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Tuesday, 15 September 2015

VB.Net job Interview Questions and Answers for fresher and experienced pdf

41. What is the difference between system.string and system.stringbuilder classes?
System.string is immutable, system.stringbuilder was designed with the purpose of having a mutable string where a variety of operations can be performed.

42. What is the use of jit ?
JIT (just - in - time) is a compiler which converts msil code to native code (ie. cpu-specific code that runs on the same computer architecture).

43. What is the difference between early binding and late binding?
calling a non-virtual method, decided at a compile time is known as early binding. calling a virtual method (pure polymorphism), decided at a runtime is known as late binding.

44. Which method do you invoke on the dataadapter control to load your generated dataset with data?
dataadapter’s fill () method is used to fill load the data in dataset.

45. What is the purpose of an assembly?
An assembly controls many aspects of an application. the assembly handles versioning, type and class scope, security permissions, as well as other metadata including references to other assemblies and resources. the rules described in an assembly are enforced at runtime.

46. What is authentication and authorization?
Authentication is the process of identifying users. authentication is identifying/validating the user against the credentials (username and password).
authorization performs after authentication. authorization is the process of granting access to those users based on identity. authorization allowing access of specific resource to user.

47. What are the types of authentication?
There are 3 types of authentication.
windows authentication
forms authentication
passport authentication.

48. What is a literal control?
The literal control is used to display text on a page. the text is programmable. this control does not let you apply styles to its content.

49. What are the namespace available in .net?
Namespace is a logical grouping of class.
system
system.data
system.io
system.drawing
system.windows.forms
system.threading

50. What is side-by-side execution?
The clr allows any versions of the same-shared dll (shared assembly) to execute at the same time, on the same system, and even in the same process. this concept is known as side-by-side execution.

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