This question is about interrupt and has "multiple correct answers". Select the correct answers.

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Once the processor detects an interrupt request, the computer pushes the PC and the flags into the hard drive to preserve them.

Processor at each computer clock cycle checks the interrupt request signal.

The addresses of the interrupt services are stored in the CD ROM that is connected to the computer, which allow the CPU to jump to different interrupt services.

Once the processor detects an interrupt signal, it generates an interrupt acknowledge cycle to identify the interrupting device, which allows it to access the interrupt service address from a table.

Different I$/$O device controllers can send interrupt requests at the same time but the processor will execute only one interrupt service at a time.

Operating system is interrupt$-$driven, which allows the CPU to operate concurrently with the I$/$O devices. Otherwise the CPU has to check the status of the I$/$O devices in a polling mode.