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  1. EXE and DLL are file extensions used in Microsoft Windows environments to denote two types of executable files with different purposes:

    1. EXE (Executable) Files:
       - An EXE file, short for "executable," is a file format used to store programs that can be executed or run by the operating system.
       - EXE files contain machine code that is executable by the computer's processor. When you double-click on an EXE file, the operating system loads the program into memory and starts executing its instructions.
       - EXE files are commonly used for standalone applications that you run directly, such as word processors, web browsers, media players, and more.
       - Examples: `notepad.exe` (Windows Notepad), `chrome.exe` (Google Chrome), `winword.exe` (Microsoft Word).

    2. DLL (Dynamic Link Library) Files:
       - A DLL file, short for "Dynamic Link Library," is a file format used to store reusable code and resources that multiple programs can use simultaneously.
       - DLL files contain functions, classes, and resources that can be called upon by various programs. They allow software developers to modularize their code and share common functionality across multiple applications.
       - DLL files are not meant to be run directly like EXE files. Instead, they are loaded by applications when needed. This dynamic linking reduces code duplication and saves memory.
       - DLL files can also be used to provide system-level functionality to applications, such as accessing hardware or interacting with the operating system.
       - Examples: `user32.dll` (User Interface functions), `kernel32.dll` (Kernel functions), `msvcr120.dll` (Microsoft C Runtime Library).

     

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