CCNA 200-125 OSPF Exam Questions and Preparation Tips

CCNA 200-125 OSPF Exam Questions and Preparation Tips

Are you preparing for the CCNA 200-125 OSPF (Open Shortest Path First) exam? This blog post will provide you with essential exam questions and valuable preparation tips to help you succeed. OSPF is a critical routing protocol used in large-scale networks, making it a crucial topic for CCNA candidates to master. Let’s dive into the OSPF exam questions and explore some key study strategies:

1. What is OSPF and why is it important?

OSPF is an interior gateway protocol that efficiently routes IP packets within a single autonomous system (AS). It calculates the shortest path using the Dijkstra algorithm, ensuring fast and reliable routing. OSPF is widely used due to its scalability, fast convergence, and support for multiple paths and network types.

2. OSPF Exam Question: How does OSPF select the best path?

OSPF determines the best path based on the following criteria:

  • 1. Cost: The sum of interface costs along the path.
  • 2. Bandwidth: OSPF prefers paths with higher bandwidth.
  • 3. Path Type: Intra-Area paths are preferred over Inter-Area or External paths.
  • 4. Router ID: The router with the lowest Router ID becomes the designated router.
  • 5. OSPF Area ID: The route inside the same OSPF area is preferred.

3. OSPF Exam Question: Explain OSPF Network Types

OSPF supports various network types, including:

  1. Point-to-Point: Connects two routers directly using serial links.
  2. Broadcast: Routers form an adjacency using multicast addresses (Ethernet networks).
  3. Non-Broadcast Multi-Access (NBMA): Used for frame relay or ATM networks.
  4. Point-to-Multipoint: Connects multiple routers without needing a full mesh topology.

4. OSPF Preparation Tips:

Here are some useful tips to prepare for your CCNA 200-125 OSPF exam:

  • 1. Understand OSPF fundamentals: Familiarize yourself with OSPF concepts, terminology, and operations.
  • 2. Practice subnetting: Master IP subnetting to configure OSPF networks effectively.
  • 3. Configure OSPF in a lab environment: Use simulators or virtual labs to gain hands-on experience.
  • 4. Review OSPF show commands: Learn and understand OSPF-specific show commands for troubleshooting.
  • 5. Take practice exams: Test your knowledge with mock exams to assess your readiness.
  • 6. Join study groups or forums: Collaborate with fellow learners and share knowledge and resources.

By following these preparation tips and answering the OSPF exam questions, you will increase your chances of passing the CCNA 200-125 OSPF exam successfully.


In conclusion, the CCNA 200-125 OSPF exam is an essential step toward becoming a certified network professional. Understanding OSPF and its routing principles is crucial for a successful career in networking. Remember to focus on OSPF fundamentals, network types, and OSPF path selection criteria. Practicing in a lab environment and taking mock exams will further enhance your preparation. Best of luck with your exam!

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