What is the purpose of the Executable and Linkable Format (ELF)?

The Executable and Linkable Format (ELF) serves as a standard file format for executable files, object code, and shared libraries, particularly in Unix and Unix-like operating systems. It allows for modularity and flexibility in the development and execution of programs. By using ELF, developers can create files that can contain different types of information such as the program's machine code, data segments, and information necessary for linking and loading. This standardization enhances interoperability between systems, allowing programs compiled on one system to potentially run on another if they support ELF.

Additionally, ELF files incorporate various sections that provide necessary metadata, such as system calls and library dependencies, facilitating the correct execution of programs. This modular design supports dynamic linking and execution, making it an essential part of modern operating systems' architecture. Other options don't match this purpose as they relate to audio formats, image processing, or network protocols, which are fundamentally different areas within computer science and technology.