Concept:Process ID (PID)This is a unique number that helps in identifying a hardware product or a registered software product.It identifies each running processes in an operating system.IP addressAn IP address is a unique address that identifies the device on the internet or a local network.IP stands for the Internet Protocol which is having the set of rules governing the format of data sent via internet or local network.This is differentiated into different classes based on the width.SYSIDThe SYSID file records the network interface addresses that the File Server registers in the volume location Database for the local file server machine.Each time the File Server restarts, it builds a list of interfaces on the local machine by reading the /usr/afs/local/NetInfo file, if it exists.Conclusion:IP address is the identification number given to the computer connection to a network .