Which two options play primary roles in route summarization? (Choose two.)
- Network numbers in areas should be assigned contiguously.
- VRRP
- FLSM
- Network numbers in areas should be assigned discontinuously.
- VLSM
Explanation: Route summarization, or route aggregation, is the process of advertising a contiguous set of addresses as a single address with a shorter subnet mask. To achieve this efficiently, network numbers must be assigned contiguously so they can be grouped into the smallest possible number of summary addresses. Additionally, because OSPF is a classless routing protocol, it supports VLSM (Variable Length Subnet Mask), allowing it to carry subnet mask information and consolidate multiple specific subnets into a single summary prefix.
Related exam: Modules 8 – 13: Checkpoint Exam: Network Routing Answers (CCNP ENCOR v9)
