.NET Framework 1.1 was released by Microsoft on April 3, 2003. It is a software development platform that provides a comprehensive, secure, and consistent programming model for building applications. The framework includes a large class library known as Framework Class Library (FCL) and provides language interoperability across several programming languages.The .NET Framework 1.1 introduced several new features and improvements over its predecessor, .NET Framework 1.0. Some of the key features included:1. Improved performance: The .NET Framework 1.1 included performance improvements in areas such as garbage collection, just-in-time compilation, and overall application execution.2. Security enhancements: The framework introduced new security features, such as Code Access Security (CAS) and Secure Execution Environment (SEE), to help developers build more secure applications.3. Support for mobile devices: .NET Compact Framework, a subset of the .NET Framework, was introduced in version 1.1 to provide support for building applications for mobile devices.4. Improved debugging and profiling tools: The framework included enhancements to the debugging and profiling tools, making it easier for developers to diagnose and troubleshoot issues in their applications.5. Enhanced XML support: .NET Framework 1.1 included better support for XML processing, such as XML schema validation and XSLT transformations.6. Web services improvements: The framework included enhancements to the ASP.NET and web services support, making it easier for developers to build and consume web services.7. Data access enhancements: ADO.NET, the data access technology in the .NET Framework, was improved in version 1.1 with support for new features such as XML data integration and data caching.Overall, the .NET Framework 1.1 was a significant release that provided developers with a powerful platform for building a wide range of applications, from desktop to web and mobile. However, it is important to note that the .NET Framework 1.1 has reached its end of life and is no longer supported by Microsoft. Developers are encouraged to upgrade to newer versions of the framework, such as .NET Core or .NET Framework 4.x, to take advantage of the latest features and improvements.
