$(1)$ What routes to network NQ will P receive? For each route, list the AS$-$path.

$(2)$ Suppose R now uses export filtering so as not to advertise any of its routes to P$,$ though it does continue to advertise its routes to S$.$ What routes to network NR will P receive, with AS$-$paths?

Note $1$: An AS appends its info to the head of the AS$-$path and propagates to the next AS$.$

Note $2$: When P receives an AS$-$path, P is not listed in the path.

Answer: