Route summarization in OSPF is restricted to specific routers: Area Border Routers (ABRs) and Autonomous System Boundary Routers (ASBRs). These devices perform summarization to reduce routing table size and minimize advertised routing information between areas or across AS boundaries. Regular routers cannot perform route summarization, making this statement false .

Comprehensive and Detailed In-Depth Explanation:
* Spanning Tree Protocol (STP) has long convergence times due to Listening and Learning states.
* Rapid Spanning Tree Protocol (RSTP) introduces:
* Proposal/Agreement (P/A) mechanism # Allows ports to quickly transition to Forwarding state without waiting.
* This mechanism significantly reduces convergence time in a switched network.
* Since RSTP does use the P/A mechanism to accelerate port forwarding, the statement is true.
# Reference: Huawei HCIA-Datacom Study Guide, STP vs. RSTP and P/A Mechanism.

LSA Lifetime and Deletion
* The LS Age field in the LSA header tracks the age of an LSA. When the LS Age reaches its maximum value (3600 seconds), the LSA is marked for deletion. This ensures old or stale LSAs are removed from the network to maintain accurate routing information.
HCIP-Datacom-Core Reference
* Detailed explanation of LS Age behavior and LSA deletion processes can be found in the OSPF LSDB and LSA sections.

In dual-link MSB networking with load balancing, the new AP will connect to the AC with the lower number of connected APs. In this case, AC2 has only 20 connected APs, while AC1 has 100. Therefore, the new AP will connect to AC2 .