Several links have been broken so th at for the next day or two, what was formerly a contiguous area 0 has been broken into two parts. However, both parts of area 0 have working links into area 1 using routers with RID 1.1.1.1 and 2.2.2.2.
Which answers list the command on the router with RID 1.1.1.1 to create a virtual link to help solve this temporary problem?（）
A. area 0 virtual - link 2.2.2.2
B. area 1 virtual - link 2.2.2.2
C. area 0 source - rid 1.1.1.1 dest - rid 2.2.2.2
D. virtual - link transit - area 1 RID 2.2.2.2
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Which of the following answers can be verified as true based on the following command output from Router R1?（）
R1#show ip ospf virtual - links
Virtual Link OSPF_VL0 to router 4.4.4.4 is up
Run as demand circuit
DoNotAge 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.
A. Stub
B. Totally stubby
C. NSSA
D. Totally NSSA
A. Routers cannot redistribute external routes into the area.
B. Routers should have zero Type 3 LSAs in their LSDBs.
C. Routers should have zero Type 5 LSAs in their LSDBs.
D. Routers should learn default routes from the ABRs attached to the area.
Router R1, an ASBR connected to the Internet and to backbone area 0, has been configured with a default - information originate command.
Which of the following is true about the effects of this configuration command?（）
A. R1 will always create and flood a default route into the OSPF domain.
B. R1 will create and flood an LSA for prefix/length 0.0. 0.0/0 into the OSPF domain if R1's IP routing table has a route to 0.0.0.0/0.
C. R1 will set a flag on the LSA for the subnet between itself and one of the ISPs, noting this subnet as a default network, regardless of whether R1 has a default route.
D. R1 w ill set a flag on the LSA for the subnet between itself and one of the ISPs, noting this subnet as a default network, but only if R1 has a route to 0.0.0.0/0.
The following output exists on Router R1, a router internal to area 1. What can you d etermine as true from the output of the show ip ospf database summary command?（）
A. The LSA was created by an ABR due to an area range command.
B. The LSA was created by an ASBR due to a summary - address command.
C. If cr eated by an area range command, the best metric for a subordinate subnet on that ABR must have been 11.
D. None of the other answers is correct.
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Which of the following is helpful to allow an IPv6 host to learn the IP address of a default gateway on its subnet?（）
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