Which of the following describe the process identifier that is used to run OSPF on a router?
1.It is locally significant.
2.It is globally significant.
3.It is needed to identify a unique instance of an OSPF database.
4.It is an optional parameter required only if multiple OSPF processes are running on the router.
Answer: B
The Process ID for OSPF on a router is only locally significant and you can use the same number on each router, or each router can have a different number-it just doesn't matter. The numbers you can use are from 1 to 65,535. Don't get this confused with area numbers, which can be from 0 to 4.2 billion.