Exam 200-301 topic 1 question 894 discussion

10.10.10.5 is not even in the topology diagram or shown as a next hop in the routing table at all so how can it be B???

Yeah "C". the least desirable metric = highest metric in OSPF

When R1 encounters an unknown next-hop IP address that is not defined in its routing table, it will typically assign a high metric to that route. This is because the router has no information about the path through the unknown next-hop and cannot accurately determine its quality or performance. As a result, the unknown next-hop will have the least desirable metric when sourced from R1 compared to the next-hops that are defined in the routing table.

if not C its other concept

it´s C

trolling

least desirable means not desirable or undesirable = highest metric :

C - least desirable metric is 100

this is key " least desirable metric"

A typically poor question. There are three routing types to choose from: Directly Connected, RIP, and OSPF. These are differentiated by the AD value (not metric). Each of these types have their own metric value, however one cannot simply compare them. It would be like comparing apples with oranges. One is a measure of cumulative cost (OSPF), whilst the other is a measure of hops (RIP). However, for a purely numerical value, the worst (highest) metric is 100 (10.10.10.3/32). As such, option ‘c’ is the least wrong answer. A truly asinine question.

the key word here is metric! C is with the highest metric among all. the AD is not in question here.

AD is higher than the others

RIP AD is higher compare to OSPF. Higher the Ad the least desirable. You will just consider metric if longest prefix and ad are the same.

A silly question. Routing is basically based on the destination IP address. It is nonsense to think about when sourced from R1.Does Cisco properly review the exam questions?

(I choose the letter A because RIP hops metric is less desirable than OSPF cost metric.) "When a single routing protocol learns multiple routes to the same subnet, the metric tells it which route is best. However, when two different routing protocols learn routes to the same subnet, because each routing protocol’s metric is based on different information, IOS cannot compare the metrics. For example, OSPF might learn a route to subnet 10.1.1.0 with metric 101, and EIGRP might learn a route to 10.1.1.0 with metric 2,195,416, but the EIGRP-learned route might be the better route—or it might not. There is simply no basis for comparison between the two metrics. When IOS must choose between routes learned using different routing protocols, IOS uses a concept called administrative distance. (OCG v1 Chapter 19: Understanding OSPF Concepts)"

it's a lot better if these so called "experts" don't put an answer at all. let the community decide the best answer. I'm assuming the questions are from cisco but the answers are not

why not A? because its RIP AD of 120 so it's the highest, wich means least desirable. ?