DOT NET Interview Questions - DotNetSpider

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√ Just before shipping, you submit the assembly to your organization's signing authority for the actual strong name signing using the –R option with the Strong Name tool.The following example signs an assembly called myAssembly.dll with a strong name using the sgKey.snk key pair. Sn -R myAssembly.dll sgKey.snk (B)What is garbage collection? Garbage collection is a CLR feature which automatically manages memory. Programmers forget to release the objects while coding ..... laziness ( Remember in VB6 where one of the good practices is to set object to nothing).CLR automatically releases objects when they are no longer referenced and in use.CLR runs on non-deterministic to see the unused objects and cleans them. One side effect of this non-deterministic feature is that we cannot assume an object is destroyed when it goes out of the scope of a function. Therefore, we should not put code into a class destructor to release resources. (I) Can we force garbage collector to run ? System.GC.Collect() forces garbage collector to run.This is not recommended but can be used if situations arises. (B)What is reflection? All .NET assemblies have metadata information stored about the types defined in modules.This metadata information can be accessed by mechanism called as “Reflection”.System.Reflection can be used to browse through the metadata information. Using reflection you can also dynamically invoke methods using System.Type.Invokemember.Below is sample source code if needed you can also get this code from CD provided , go to “Source code” folder in “Reflection Sample” folder. Public Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim Pobjtype As Type Dim PobjObject As Object Dim PobjButtons As New Windows.Forms.Button() Pobjtype = PobjButtons.GetType() For Each PobjObject In Pobjtype.GetMembers LstDisplay.Items.Add(PobjObject.ToString()) Next End Sub End Class 32
Note :- Sample source code are compiled using VB.NET 2005. Figure:- 1.9 Sample reflection display Sample source code uses reflection to browse through “Button” class of “Windows.Forms”.If you compile and run the program following is output as shown in “Sample Reflection Display”.Using reflection you can also dynamically invoke a method using “System.Type.InvokeMember”. Note :- System.Type.InvokeMember is left as homework for readers.Believe me you will enjoy doing it yourself and the concept of reflection will be more clearer. (P)What are different type of JIT ? Note :- This question can only be asked when the interviewer does not know what he wants.It was asked to me in one of interview and for 15 minutes he was roaming around the same question in order to get answer from me (requirement was for a simple database project). Beware of such companies and interviewers you can land up no where. JIT compiler is a part of the runtime execution environment. In Microsoft .NET there are three types of JIT compilers: 33
Page 1 and 2: Beta Release 1.0 DOT NET Interview
Page 3 and 4: How can we use COM Components in .N
Page 5 and 6: Can you show a simple code showing
Page 7 and 8: What’s the use of @ Register dire
Page 9 and 10: I want to force the datareader to r
Page 11 and 12: Who is a stakeholder ? ............
Page 13 and 14: √ √ √ .NET interviewers who a
Page 15 and 16: Note While reading you can come acr
Page 17 and 18: √ Project Manager are expected to
Page 19 and 20: Microsoft introduced Common Type Sy
Page 21 and 22: Visual Studio .NET 2003\SDK\v1.1\Bi
Page 23 and 24: (A) What is Manifest? Figure :- 1.2
Page 25 and 26: √ Go to “Visual Studio Command
Page 27 and 28: Figure:- 1.7 Click on project and t
Page 29: (B) What is Delay signing ? During
Page 33 and 34: (B) What’s difference between VB.
Page 35 and 36: (I)What is a satellite assembly? In
Page 37 and 38: √ √ √ Using Type library impo
Page 39 and 40: √ The second way to create CCW us
Page 41 and 42: √ Type is the return type of the
Page 43 and 44: pDesired) checks to see if the curr
Page 45 and 46: √ √ Figure :- 2.3 Add reference
Page 47 and 48: There are 5 transactions types that
Page 49 and 50: Binary Compatibility VB makes it po
Page 51 and 52: Private Sub Form1_Load(ByVal sender
Page 53 and 54: the .NET runtime determines that it
Page 55 and 56: SyncLock x 'Do something with x End
Page 57 and 58: (I) How can you avoid deadlock in t
Page 59 and 60: Figure :- 4.2 Channels,Formatters a
Page 61 and 62: Implements InterFaceRemoting.InterF
Page 63 and 64: Console.WriteLine(“Referenced the
Page 65 and 66: √ By Keyword “New”. (A) Are C
Page 67 and 68: When total object lifetime is reduc
Page 69 and 70: mode=”SingleCall” type=”Serve
Page 71 and 72: Non-Default constructors can not be
Page 73 and 74: (B) What is UDDI ? Full form of UDD
Page 75 and 76: Figure :- 4.8 Create Web project me
Page 77 and 78: Figure :- 4.9 Create WebService Pro
Page 79 and 80: Figure :- 4.11 Click on Add Web Ref
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Figure :- 4.13 Solution showing the
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√ Finally you are able to see you
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Webservices as such do not have any
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(P)Can you show a simple code showi
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√ √ VaryByCustom:-Lets you cust
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√ By default Session objects are
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√ View state is good for caching
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√ All browsers support query stri
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Abstraction It allows complex real
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Public Class ClsChild Inherits ClsP
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Public Class ClsChild Inherits ClsA
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(A) What is difference between abst
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Public Class FrmWithEvents Inherits
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Figure :- 6.6 Shadowing in Action (
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(I) Why can not you specify accessi
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Figure :- 6.7 Shared/Static In Acti
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It provides a way to define and use
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Figure :- 6.8 Garbage collection in
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instance and be used with out creat
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(B) How do we assign page specific
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CustomValidator Used to define User
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can say the following authenticatio
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Digest authentication requires that
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With this setting, all the requests
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√ ASP.NET supports full language
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Application_PreSendContent: Fired b
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WebUIValidation.js javascript file
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√ √ √ .ashx, for custom ASP.N
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The above mapping shows which funct
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(I)How do you upload a file in ASP.
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Figure: - 7.5 High isolation scenar
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√ Remove anonymous access to the
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(I)What are the steps to create a w
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8..NET Architecture (B) What are de
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The below two class diagrams will p
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(I)What’s MVC pattern? Twist: - H
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√ First create your class with st
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√ √ Payment Invoicing All the f
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interfaces of these components. SOA
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web service. Both these services ar
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(A)What is aspect oriented programm
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encapsulation. In short the class n
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Public Property UserName() As Strin
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pstrCustcode = Value End Set End Pr
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End Property Public Property NewVal
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9. ADO.NET (B)What is the namespace
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“DataView” object is used to so
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made to the data in the original da
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First below is the code , after the
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Figure :- 9.3 Load only the Employe
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objCommand = New SqlCommand(“Sele
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Config files are the best place to
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Dataset has “AcceptChanges” met
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Delete Deletes the specified row fr
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preferred way of locking practicall
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10. SQL SERVER (B) What is normaliz
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Figure :- 10.4 City is now shifted
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(I)What are indexes and What is the
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(A)What are fact tables and dimensi
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(B)What are the problems that can o
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REPEATABLE READ This setting disall
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prudent to do so is another story;
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UNION SQL syntax is used to select
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(I) What is ACID fundamental and wh
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Figure :- 10.6 DBCC SHOWCONTIG comm
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BCP (Bulk Copy Program) is a comman
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√ AFTER triggers AFTER triggers e
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(B) What is UML? 11. UML The Unifie
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high level, what components form pa
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This should be compulsory diagram a
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Figure :-11.1 Phase mapping with UM
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√ √ √ Object satisfies a cond
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2-Element Constraint: - It shows a
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(A) Explain all parts of a deployme
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(A) Describe various components in
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(A) What are the element in State C
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(A)Describe different elements in S
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Trace: - Indicates historical relat
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Extends: - Indicates that the eleme
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(B) Who is a stakeholder ? Figure :
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writing a book i will have followin
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software development model you will
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Incremental Model In this model we
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√ √ √ Function points Use Cas
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Twist :- What is 80/20 principle ?
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workflow metrics √ walkthrough me
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√ revisions metrics version contr
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√ 13. Free exams (Thanks to www.m
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