Open Shortest Path First (OSPF) is a dynamic routing protocol for use in Internet Protocol (IP)
networks. An OSPF router on the network is running at an abnormally high CPU rate. By use of
different OSPF debug commands on Router, the network administrator determines that router is
receiving many OSPF link state packets from an unknown OSPF neighbor, thus forcing many
OSPF path recalculations and affecting router’s CPU usage. Which OSPF configuration should the
administrator enable to preent this kind of attack on the Router?

A.
Multi-Area OSPF

B.
OSPF stub Area

C.
OSPF MD5 Authentication

D.
OSPF not-so-stubby Area