Designing Cisco Network Service Architectures (ARCH, legacy) — Question 86

From a design perspective which two of the following OSPF statements are most relevant? (Choose two)

Answer options

• A. OSPF stub areas can be thought of as a simple form of summarization
• B. OSPF cannot filter intra-area routes
• C. An ABR can only exist in two areas - the backbone and one adjacent area
• D. Performance issues in the Backbone area can be offset by allowing some traffic to transit a non-backbone area
• E. The size of an area (the LSDB) will be constrained by the size of the IP MTU

Correct answer: A, B

Explanation

Answer A is correct because OSPF stub areas indeed serve as a simplified method of summarization, reducing the routing table size. Answer B is also correct since OSPF does not allow for the filtering of intra-area routes, which is a fundamental characteristic of how OSPF functions. The other options provide incorrect statements regarding OSPF behavior or architecture.