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.

• A. 1, 2 and 4
• B. All of these
• C. 1 and 3
• D. IS-IS
• E. 3 and 5

Answer: (C)