Go back to 640-816 - ICND2 - Interconnecting Cisco Networking Devices Part 2

Question :-

Which of the following describe the process identifier that is used to run OSPF on a router? (Choose two)
It is locally significant.
It is globally significant.
It is needed to identify a unique instance of an OSPF database.
It is an optional parameter required only if multiple OSPF processes are running on the router.
All routers in the same OSPF area must have the same process ID if they are to exchange routing information.

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