Q9
Single choice
Refer to the exhibit.
OSPF is an interior routing protocol on the network. R2 is in the backbone area, and R4 is in a totally NSSA area. R5 announces only the 0.0.0.0/0 route to R4 via BGP. R4 is configured with redistribute bgp 736 metric-type 2. After the most recent maintenance window, R2 no longer has the default route via R4.
Which action must the network engineer take to correct the reachability problem?