hello can u answer my questions please ? i have last 30 minutes

Essential activity in the interrupt handling procedure (ie., the activity for which the interrupt is issued) consists in: Select one or more: a. saving the context of the interrupted process b. blocking the process to wait for the next interrupt c. unlocking the process waiting for this interrupt d. unlocking the process to handle this interrupt at a higher level of abstraction 2 Context switch is: Select one or more: a. writing registers to the task stack and retrieving them from another task stack b. extracode execution c. switching to the system stack d. calling the kernel of the operating system 5 A process always transitions from the "user" state to the "system" state as a result of: Select one or more: a. A software interrupt that calls a system function b. Hardware interrupt c. Debugger trap d. Process suspension 6 On UNIX, the following items are included in the system data of a process: Select one or more: a. Process open files table b. Indicators of the current position in open files c. Environment variables d. Current directory