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What is a DLL?

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Quick Answer

The DLL file format stands for dynamic link library. It uses the ".dll" file extension and stores functionalities and modules required by programs and Microsoft operating systems.

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Using DLL files in programming is encouraged so that sections of codes can be contained in modules. Other programs can reuse these modules, leading to optimized memory usage, faster loading times and lesser disk space consumption. DLL files also introduce easier deployment, streamlined updates and support for multi-language and international versions of programs. However, programs that rely on DLLs are not self-contained and may not function properly when the DLL is missing or modified.

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