Which of the following software does not require user installation? A. Executable files B. Portable software C. Mobile software D. Network operating system

Breakdown of the Problem

1. Identify which options pertain to software that does not require installation.
2. Evaluate the characteristics of each software category.

Relevant Concepts

• Executable Files: Typically need installation on the operating system to run.
• Portable Software: Designed to run without installation; can be executed directly from a USB drive or other external media.
• Mobile Software: Generally requires installation on a mobile device, although some may allow for direct use.
• Network Operating System: A complete system that operates on a network and typically requires installation.

Analysis and Detail

1. Executable Files: Most, if not all, executable files require installation on a system.
2. Portable Software: This type of software indeed can run without being installed on the host computer. It is intended for mobility and ease of use.
3. Mobile Software: This software usually runs on mobile devices but typically requires an installation from an app store.
4. Network Operating System: This is a comprehensive system requirement for network management, meaning installation is essential.

Verify and Summarize

Among the given options, only portable software can be run without the need for installation. The other categories mentioned either require installation or are used differently than as stand-alone applications.

Final Answer

B. Portable software does not require user installation.