MCPD Certification

The Component Services tool creates, configures, and maintains a COM+ application. This tool can be used to view the system events, manage the system services and the distributed transactions. This tool performs the four tasks.

The COM+ transaction attributes are as follows:

• Required
• RequiresNew
• Disabled
• Supported
• Not Supported

Use the Platform Invocation Service and COM Interop Service to provide interoperability with the unmanaged code.

In a SingleCall object, a new object is created whenever a message arrives. The new object then processes the message and returns an optional reply. Finally, the object created is discarded.

Assembly Registration (Regasm.exe) tool is used to read the metadata within an assembly. It also adds the necessary entries to the registry allowing a COM client to create .NET Framework classes. Once a class is registered using Regasm.exe, a COM client can use it as a COM component.

COM components can be used in applications by adding a reference to a type library.

Strong name is a name consisting of an assembly’s identity, public key, and digital signature. It includes the assembly’s name, version number, and other related information (if any).

Use the Visual Studio 2005 IDE and Tlbimp.exe tool to import a COM type library to the Microsoft .NET Framework.

Deploying an assembly on COM application to a client computer using the Assembly Registration Tool (Regasm.exe) and register the file on the client computer.

Deploy a Client and a component to a single folder on multiple client computer by using COM Type Libraries.

The assemblies that contain culture-neutral resources are referred to as satellite assemblies. These assemblies are used to deploy language-specific resources for an application.

Caspol.exe can be used to examine and modify Machine-level, User-level, and Enterprise-level code access security policies.

The MarshalByRefObject class allows access to objects across application domain boundaries in applications that support remoting.

The dumpbin.exe utility is a command-line tool used for viewing imports and exports. It allows users to view various details for a given unmanaged code.

The Type Library Importer (Tlbimp.exe) tool is used to convert the type definitions from a COM type library into equivalent definitions in a common language runtime assembly.

The IsCallerInRole method of the ContextUtil class determines whether the client is having the specific role or not.

Web references refer to XML Web services that are published on either a local intranet or the Internet.

The Regsvr32.exe tool is used to register or un-register dynamic-link libraries (DLLs) and ActiveX controls (OCX) in the Windows Registry.

The Strong Name (Sn.exe) tool is used to sign assemblies with strong names. It also provides signature generation, signature verification, and key management.

The Common Language Runtime finds the assembly through the codebase setting. If no match is found in the location as specified in the codebase element in the application configuration file, the binding request fails. Then the CLR finds the assembly through probing.

The following are the different approaches on how the correct version of an assembly is specified in the assembly manifest:

1. Include the AssemblyVersion() attribute in an application’s source code.
2. Update the AssemblyVersion() attribute in the AssemblyInfo file of an application.
3. Include the System.Reflection namespace in the project when the AssemblyVersion() attribute is included in the application’s source code.

The Sn.exe tool is used to sign a portable executable file for a component or an assembly with an Authenticode digital signature.

Use a method in an application code and the method of the Assembly class to load and examine many assemblies having the same identity but located in different paths.

Use the following classes to construct email messages:

• Attachment
• MailAddress
• MailMessage

The WebResponse class derived from the System.Net namespace is used to provide a response from a Uniform Resource Identifier (URI).

The WebRequest class derived from the System.Net namespace is used to make a request to a Uniform Resource Identifier (URI).

The MailAddress class specifies the source and destination email address in two different objects.