text is of the
type button
what is range validator and its syntax
range validator checks the input values
that lie in between the specified ranges
the validator has three main properties
that is type minimum value and maximum
value
this is the syntax of range validator
wherein we have provided minimum value
as 1 and maximum value as 6 and it is of
the type integer
what is a thread priority
in multi-threading its thread has its
own priority that gains access to cpu
resources
whenever a thread is created in c sharp
it always possesses some priority
it is mainly used to set a value
what is the role of postback in asp.net
pushback is a request sent from a client
to the server from the page on which the
user is working
it pose the complete page back to the
server for a new page
postback is submitted to a server before
processing the page and holds
credentials such as verification like
username and password using a database
list the types of authentication in
asp.net
authentication is a process of ensuring
the user identity it is divided into
four types form authentication windows
authentication custom authentication and
passport authentication
define web configuration
web configuration is used to describe
the property and behavior of web
applications
it also helps to manage settings each
file of a web configuration is an xml
file that contains a set of
configuration elements
explain client-side script events
client-side script runs on the browser
and speeds up the execution of the page
some of the client-side events are as
follows
on click it is used when the control is
clicked on focus it is used when control
receives the focus
on change is used when the value of
control is changed
on blur is used when the control loses
focus
on key press is used when the user
presses the key
what is anonymous personalization
anonymous personalization helps and
allows the user to personalize this site
before identifying themselves for
example enable anonymous identification
by passing the value true
provide the cookie name cookie timeout
and cookie path
and set cookie sliding expiration as
true and keep the cookie protection
encrypted and cookie less is equal to
user
what is form-based authentication
form-based authentication is used to
edit the web configuration files and add
a login page to authenticate
it is used for web applications
form-based authentication also provides
a way to handle authentication using
custom logics in asp.net applications
define the types of configuration files
right
configuration files help to manage the
settings of a website settings of
configuration files are stored as xml
files which are separate from the
application
configuration files are of two types
web configuration and machine
configuration
web configuration contains the machine
specific value for all settings of the
applications
machine configurations help to extend
restrict and override the settings
list the different types of cookies used
in asp.net
cookies are a small piece of information
stored at the client side the cookies in
asp.net are provided into two types
session cookie valid for a single
session
persistent cookie valid for multiple
sessions
explain the difference between custom
controls and user controls
custom controls is designed for a single
application
whereas user control is designed for
multiple applications custom control is
loosely coupled user control is tightly
coupled
user interface can be changed in custom
control whereas in user controls the
user interface is fixed
then the difference between web
configuration and machine configuration
files
web configuration is automatically
created when application is created
whereas machine configuration is
automatically installed with the visual
studio
in web configuration file inherits
settings from the machine configuration
whereas in machine configuration only
one machine configuration exist
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