Which has the lowest administrative distance among EIGRP, OSPF, and RIP?

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Multiple Choice

Which has the lowest administrative distance among EIGRP, OSPF, and RIP?

Explanation:
Administrative distance is the trust value a router gives to routes learned from each routing protocol, and the lower the value, the more preferred the route. The default distances are: EIGRP internal routes use 90, OSPF routes use 110, and RIP routes use 120. Since 90 is the smallest, routes learned via EIGRP are considered more trustworthy than those from OSPF or RIP, so they will be chosen when multiple protocols advertise the same destination. (Note: EIGRP external routes have a higher distance, but for standard internal route selection, EIGRP has the lowest default AD.)

Administrative distance is the trust value a router gives to routes learned from each routing protocol, and the lower the value, the more preferred the route. The default distances are: EIGRP internal routes use 90, OSPF routes use 110, and RIP routes use 120. Since 90 is the smallest, routes learned via EIGRP are considered more trustworthy than those from OSPF or RIP, so they will be chosen when multiple protocols advertise the same destination. (Note: EIGRP external routes have a higher distance, but for standard internal route selection, EIGRP has the lowest default AD.)

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