Hello can u help me with this questions please

i have last 30 min

What does the kernel do when there is no task (process) to run? Select one or more: a. starts the idle task b. resets the entire system c. switches off the power supply d. executes an infinite loop in the kernel until a task arrives Q2 What is included in the context that must be saved for a synchronous (inter-instruction) precision interrupt? Select one or more: a. program counter b. collective of individual interrupt mask c. general purpose registers d. instruction register Q3 What does memory virtualization for 1/0 allow? Select one or more: a. execution of guest drivers in virtualizer mode b. using the addresses of the entire address space in DMA transmissions c. directing the interrupt handling directly to the driver contained in the guest OS d. direct programming of the DMA channel by the driver included in the guest syster e. resignation from copying transmission areas for the input/output operations Q4 In the SSFT (to nearest) optimization algorithm, what will be the order of transmission execution with the given current position of the head and the order of transmission requests according to the numbers in the figure (arrow positions indicate the cylinder to which the request is made, the white arrow indicates the previous transmission made, and the red arrow currently being executec)? The answer should be given as request numbers in the order in which they will be executed, for example, if they were in the order of requests: 123456