You want to create an OSPF area that only contains intra-area route information in the form of Type 1 and Type 2 LSAs. In this scenario, which area is needed to accomplish this task?
B. totally stubby area
A totally stubby area is a more restrictive type of OSPF stub area that blocks not only Type 4 and 5 LSAs but also Type 3 LSAs from other OSPF areas.
A totally stubby area (TSA) is a stub area in which summary link-state advertisement (type 3 LSAs) are not sent. A default summary LSA, with a prefix of 0.0. 0.0/0 is originated into the stub area by an ABR, so that devices in the area can forward all traffic for which a specific route is not known, via ABR.
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