單項選擇題

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.


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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?()

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2.多項選擇題

R1, an ABR between backbone area 0 and area 1, has intra - area routes in area 0 for 10.1.1.0/24,10.1.2.0/24, and 10.1.3.0/24. These routes have metrics of 21, 22, and 23, respectively. An engineer then adds the area 0 r ange 10.1.0.0 255.255.0.0 command under the OSPF process of R1.
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D. R1 advertises a 10.1.0.0/16 route into area 1 with metric of 21 (lowest metric).

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題型:單項選擇題