I'm assuming by metric it means to ignore the 110 OSPF AD and select the cost.
A is wrong because the Static route doesn't reach 172.16.0.202
B is wrong because that is the OSPF AD not metric.
Which leaves C/D...
Host - 172.16.0.202 falls under OSPF 172.16.0.128/25
202 in binary 11001[100] .200 - .207
192 in binary 11000[000] .192 - .199
Which means the host can't reach the EIGRP route therefore the OSPF route is used and has a metric of 38443
The static route DOES reach the host ... 172.16.0.1 - 254,
BUT the keyword is "LEARNED"
a STATIC route isn't l"learned" so that leaves us with the closed network route that was learned dynamically....hence 172.16.0.128/28 (172.16.0.129 - 254 hosts) OSPF
It's not really important here, what we have to notice is which route checks the longest prefix match algorithm. The static route doesn't match this algorithm as much as the OSPF one
Key word here is "metric". The answer would have been 110 if the question asked about the Administrative Distance (AD). OSPF was the preferred route in this instance because of the longest prefix match.
why wouldn't it be B? even though metric is generally used for the value after the ad, they some times use the term metric to describe AD. this garbage is really confusing
Before being rude and telling people to learn some subnetting, start with yourself.
172.16.0.128/25
Number of hosts : 126
First host : 172.16.0.129
Last host : 172.16.0.254
So...how it doesn't reach 172.16.0.202 ?
regardless of "learned" or not.. prefix takes precedence over AD.. even if you had a static route /24 that the IP falls in and a OSPF of /25 that it also falls in, the OSPF route will be chosen due to prefix.
172.16.0.128/25 has 128 addresses BUT usable hosts are only126 from to 0.129 to 0.255 which means 172.16.0.202 will be in this /25 subnet range
WHILE
172.16.0.192/29 has 8 addresses BUT only six are usable hosts which is from 0.193 to .0.199 means 172.16.0.202 is out of /29 subnet range.
CORRECTION ;)
The static route DOES reach the host ... 172.16.0.1 - 254,
BUT the keyword is "LEARNED"
a STATIC route isn't "learned" so that leaves us with the closet network route that was learned dynamically....hence 172.16.0.128/25 (172.16.0.129 - 254 hosts) OSPF
upvoted 2 times
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