Question 1

Explain how garbage collection deals with circular referrences?

Accepted Answer

The Net runtime knows about all the references between the objects It can identify all the circular references that are reachable from the root and hence finalize them to free them all at once if and when needed

Question 2

What are type safe function pointers?

Accepted Answer

A delegate declares a ref type that references a named of anonymous method. Delegates are secure and type-safe.

Question 3

Which of the following are the debugging windows in .NET?

Accepted Answer

All the above listed are debugging windows in .NET

Question 4

Explain how garbage collection deals with circular references?

Accepted Answer

The Net runtime knows about all the references between the objects It can identify all the circular references that are reachable from the root and hence finalize them to free them all at once if and when needed

Question 5

What is the purpose of reserved word using in C#?

Accepted Answer

A keyword that specifies that types in a particular nemespace can be referred to without requiring their full qualified type names 'using' reserved word always come with namespaces eg using systems so because of this useful classes supplied by Microsoft which are contained by system namespace are availble for user

Question 6

Explain how garbage collection manages the reclamation of unused memory?

Accepted Answer

The garbage collector assumes that all objects in the managed heap are garbage It starts walking the roots and builds a graph of all objects reachable from the roots recursively It stops when it attempts to add an object to the graph that it previously added The graph contains the set of all objects that are reachable from the application's roots Any object/s that is not in the graph is not accessible by the application, and is considered garbage Collection only occurs when the heap is full In such a case, each and every garbage object calls the Finalize method and reclaims the unused memory

Question 7

Explain the process of creating a menu using the MainMenu component

Accepted Answer

MainMenu component is a component that allows the display of Menus at runtime on a form Process of creating Menu using MainMenu Component: a Add MainMenu component on Windows Form b Menu designer allows deciding the structure of the main menu by selecting the Type Here area and adding the Menu Items to be displayed on the menu c Add functionality to Menu Items as required

Question 8

Define Virtual folder.?

Accepted Answer

It is the folder that contains web applications The folder that has been published as virtual folder by IIS can only contain web applications

Question 9

Define Common Type System

Accepted Answer

Net allows developers to write program logic in at least 25 languages The classes written in one language can be used by other languages in Net This service of Net is possible through CTS which ensure the rules related to data types that all language must follow It provides set of types that are used by all NET languages and ensures NET language type compatibility

Question 10

What are the ways of preserving data on a Web Form in ASP.NET?

Accepted Answer

These objects provide two levels of scope: Application State Data stored in the application object can be shared by all the sessions of the application Application object stores data in the key value pair

Question 11

Explain how a web application works.

Accepted Answer

A web application resides in the server and serves the clients requests over internet The client access the web page using browser from his machine When a client makes a request, it receives the result in the form of HTML which are interpreted and displayed by the browser A web application on the server side runs under the management of Microsoft Internet Information Services (IIS) IIS passes the request received from client to the application The application returns the requested result in the form of HTML to IIS, which in turn, sends the result to the client

Question 12

How to set breakpoints?

Accepted Answer

Setting up the break points: Go to the line where you need to mark the breakpoint Click with mouse on left corner margin of that line Another way is to press F9

Question 13

What is assembly manifest?

Accepted Answer

Assembly Manifest is a file that contains data that describes how the elements present inside an assembly are connected to each other The assembly manifest contains assembly metadata to define the scope of the assembly and resolve references to resources and classes

Question 14

What is the information does assembly manifest provide?

Accepted Answer

Information provided by Assembly Manifest: Assembly Name Version Number Culture Strong name List of files inside the assembly Reference information

Question 15

Explain how a .NET application is compiled and executed?

Accepted Answer

Any code written in any NET complaint languages when compiled, converts into MSIL (Microsoft Intermediate Language) code in form of an assembly through CLS, CTS IL is the language that CLR can understand On execution, this IL is converted into binary code by CLR’s just in time compiler (JIT) and these assemblies or DLL are loaded into the memory

Question 16

Describe the .NET base class library

Accepted Answer

NET’s Base class library exists in order to encapsulate huge number of common functions and makes them easily accessible to the developer NET base class library provides the functionality like ADONET, XML, Threading, IO, Security, Diagnostics, Resources, Globalization, collections etc It serves as the main point of interaction between developer and runtime

Question 17

Explain the process of creating a context menu using the ContextMenu component

Accepted Answer

ContextMenu component provides the users with the ability to access some very frequently used commands Context menu works by right click of mouse They mainly provide access to commands particular to the control that has been clicked upon

Question 18

What is a delegate?

Accepted Answer

A delegate declares a ref type that references a named of anonymous method Delegates are secure and type-safe Consider them as type safe function pointers

Question 19

How to create a Delegate?

Accepted Answer

public delegate void Del(T item); Del d1 = new Del(Notify);

Question 20

Explain how to configure Trace switches in the application’s .config file.?

Accepted Answer

switches are configured using the config file both are on

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