"MUS" is not a recognized operating system abbreviation in common use. Operating systems are software programs that manage computer hardware and provide services for computer programs. Examples of well-known operating systems include Windows, macOS, Linux, and Unix. "MUS" does not correspond to any widely used operating system.

1. Booting is a type of start-up sequence that starts the computer's operating system when the system is switched on.

2. This process involves some set of operations, which are performed when the computer is switched on. Knowing the boot sequence is important for optimizing and troubleshooting the computer.

3. It can be initiated by hardware such as a button press, or by software commands.

4. After it is started, there is no software in the main memory of the computer's central processing unit (CPU), so the software must be loaded into memory before it can be executed by some process.

1. SSO (Single Sign On) has legitimate purposes.

- One person, one identity – with all mapped data sets and documents for every state resident

- Documents and affidavits are not required for service delivery

- Single window interface to access various digital services of state government departments

1. An operating system is not HP.

2. The full name of HP is Hewlett-Packard. It is an American multinational information technology company that manufactures and sells computer hardware, software, and services.

1. Device driver is a type of system software, which helps in running any hardware connected to the computer.

2. Device driver is also called computer driver, or hardware driver.

3. It helps different computer hardware to communicate with the operating system.