CCNA: Cisco Certified Network Associate — Question 210

Which statements describe the routing protocol OSPF? (Choose three.)

Answer options

• A. It supports VLSM.
• B. It is used to route between autonomous systems.
• C. It confines network instability to one area of the network.
• D. It increases routing overhead on the network.
• E. It allows extensive control of routing updates.
• F. It is simpler to configure than RIP v2.

Correct answer: A, C, E

Explanation

The correct answers A, C, and E highlight OSPF's capabilities, such as supporting Variable Length Subnet Masking (VLSM), confining network instability to certain areas, and allowing detailed control over routing updates. Option B is incorrect because OSPF is an interior gateway protocol and does not route between autonomous systems, while option D is false as OSPF is designed to minimize routing overhead compared to simpler protocols.