Question 25

.dmg files require mounting before installation.

.dmg files, or disk image files, must be mounted to access their contents before installation. This process allows users to interact with the file system within the image, making it necessary for installation.

A) .pkg

.pkg files are package files that can be directly installed by double-clicking them. They do not require any mounting process as they are self-contained installers that can be executed immediately.

B) .zip

.zip files are compressed archives that need to be unzipped to access their content, but they do not require mounting. Users can extract the files using built-in utilities or third-party applications without any additional steps.

C) .app

.app files are application bundles that can be run directly without any mounting process. They are essentially folders containing all necessary files and can be executed directly from their location in the file system.

D) .dmg

.dmg files are specifically designed to be mounted on the macOS operating system. When a user double-clicks a .dmg file, it mounts as a virtual disk on the desktop, allowing access to the files within, which may include applications or installers for further setup.

Conclusion

The only file type that requires mounting before installation is the .dmg file, which must be mounted to access its contents. In contrast, .pkg, .zip, and .app files can be used or installed directly without any mounting process, making them inappropriate answers to the question.