Exam 500-220 topic 2 question 10 discussion

Ignore my previous comment, the correct answer is A as question talking about distributed Layer 3 roaming feature. I don't know why moderators keep deleting my comments.

When we talking about MX, the MX is required as mobility concetrator. We don't need concetrator when we atablishing cominication between AP.

I´m pretty sure that the answer is A: Distributed Layer 3 Roaming Distributed layer 3 roaming is very scalable because the access points are establishing connections with each other without the need for a concentrator. The target access point will look up in the shared user database and contact the anchor access point. This communication does not traverse the Meraki Cloud and is a proprietary protocol for secure access point to access point communication. UDP port 9358 is used for this communication between the APs. https://documentation.meraki.com/Architectures_and_Best_Practices/Cisco_Meraki_Best_Practice_Design/Best_Practice_Design_-_MR_Wireless/Wireless_Layer_3_Roaming_Best_Practices

Distributed layer 3 roaming maintains layer 3 connections for end devices as they roam across layer 3 boundaries without a concentrator.

https://documentation.meraki.com/Architectures_and_Best_Practices/Cisco_Meraki_Best_Practice_Design/Best_Practice_Design_-_MR_Wireless/Wireless_Layer_3_Roaming_Best_Practices