Which of the following is used to facilitate hierarchical scaling in OSPF?
- Autosummarization
- Frequent SPF calculations
- The election of designated routers
- The use of multiple areas
Explanation: OSPF supports the concept of using areas to prevent larger routing tables, excessive SPF calculations, and large LSDBs. Only routers within an area share link-state information. This allows OSPF to scale in a hierarchical fashion with all areas that connect to a backbone area.
Exam with this question: CCNA 3 v6 Chapter 9: Check Your Understanding
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