DPI エンジンがクラウド SaaS アプリケーションを識別した場合に、デュアル DIA を実行している WAN エッジ ルーターの動作を説明するものはどれですか?
正解:D
When a user onsite connects for the first time to one of the Software-as-a-Service apps, the user's device initiates a DNS query for the apps' URL, and the following chain of events visualized below happen: 1. The WAN edge router's DPI engine intercepts the user's DNS query. If the host DNS query is for the Cloud onRamp SaaS application, the vEdge router forwards it over the best performing circuit to the DNS server that is defined for this ISP. 2. DNS queries for non-Cloud onRamp applications are forwarded according to the routing table towards the SD-WAN overlay fabric