Which of the following statements is false about the graphical user interface (GUI) and the...

According to the Huawei HCIA-Cloud Computing training materials, statement D is FALSE. In the Linux operating system, permissions are determined by the User ID (UID) and the specific privileges of the account logged in (such as the root user), not by the type of interface being used. Whether an administrator uses a Graphical User Interface (GUI) or a Command-Line Interface (CLI), the ability to modify the kernel or change system files is strictly governed by the OS's access control lists and kernel-level security modules. In many enterprise cloud environments, such as those running Huawei’s EulerOS, the GUI is often not even installed to reduce the attack surface and save resources.

The other statements are technically correct. Statement A is true because the CLI allows for automation through scripting, making it far superior for routine maintenance and batch processing. Statement B is true because a GUI requires a display server (like X11 or Wayland) and a desktop environment, which significantly increase CPU and memory overhead compared to the text-based CLI. Statement C is true because an experienced administrator can execute complex tasks with a few keystrokes in the CLI much faster than navigating multiple windows and menus in a GUI. In the official curriculum, it is emphasized that for cloud data centers, the CLI is the primary tool for O&M (Operation and Maintenance) because it provides a direct, high-performance link to the system shell. The idea that a GUI provides "higher permissions" is a common misconception; in fact, critical kernel modifications are almost exclusively performed via the CLI or system configuration files to ensure precision and auditability.

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