Q. What is the purpose of Manifest file. What are all its contents?

 It gives the Information about the Assembly, such as Assembly Name, version, External Resources required for this Assembly.

Q. How will you share your assembly, so that others can make use of it?

By deploying the Assembly in GAC.

Q. How can I use the assembly present in GAC?

By Refering that Assembly.

Q.  Can I see the assembly code in the assembly? Diff types of assembly

Using Ildasm Utility we can see the Assembly Code.

Q. Is there any performance difference between C# and vb.Net?

 No difference. Comparetively C# is faster.

Q. what are types of authentication given in .Net?

Windows  :

Forms :

Passport  :

Q. Can I deploy .Net components in MTS?

No

Q. Whether MTS is necessary for .Net components,In which situations, we need to deploy our .net components in MTS?

Not Needed

Q. What are types of authentications found in IIS ?

 Anonymous: Allow All users

 Basic     :  Username and Passwords are transmitted across the network without encryption.

 Digest    :

 Integrated Windows:

Q. Explain the SDLC cycles. Which phase is more important?

Answer:

            Requirements Analysis and gathering

            Design (HLD and LLD)                       

            Coding

            Testing

            Acceptance and Implementation

All the Phases are equally Important when develping an system but Requirements Analysis is a bit crucial  in the process.

Q. What are types of models we use for development?

 1,WaterFall

 2.Modified waterFall

 3.Spiral

 4,RAD

5.V Model

Q. What are types of built-in security authentications available in .Net?

Answer:

             1.Windows Authentication

             2.Forms Authentication

             3.Passport Authentication

Q. Difference between com and DLL?

Answer:

        Com is a set of specfication or guidelines for developing resuabled components for microsoft platform.

        It also provides set of services in the form of Common Object Library.

        DLL is Reusable piece of Code.

Q. In .Net,a=0,b=0 what will happen if i say a/b

Answer:

        Arithmetic OverFlow Exception will occur.

Q. How session variable can be blocked for changes, with in the single page ?

         In .Net:

         Using page directive EnableSessionState=ReadOnly

Q. what is purpose of server.Mappath?

            To get Physical path of the Application

Q. What is  Global.asa?

            - Common file used in web applications for Declaring Application Level Variables

            - Session level events  and applcation level Events can also be  declared.

Q.  How web.Config file differs from Global.asax?

Answer:

            In Web.config

                    - We can specify the Application settings 

                    - we can specify how sessions can be handled for that application.

            Global.asax file can be used to specifiy session and Application event handler.

Q. Explain difference between class and structure?

            Structure is a Value Type and Class is Reference Type.

Q. What is boxing and unboxing?

Answer:

            Boxing is the Process of converting the Value type to Refernce Type.

            For Example ,

                        Dim i as integer = 100

                        Dim Myobj as object

                        Myobj = i

            UnBoxing is the Process of Converting the Refernce Type to Value Type.

Q. write code for databinding you have to bind data from the db to the datagrid?

    Dim da as sqlDataAdapter

    Dim ds as dataset    

    Dim strsql as string

            strSQL = " select colum1,column2  from BAP_users where Active_flag='Y' "

    con.open()

    da = new sqlDataAdapter(strsql,con)           

    Dim ds as new dataset         

   da.fill(ds,"users")       

   mydatagrid.datasource = ds

   mydatagrid.databind()           

Q. How to associate .aspx file and .cs file.Here which class is inheriting from which class?

          .aspx is inheriting form .cs file.

           Code Behind is inherited from Page Class         

Q. why can't we use MSAccess instead of Oracle and SQL server?

            Not Supporting the Stored Procedures and Triggers.

            Not Secured.               

Q. How many types of command objects  are there in .Net?

Answer:

            3 Types .

                        1.ExecuteScalar - Will return the first column of the first result sets.

                        2.ExecuteNonQuery -  Used for DML Commands such as Insert , Update and Delete  and Will not Return any Value

                        3.ExecuteReader - Will return a Refernce to the DataReader Object

Q. What will be the connection string if you use windows integrated authentication/

  Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=dbname;Data Source=servername

  SSPI=SecurityServiceProviderInterface

Q. what are the types of constructors available for DataAdapter?

     4 Types

            1. No  Arguments

            2.Command Object

            3.Sql , Con object

            4.Sql, con string

Q. When the Garbagecollector will do the Collection?

            GC is a Low priority Thread Running.

            When the Systems Process Memory come low this will become High Priority and Starts Removing the Objects.

Q. How GarbageCollector knows about the unscaped objects?

            Based on Algorithm.

             Recently used Objects

 Least used Objects.

Q. what are all the Different steps involved in deploying a assembly in GAC ?

1. Creating a strong Name using SN.exe

2.  Give that name in Assemblyinfo files AssemblyKeyfilename attribute

3. using gacutil utility place the Assembly in the GAC

Q. Can multiple  versions of  a assembly reside in the GAC ? if so how it is possible ?

 Q. what is CLR? What its roles ?

Q. What is CTS ?

 Q. What CLS ?

Q. Can you use a COM component developed in VB in .NET ?

Q. About CCR and RCR (Com callable wrapper and Runtime Callable Wrapper)

Q. What is DOT NET Framework?

Q. What is MSIL?

Q.  What is JIT? What it does?

Q. An Component is developed using C#.NeT can it be used with an application developed with VB.NET?

Q. what is  .NET Remoting?

 Q. what is tracing ?

Q. Some namespaces in .NET

Q. what is reflection?