2-8: Single Area OSPF Flashcards Preview

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Flashcards in 2-8: Single Area OSPF Deck (33):
1

The election of a DR and a BDR takes place on _______ networks, such as Ethernet networks.

multiaccess 

1

Which three statements describe the similarities between OSPFv2 and OSPFv3?

  1. They both use the same DR/BDR election process.
  2. They both share the concept of multiple areas.
  3. They both are link-state protocols.

1

What does a Cisco router use automatically to create link-local addresses on serial interfaces when OSPFv3 is implemented?

An Ethernet interface MAC address available on the router, the FE80::/10 prefix, and the EUI-64 process

2

Which command should be used to check the OSPF process ID, the router ID, networks the router is advertising, the neighbors the router is receiving updates from, and the default administrative distance?

show ip protocols

3

What is the third precedence for making a router ID on an OSPF enabled router?

Loopback interface address 10.1.1.1

3

What are the two purposes of an OSPF router ID?

  1. To uniquely identify the router within the OSPF domain
  2. To facilitate router participation in the election of the designated router

5

Which three statements describe features of the OSPF topology table?

  1. When converged, all routers in an area have identical topology tables.
  2. It is a link-state database that represents the network topology.
  3. The table can be viewed via the show ip ospf database command.

6

What command would be used to display the Routing Protocol is ospf 10

show ip protocols

7

Which criterion is preferred by the router to choose a router ID?

the router-id rid command

8

All the routers are in the backbone area.

single-area OSPF

9

Which command will provide information specific to OSPFv3 routes in the routing table

show ipv6 route ospf

9

What command would be used to display the Neighbor ID of 3.3.3.3

show ip ospf neighbor

10

Which wildcard mask would be used to advertise the 192.168.5.96/27 network as part of an OSPF configuration?

0.0.0.31

11

Single area OSPFv3 has been enabled on a router via the ipv6 router ospf 20 command. Which command will enable this OSPFv3 process on an interface of that router?

ipv6 ospf 20 area 0

12

What command would be used to display the Routing Process ospf 10 with ID 1.1.1.1

show ip ospf

12

13

What command would be used to display the BW 1544 Kbit/sec

show interface serial 0/0/0

14

This is where the details of the neighboring routers can be found.

Adjacency Database

15

OSPF uses ____ as a metric.

cost

15

This is the algorithm used by OSPF.

Shortest Path First

18

What is the first precedence for making a router ID on an OSPF enabled router?

Configured router ID 1.1.1.1

19

What is the second precedence for making a router ID on an OSPF enabled router?

Loopback interface IP address 172.16.1.1

21

To quickly verify OSPFv3 configuration information including the OSPF process ID, the router ID, and the interfaces enabled for OSPFv3, you need to issue the command

show ipv6 protocols

22

A router is participating in an OPSFv2 domain. What will always happen if the dead interval expires before the router receives a hello packet from an adjacent DROTHER OPSF router?

OSPF will remove that neighbor from the router link-state database.

24

Which OSPF component is identical in all routers in an OSPF area after convergence?

Link-state database

25

What is a function of OSPF hello packets?

To discover neighbors and build adjacencies between them

26

A network administrator enters the command ipv6 router ospf 64 in global configuration mode. What is the result of this command?

The OSPFv3 process will be assigned an ID of 64.

27

Which OSPFv3 function works differently from OSPFv2?

authentication

29

Which OPSF packet contains the different types of link-state advertisements?

LSU

30

When a network engineer is configuring OSPFv3 on a router, which command would the engineer issue immediately before configuring the router ID?

ipv6 router ospf 10

31

What is the fourth precedence for making a router ID on an OSPF enabled router?

Serial interface IP address 192.168.10.1

32

Which command will verify that a router that is running OSPFv3 has formed an adjacency with other routers in its OSPF area?

show ipv6 ospf neighbor

33

This is where you can find the topology table.

link-state database