Cisco Certified Network Associate (CCNA) Practice Exam

What is a benefit of using a single OSPF area network design?

1. Increased network redundancy

2. Reduction in types of LSAs generated

3. The need for virtual links

4. Improved bandwidth allocation

The correct answer is: Reduction in types of LSAs generated

Choosing a single OSPF area network design primarily leads to the reduction in types of Link-State Advertisements (LSAs) that are generated. In OSPF, different types of LSAs serve various purposes, including announcing routes, describing the network topology, and more. When a network is structured with only one area (commonly Area 0, which is the backbone area), it simplifies the LSA generation since all routers in that area send and receive the same LSAs. This uniformity is beneficial for several reasons. Firstly, it streamlines the routing process, as all routers have the same view of the network, reducing the complexity involved in maintaining multiple OSPF areas. It mitigates the overhead associated with processing and interpreting different LSA types that would be present if multiple areas were configured. In contrast, the use of multiple OSPF areas can lead to the generation of various LSA types, which can result in added complexity and processing overhead. While the other options suggest benefits that can occur in different scenarios or configurations, they do not directly relate to the benefits derived specifically from a single OSPF area setup. For instance, increased network redundancy often requires multiple areas to manage failover and load balancing, and the need