Refer to the exhibit. Which type of route does R1 use to reach host 10.10.13.10/32?
default route
network route
host route
floating static route
OSPF route
Explanations
Answer B (correct): The network route applies to a subnet. In this extract, “O 10.10.13.0/25 [110/6576] via 10.10.10.1” is the network route used to reach 10.10.13.10/32, as this IP address belongs to this subnet.
When a router needs to forward a packet, it looks for the most specific route in its routing table to determine which path to take. In this case, R1 would use the route “O 10.10.13.0/25 [110/6576] via 10.10.10.1” to reach 10.10.13.10/32, as this is the most specific network route that encompasses this IP address.
Answer A (incorrect): The default route is a route that applies to all IP addresses for which there is no more specific route. In the extract, “B* 0.0.0.0/0 [20/0] via 10.10.10.18” is a default route, but it is not used to reach 10.10.13.10/32 as there is a more specific route.
Answer C (incorrect): A host route is a route that applies to a single IP address. There is no specific host route for 10.10.13.10/32 in this extract.
Answer D (incorrect): A floating static route is a static route configured with a higher metric than a dynamic route. It becomes active when the dynamic route is no longer available. There is no mention of such a route in the extract.
Answer E (incorrect): Although there are OSPF routes (indicated by the “O”) in the extract, this does not specify the type of route used to reach 10.10.13.10/32.
