$6.$ The textbook describes four types of WAN configurations $$ ring, star, partial mesh, and full mesh. Which configuration is illustrated in the diagram above? Explain your answer.

$7.$ Imagine that network traffic is coming from Portland and traveling to Miami. The most obvious route the traffic can take is Portland to Miami, due to the direct connection between the two campuses. Assuming all WAN links are operational, identify a two$-$hop route, a three$-$hop route, a four$-$hop route, and a five$-$hope route between Portland and Miami.

$8.$ Now imagine that both Kansas City and San Antonio are entirely offline. How many operational routes would there be from Portland to Miami? Identify each route along with its number of hops.

$9.$ Imagine that the organization needs to remove four WAN links to save on cost $($and that all links are operational again$).$ Identify four links to be removed. You should ensure that, between any two campuses, the new configuration has at least one route that contains no more than two hops. It is fine if other routes are more than two routes, but there should be at least one route that is no more than two hops between any two campuses.

$10.$ With the four WAN links removed, what is the new WAN configuration, ring, star, partial mesh, or full mesh? What are the advantages of the new configuration over the old? Explain your answer.