Refer to the exhibit. An architect has been tasked to design an ISIS solution for a medium-size financial customer. The resulting design must meet these requirements:

•Traffic from the branches toward major sites is limited to 500 Mbps.

•Traffic from the major sites toward HQ is limited to 1Gbps.

•The number of branch sites will increase to 30 within the next three years.

•Link and node failures in a region must only have an impact within that region

Which two ISIS design aspects must be included? (Choose two.)