Proxy interview questions and answers

1)What is proxy ?

It is a server application acts as a middleware between client and server

Using proxy you can connect to the internet server.

Want to hide your home IP address you can use proxy.

In market different kind of proxies available.

2)How did we see or set proxies settings in chrome?

For google chrome 

-----------------------

Open chrome browser on top right,click on->"Customize and control Google Chrome"->Click "Settings"

->in "Search Settings"->Type "xy" ->click"Open your computer's proxy settings" ->you can set up proxy here

3)What is ForwardProxy?

It is also known as internet-facing proxy.

It is used to retrieve data from different web servers behalf of the client request and send response back to the client

Its performing other activities like load balancing , privacy and security.

4)What is ReverseProxy?

It is also known as internal-facing proxy.

Here request comes to webserver or transferred to another webserver , second webserver is responsible for retrieving the data and giving response back to client in same way.

Its performing other activities like TSL encryption, Caching,load balancing , privacy and security.

Its controls the accessing of the server.          

5) What is TunnelProxy or GatewayProxy?

The proxy which is transforming the information as it is without any changes is known as Gateway or Tunnel proxy. 

6)What is ApplicationModel in project?

Except UI everything comes under Application Model.

ApplicationModel includes any services your project using , DomainModel and database interactions.

7)What is DomainModel in project?   

DomainModel contains complex business logic built with service classes that is not depend n anything.

DomainModel easily testable.

8) What is ViewModel in project ?

ViewModel is responsible for rendering view of the application.

9) What is APIModel in project?

API model contains only the data to return, Generally WebAPI model contains this models.

The difference between ViewModel and APIModel is ViewModel return the data along with additional information.

10) What is the order of different models in project in MVC?

BindingModel

        |

ApplictionModel

        |

ViewModel

11)What is the Hackable URL's?

Able to guess the URL's based on previous visited URL's is known as hackable URL's.

12) What are the precautions needs to take if application has file uploads?

Always file uploads pave the carpet to intrude malicious code so that needs to take bit precautions. Some of them are listed below

-Filename is not reliable always, Once file uploaded into the server change filename save in respective location.

-Always consider the file size . Heavy file size definitely hit the application performance.

-Dont allow files to be run on server side.

  

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