Concept:The operating system manages computer hardware and software resources, but it does not serve web pages over the internet.
Explanation:Option A is a security job of the operating system, which uses file permissions to stop unauthorised access.
Option C is a core operating system duty, as it allocates memory to running programs.
Handling HTTP requests for Web pages is performed by web server software, such as Apache or Nginx, not by the operating system.
Therefore, the operating system is not responsible for Option B.
Answer:B. Handling HTTP requests for Web pages.