An engineer must connect a new remote site to an existing OSPF network.
The new site consists of two low-end routers, one for WAN, and one for LAN.
There is no demand for traffic to pass through this area.
Which area type does the engineer choose to provide minimal router resource utilization, while still allowing for full connectivity to the rest of the network?
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A. B. C. D.D.
To provide minimal router resource utilization while still allowing for full connectivity to the rest of the network, the engineer should choose a stubby area.
A stubby area is an OSPF area that does not receive external LSAs (Link State Advertisements) from outside the area, except for a default route injected by the ABR (Area Border Router) at the boundary of the area. This feature reduces the amount of routing information that needs to be stored in the stubby area's routers, making the network more efficient and less prone to routing loops.
In contrast, a totally stubby area is a stubby area that also blocks Type 3 LSAs (Summary LSAs) from being propagated into the area. This can further reduce the amount of routing information stored by the routers in the area and simplify their configuration. However, if there are any subnets within the area that need to be advertised to the rest of the network, a default route will need to be manually configured at the ABR to point to the subnet(s) in question.
A not-so-stubby area (NSSA) is similar to a stubby area, but it allows for the injection of external routes into the area by an ASBR (Autonomous System Boundary Router) within the NSSA. This feature can be useful for connecting to external networks or for redistributing routes from other protocols.
Finally, a totally not-so-stubby area (T-NSSA) is a combination of a totally stubby area and an NSSA, allowing for external routes to be injected into the area but blocking Type 3 LSAs.
Therefore, in this scenario, a stubby area would be the best choice as there is no demand for traffic to pass through this area, and a default route injected by the ABR can provide full connectivity to the rest of the network.