Which route will a router use to forward an IPv4 packet after examining its routing table for the best match with the destination address?

Question:
Which route will a router use to forward an IPv4 packet after examining its routing table for the best match with the destination address?

• a level 1 child route
• a level 1 parent route
• a level 2 supernet route
• a level 1 ultimate route

Explanation: If the best match is a level 1 ultimate route then the router will forward the packet to that network. Level 1 parent route is a route that contains subnets and is not used to forward packets. Level 1 child routes and level 2 supernet routes are not valid routing table entries.

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