200-301: Cisco Certified Network AssociateDemo

Question

When OSPF discovers multiple paths to a network, how does it choose a route?

A For each existing interface, it adds the metric from the source router to the destination to calculate the route with the lowest bandwidth.
B It counts the number of hops between the source router and the destination to determine the route with the lowest metric.
C It divides a reference bandwidth of 100 Mbps by the actual bandwidth of the exiting interface to calculate the route with the lowest cost.
D It multiplies the active K values by 256 to calculate the route with the lowest metric.

Explanation

OSPF prefers the path with the lowest total cost. That cost is based on interface cost, which in the default OSPF calculation is the reference bandwidth divided by the bandwidth of the outgoing interface. The route with the lowest accumulated OSPF cost is selected, which matches the option describing 100 Mbps divided by the actual bandwidth of the exiting interface.

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OSPF Design Guide FAQ

200-301: Cisco Certified Network AssociateDemo

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