Which of the following is true about the effects of this configuration command?

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?

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 will 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.

Explanation:
Without the always parameter, the default-information originate command generates an LSA
for a default route, with prefix 0.0.0.0/0, but only if its own IP routing table has a route for
0.0.0.0/0. It does not flag another LSA as being used as a candidate default route.



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