Devices are required to adhere to a protocol so the interrupt-request (IRQ) strains is often shared. The PCI bus involves 4 interrupt traces, INTA# via INTD#, all of which are offered to each system. As much as eight PCI products share exactly the same IRQ line (INTINA# via INTINH#) in https://nathanlabsadvisory.com/cism-certified-information-security-manager/