ASP.NET Interview Questions

Does .NET CLR and SQL SERVER run in different process?

Dot Net CLR and all .net realtes application and Sql Server run in same process or we can say that that on the same address because there is no issue of speed because if these two process are run in different process then there may be a speed issue created one process goes fast and other slow may create the problem.

What do you mean by three-tier architecture?

The three-tier architecture was comes into existence to improve management of code and contents and to improve the performance of the web based applications. There are mainly three layers in three-tier architecture. the are define as follows

(1)Presentation
(2)Business Logic

(3)Database

(1)First layer Presentation contains mainly the interface code, and this is shown to user. This code could contain any technology that can be used on the client side like HTML, JavaScript or VBScript etc.

(2)Second layer is Business Logic which contains all the code of the server-side .This layer have code to interact with database and to query, manipulate, pass data to user interface and handle any input from the UI as well.

(3)Third layer Data represents the data store like MS Access, SQL Server, an XML file, an Excel file or even a text file containing data also some additional database are also added to that layers.


When not to use Design Patterns

Do not use design patterns in any of the following situations.

• When the software being designed would not change with time.
• When the requirements of the source code of the application are unique.

If any of the above applies in the current software design, there is no need to apply design patterns in the current design and increase unnecessary complexity in the design.

When to use Design Patterns

Design Patterns are particularly useful in one of the following scenarios.

• When the software application would change in due course of time.
• When the application contains source code that involves object creation and event notification.

Benefits of Design Patterns

The following are some of the major advantages of using Design Patterns in software development.

• Flexibility
• Adaptability to change
• Reusability

What are Design Patterns?

A Design Pattern essentially consists of a problem in a software design and a solution to the same. In Design Patterns each pattern is described with its name, the motivation behind the pattern and its applicability.
According to MSDN, "A design pattern is a description of a set of interacting classes that provide a framework for a solution to a generalized problem in a specific context or environment. In other words, a pattern suggests a solution to a particular problem or issue in object-oriented software development.

What is IIS Metabase? How to edit IIS metabase? How to backup IIS metabase file?

IIS metabase is the repository of the configuration values that are set in the Internet Information Server (IIS). The IIS metabase in an XML file. It may be controlled through program or manually too.

In order to edit IIS metabase entries, the user needs to have administrative rights on the system. To do this, in run window, type "inetmgr". Browse to "Local Computer" and right click it. Click on "Properties". Select the "Enable Direct Metabase Edit" check box.

Many times, due to the existence of multiple versions of .NET framework, some settings in the IIS metabase may get affected and cause your program not to run. For such scenarios, you may take a backup of the IIS metabase XML file and recover it. To create a portable backup, open run window and type "inetmgr". Next browse to "Local Computer" and go to "All Tasks". Next, click on Backup/Restore Configuration. Next, click on "Create Backup". In the textbox box for Configuration Backup name, type a name for your backup file. Also select the encrypt backup option and type a password. To finish the process, click "OK".