CCNA 2 – Chapter 8 – Exam Answer 2016 100%

CCNA 2 – Chapter 8 – Single-Area OSPF Exam Answer 2016 100%

1.What are the two purposes of an OSPF router ID? (Choose two.)

• to uniquely identify the router within the OSPF domain
• to facilitate router participation in the election of the designated router
• to enable the SPF algorithm to determine the lowest cost path
• to remote networks
• to facilitate the establishment of network convergence
• to facilitate the transition of the OSPF neighbor state to Full

2.What is a function of OSPF hello packets?

• to discover neighbors and build adjacencies between them
• to request specific link-state records from neighbor routers
• to send specifically requested link-state records
• to ensure database synchronization between routers

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

• link-state database
• SPF tree
• adjacency database
• routing table

4.Which three statements describe features of the OSPF topology table? (Choose three).

• Its contents are the result of running the SPF algorithm.
• The topology table contains feasible successor routes.
• The table can be viewed via the show ip ospf database command.
• After convergence, the table only contains the lowest cost route entries for all known networks.
• It is a link-state database that represents the network topology.
• When converged, all routers in an area have identical topology tables.

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

• DBD
• LSU
• LSAck
• hello
• LSR

6.A router is participating in an OSPFv2 domain. What will always happen if the dead interval expires before the router receives a hello packet from an adjacent DROTHER OSPF router?

• SPF will run and determine which neighbor router is “down”.
• OSPF will remove that neighbor from the router link-state database.
• OSPF will run a new DR/BDR election.
• A new dead interval timer of 4 times the hello interval will start.

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

• the IP address of the highest active interface on the router
• the IP address of the highest active OSPF-enabled interface
• the IP address of the highest configured loopback interface on the router
• the router-id rid command

8.By order of precedence, match the selection of router ID for an OSPF-enabled router to the possible router ID options. (Not all options are used.)

By order of precedence, match the selection of router ID for an OSPF-enabled router to the possible router ID options. (Not all options are used.)

9.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
• 255.255.255.223
• 0.0.0.32
• 255.255.255.224

10.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 ospf neighbor
• show ip ospf interface
• show ip protocols
• show ip ospf

11.Which OSPFv3 function works differently from OSPFv2?

• hello mechanism
• authentication
• election process
• metric calculation
• OSPF packet types

12.Match the description to the term. (Not all options are used.)

CCNA 2. Match the description to the term. (Not all options are used.)

13.Which three statements describe the similarities between OSPFv2 and OSPFv3? (Choose three.)

• They both use the global address as the source address when sending OSPF messages.
• They both support IPsec for authentication.
• They both use the same DR/BDR election process.
• They both have unicast routing enabled by default.
• They both are link-state protocols.
• They both share the concept of multiple areas.

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

• the FE80::/10 prefix and the EUI-48 process
• an Ethernet interface MAC address available on the router, the FE80::/10 prefix, and the EUI-64 process
• the highest MAC address available on the router, the FE80::/10 prefix, and the EUI-48 process
• the MAC address of the serial interface, the FE80::/10 prefix, and the EUI-64 process

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

• The router will be assigned a router ID of 64.
• The OSPFv3 process will be assigned an ID of 64.
• The router will be assigned an autonomous system number of 64.
• The reference bandwidth will be set to 64 Mb/s.

16.Match the information to the command that is used to obtain the information. (Not all options are used.)

Match the information to the command that is used to obtain the information. (Not all options are used.)

17.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
• show ipv6 interface brief
• show running-configuration
• show ipv6 route ospf

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

• show ip route
• show ipv6 route ospf
• show ip route ospf
• show ipv6 route

19.Fill in the blank.
The election of a DR and a BDR takes place on multiaccessnetworks, such as Ethernet networks.

20.Fill in the blank.
OSPF uses cost as a metric.

21.Fill in the blank. Do not use abbreviations.
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.Open the PT Activity. Perform the tasks in the activity instructions and then complete the task.
What message is displayed on www.ciscoville.com?

• Completion!
• Converged!
• Finished!
• Success!

23.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
• clear ipv6 ospf process
• ipv6 ospf 10 area 0
• interface serial 0/0/1

24.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 20
• ipv6 ospf 20 area 0
• ipv6 ospf 0 area 0
• ipv6 ospf 0 area 20