Which statement is true about the command ipv6 ospf 1 area 0?（）
第1题：
Router R1 currently has no configuration related to IPv6 or IPv4. The following configuration exists in a planning document, intended to be used to copy/paste into Router R1 to enable OSPFv3 on interfaces F0/0 and S0/0/0. No other related configuration exists. Assuming F0/0 and S0/0/0 reach an up/up state, which of the following is true about OSPFv3 on R1 after this configuration has been pasted into R1?（）ipv6 router ospf 1ipv6 unicast- routinginterface f0/0ipv6 address 2000 ::1/64ipv6 ospf 1 area 1interface s0/0/0ipv6 address 2001::/64 eui - 64ipv6 ospf 1 area 0
A. OSPF works on F0/0 and S0/0/0 without further configuration
B. OSPF works with the addition of one command: a no shutdown command in OSPF router configur ation modE
C. OSPF works with the addition of one command: an router - id command in OSPF router configuration modE
D. OSPFv3 needs at least two more configuration commands before it works on R1
第2题：
Which of the following answers can be verified as true based on the following command output from Router R1?（）R1show ip ospf virtual - linksVirtual Link OSPF_VL0 to router 4.4.4.4 is upRun as demand circuitDoNotAge LSA alloweD.Transit area 1, via interface FastEthernet0/1, Cost of using 3
A. R1 is configured with an area 0 virtual - link 4.4.4.4 cost 3 command.
B. The ping 4.4.4.4 command on R1 must currently be successful.
C. R1‘s Fa0/0 OSPF cost is 3.
D. 4.4.4.4 is known to R1 based on a Type 1 LSA in area 1.
第3题：
A. When Area 0 is active, the loopback interface must be configured in OSPF for it to be advertised.
B. When Area 0 is active, the loopback address is automatically advertised into other areas.
C. When Area 0 is active, the OSPF router-id must match the loopback address for the loopback address to be advertised.
D. When Area 0 is active, the router-id must be configured for the loopback address to be advertised.
第4题：
A. It must be issued before the network command to enable the OSPF pr ocess for IPv6.
B. It must be issued after the network command to enable the OSPF process for IPv6.
C. It must be issued in router global configuration mode to enable the OSPF process for IPv6.
D. It must be issued in interface configuration mode to ena ble the OSPF process for IPv6.
第5题：
A. After the router ospf 10 and passive - interface s0/0 commands have been issued , the s0/0 interface will not send any OSPF updates, but will receive routing updates on that interface
B. When you use the passive - interface command with RIPv2, multicasts are sent out the specified interface
C. After the router rip and passive -interface s0/0 commands have been issued, the s0/0 interface will not send any RIP updates, but will receive routing updates on that interface
D. When you use the passive - interface command with EIGRP, hel lo messages are not sent out the specified interface
E. After the router eigrp 10 and passive - interface s0/0 commands have been issued, the s0/0 interface will not send any EIGRP updates, but will receive routing updates on that interface
F. When you use the passive - interface command with OSPF, hello messages are not sent out the specified interface
第6题：
A. The router must have one routing protocol configured, but configuration for both routing protocols is not necessary
B. The router must hav e at least one working link connected to each routing domain
C. The redistribute command must be configured under EIGRP to send the routes to OSPF
D. The redistribute command should be configured under OSPF to take routes from EIGRP into OSPF
第7题：
Routers R1 and R2, OSPF neighbors in area 0 over their Fa0/0 interfaces (respectively), currently both successfully use OSPF MD5 authentication. The OSPF configuration includes the area 0 authentication command under the router ospf 1 command.Which of the following commands must have been configur ed on R1‘s Fa0/0 interface?（）
A. ip ospf authentication null
B. ip ospf authentication message - digest
C. ip ospf authentication -key whatever- it - is
D. ip ospf message - digest - key 1 md5 whatever - it - is
E. ip ospf md5 1 key whatever - it - is
第8题：
A. cspf enable
B. disable no-cspf
C. traffic-engineering
D. enable traffic-engineering-database
第9题：
A. router ospf ipv6 process - id
B. ipv6 ospf process - id
C. router ospf process - id
D. ipv6 router ospf process - id
第10题：
A. Interfaces will automatically detect and build adjacencies with neighbor routers
B. DR and BDR elections will not occur
C. DR and BDR elections will occur
D. The neighbor command is required to build adjacencies
E. All routers must be configured in a fully meshed topology with all other routers