OSPF Review (The Second Best Igp)

VLSM is supported

Route Summarization is supported

Split Horizon is supported

Link State within and Area is supported

All of the Above

Because poisoning is cruel.

OSPF uses a form of Split Horizon and Poison Reverse, called akuna matata.

OSPF was designed to provide a loop free topology and the requirement of Area 0 is one of these methods.

All of the Above

Hot sausages

All routers share the same database of all links in the area and compute the Djisktra algorithm to on that same data set, this ensures a loop free environment. The "Link State Data Base" and mechanisms to ensure the LSDB is synchronized is very important in OSPF: mechanisms to update missing LSAs and to ensure synchronization are built into OSPF messages.

OSPF relies on EIGRP for its control plane

All of the Above

OSPFv2 is for IPv4 and OSPFv3 is for IPv6.

OSPFv3 is only available in ISR-G2 bundles with Advanced IP Services.

What happened to OSPFv1?

All of the Above

True

False

True

False

True

False

All Boys Ride

A Big Router

Area Boundary Router

Area Border Router

All of the Above

Not sure

When is this over?

True

False

E1 is an external route that ASBRs redistribute into OSPF.

Historically, E2 was when the cost to get to the ASBR was insignificant versus the low bandwidth of the External link.

Yes

E2 was also a computationally easier way to handle external routes, since the cost was the same from all OSPF routers and no calculations had to be made.

True

False