第九章思科 高级网络互联(英文版答案)
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1. 1. Question
What are two reasons for creating an OSPF network with multiple areas?
(Choose two.)
o to provide areas in the network for routers that are not running OSPF
o to ensure that an area is used to connect the network to the Internet
o to reduce SPF calculations
o to reduce use of memory and processor resources
o to simplify configuration
2. 2. Question
What is used to facilitate hierarchical routing in OSPF?
o autosummarization
o the use of multiple areas
o frequent SPF calculations
o the election of designated routers
3. 3. Question
Which two statements correctly describe OSPF type 3 LSAs? (Choose two.)
o Type 3 LSAs are known as autonomous system external LSA entries.
o Type 3 LSAs are generated without requiring a full SPF calculation.
o Type 3 LSAs are used for routes to networks outside the OSPF autonomous system.
o Type 3 LSAs are known as router link entries.
o Type 3 LSAs are used to update routes between OSPF areas.
4. 4. Question
Which characteristic describes both ABRs and ASBRs that are implemented in a multiarea OSPF network?
o They usually have many local networks attached.
o They both run multiple routing protocols simultaneously.
o They are required to perform any summarization or redistribution tasks.
o They are required to reload frequently and quickly in order to update the LSDB.
5. 5. Question
What type of OSPF LSA is originated by ASBR routers to advertise external routes?
o type 1
o type 2
o type 3
o type 5
6. 6. Question
What OSPF LSA type is used to inform routers of the router ID of the DR in each multiaccess network in an OSPF area?
o type 1
o type 2
o type 3
o type 4
7. 7. Question
Refer to the exhibit. Which two statements are correct? (Choose two.)
CCNA3 v6.0 Chapter 9 Exam 002
o The entry for 172.16.200.1 represents a loopback interface.
o The routing table contains routes from multiple areas.
o To reach network 172.16.2.0, traffic will travel through the
GigabitEthernet0/0 interface.
o The routing table contains two intra-area routes.
o To reach network 192.168.1.0, traffic will exit via the Serial0/0/0 interface.
8. 8. Question
What routing table descriptor is used to identify OSPF summary networks that originate from an ABR?
o O
o O IA
o O E1
o O E2
9. 9. Question
A network administrator is verifying a multi-area OSPF configuration by
checking the routing table on a router in area 1. The administrator notices a
route to a network that is connected to a router in area 2. Which code appears in front of this route in the routing table within area 1?
o C
o O
o O E2
o O IA
10. 10. Question
Refer to the exhibit. What can be concluded about network 192.168.4.0 in the R2 routing table?
CCNA3 v6.0 Chapter 9 Exam 001
o The network was learned from a router within the same area as R2.
o The network was learned through summary LSAs from an ABR.
o The network can be reached through the GigabitEthernet0/0 interface.
o This network should be used to forward traffic toward external networks.
11. 11. Question
Which three steps in the design and implementation of a multiarea OSPF
network are considered planning steps? (Choose three.)
o Verify OSPF.
o Configure OSPF.
o Define the OSPF parameters.
o Gather the required parameters.
o Troubleshoot the configurations.
o Define the network requirements.
12. 12. Question