NET 225 Chapter 9 Quiz

What must all non-backbone OSPF areas connect to when deploying multiarea OSPF?

Area 0

Match the OSPF LSA types to their descriptions. (Not all options are used.)

LSA type 1 - including a list of directly attached network prefixes and link type LSA type 2 - identifying the routers and the network address of the multiaccess link LSA type 3 - advertising networks from other areas by ABRs LSA type 4 - advertising an ASBR to other areas and providing a route to it LSA type 5 - advertising external (non-OSPF) network addresses

An ABR in a multiarea OSPF network receives LSAs from its neighbor that identify the neighbor as an ASBR with learned external networks from the Internet. Which LSA type would the ABR send to other areas to identify the ASBR, so that internal traffic that is destined for the Internet will be sent through the ASBR?

LSA type 4

Which type of routing table entry would indicate that an external route was redistributed into the multiarea OSPF process?

O E2

An OSPF router has received type 3 summary LSAs that were flooded into an area. How are these LSAs identified in the routing table?

O IA

Which two statements describe OSPF? (Choose two.)

OSPF routers within an area have the same link-state information. OSPF routers may have large routing tables if routes are not summarized.

Refer to the exhibit. A network administrator is configuring OSPFv2 on R1. Which conclusion can be drawn based on the configuration?

R1 is an ABR.

Refer to the exhibit. A network administrator is configuring OSPFv3 on R1. Which command sequence is used to advertise the network that is attached to Gi0/0?

R1(config)# interface GigabitEthernet 0/0. R1(config-if)# ipv6 ospf 3 area 1.

What is a benefit of multiarea OSPF routing?

Topology changes in one area do not cause SPF recalculations in other areas.

What information is advertised in a type 4 LSA?

the route to reach an ASBR

Which LSA type advertises directly connected OSPF-enabled links to other OSPF routers within the OSPF area they originated?

type 1

Which two types of LSAs are flooded only within the area in which they originated? (Choose two.)

type 1. type 2.

Which LSA type is flooded by a designated router to other OSPF routers within the same area?

type 2