OSPF is configured using default classful addressing. With all routersand interfaces operational,
how many networks will be in the routing table of R1 that are indicated to be learned by OSPF?
A.
2
B.
3
C.
4
D.
5
E.
6
F.
7
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It can only learn the routing that are connected to it.
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Default classful addressing / auto-summery is a pain. It will add whole class B address 172.16.0.0 /16 to the routing table.
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Its a kind of tricky!!!
it says using Default class full addressing meaning the network Is all 172.16.0.0/16 because all are class B private address listed as below
172.16.2.64 /26
172.16.2.232/30
172.16.2.228/30
172.16.3.0 /24
don’t forget its OSPF so
There is two different things in R1
1, directly connected networks
2, learned by routing protocols /in this concept OSPF/
so the quation says Learned by OSPF…… that means not directly connected only OSPF. those network comes from R2,R3 and R4.
thank you guys and sorry about my Broken English!!!!
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