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What is the required file extension for an ASP.NET Web Service?

Posted By :Amit Mehra     Posted Date :August 05, 2009    Points :10   Category :ASP.Net 
.wsdl

You can also find related Interview Question to What is the required file extension for an ASP.NET Web Service?  below: 

Name the two classes are required for implementing a Windows Service?

  
The following two classes are required for implementing a Windows Service:

· System.ServiceProcess.ServiceBase

· System.Configuration.Install.Installer (More...)

What is a Web service extension and how do you use the Web Service Extensions folder.

  
The Web Service Extensions folder is the user interface for the new IIS 6.0 lockdown feature. This feature is a manifest of ISAPI extensions and CGIs with user-specified permissions, meaning, administrators must set the permissions to allow specific ISAPIs and CGIs to run on your server. Administrators can also specify the names of ISAPIs or CGIs that are forbidden to run on your server. Before loading an ISAPI extension .dll file or CGI .exe file, IIS checks this manifest for the permissions on the file. If the file is permitted to run, then the request proceeds normally. If the file is not permitted to run, then IIS returns a 404.2 error response to the client machine. The HTML page for a 404.2 error looks like a standard 404 error page, so the client machine processes the request as though the file did not exist. IIS logs the 404.2 error, which administrators can view to assess problems or potential threats against the server. (More...)

what is used to execute a .net file from the command prompt ?

  
csc is C# compiler abbreviation is C Sharp Compiler (More...)

Disadvantage in File Processing System?

  
1.Data redundancy & inconsistency.
2.Difficult in accessing data.
3.Data isolation.
4.Data integrity.
5.Concurrent access is not possible.
6.Security Problems. (More...)

What is extension and intension?

  
Extension :-
It is the number of tuples present in a table at any instance. This is time dependent.

Intension :-
It is a constant value that gives the name, structure of table and the constraints laid on it. (More...)

What is an Extension of entity type?

  
The collections of entities of a particular entity type are grouped together into an entity set. (More...)

Where is window Service Entries located in the system

  
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services (More...)

What is the Transport Protocol you use to call a Web Service ?

  
SOAP (Simple Object Access Protocol) is the preferred protocol. (More...)

What is SQL Server Service broker?

  
Service Broker is a unique feature in Microsoft SQL Server 2005 which is used to by internal or external processes to send and receive guaranteed, asynchronous messages by using extensions to Transact-SQL Data Manipulation Language (DML).

It's a platform for building a new class of loosely coupled services for database applications. Service Broker not only brings asynchronous, queued messaging to database applications but significantly expands the state of the art for reliable messaging.

The key components of SQL Server Service broker are
.Queue stores the messages for a particular service.
.Dialog is a conversation between two services.
.Conversation group is a group of related conversations. Every conversation belongs to exactly one conversation group.
.Activation specifies a stored procedure that will handle messages destined for a particular service. (More...)

What are the essential components of SQL Server Service broker?

  
Queues
Service Broker uses queues to provide loose coupling between the message sender and the message receiver. The sender can put a message in a queue and then continue on with the application, relying on Service Broker to ensure that the message reaches its destination. Queues permit a lot of scheduling flexibility.

Dialogs
Dialogs are bidirectional streams of messages between two endpoints. All messages in a dialog are ordered, and dialog messages are always delivered in the order they are sent. The order is maintained across transactions, across input threads, across output threads, and across crashes and restarts.

Conversation Groups
It's a way of grouping all the dialogs that are used for a particular task. All the dialogs associated with processing a particular order would be grouped into a single conversation group. The conversation group is implemented as a conversation group identifier, which is included with all messages in all dialogs contained in the conversation group. When a message is received from any of the dialogs in a conversation group, the conversation group is locked with a lock that is held by the receiving transaction. For the duration of the transaction, only the thread that holds the lock can receive messages from any of the dialogs in the conversation group. This makes our order entry application much easier to write because even though we use many threads for scalability, any particular order is only processed on one thread at a time. This means we don't have to make our application resilient to problems that are caused by the simultaneous processing of a single order on multiple threads.

Activation
You use the activation feature of Service Broker to specify a stored procedure that will handle messages destined for a particular service. When messages arrive for a service, Service Broker checks whether there is a stored procedure running that can process the messages. If there isn't a running message-processing stored procedure, Service Broker starts one. The stored procedure then processes messages until the queue is empty, after which it terminates. Moreover, if Service Broker determines that messages are arriving faster than the stored procedure can process them, it starts additional instances of the stored procedure until enough are running to keep up with the incoming messages (or until the configured maximum number is reached). This ensures that the right number of resources for processing incoming messages are always available. (More...)

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