What type of protocols are used to share routes within a single autonomous system?

The correct answer is Interior Gateway Protocols. These protocols are specifically designed to facilitate the exchange of routing information within a single autonomous system (AS). An autonomous system is a collection of IP networks and routers under the control of a single organization that presents a common routing policy to the internet.

Interior Gateway Protocols, such as OSPF (Open Shortest Path First) and EIGRP (Enhanced Interior Gateway Routing Protocol), allow routers within the same AS to communicate, share information about available routes, and determine the most efficient paths for data to travel. They function based on algorithms that compute the shortest paths based on metrics such as link cost, bandwidth, and delay.

In contrast, Exterior Gateway Protocols are used for routing between different autonomous systems, while Static Routing Protocols involve manually configured routes, lacking the dynamic capabilities of the interior protocols. Dynamic Routing Protocols can include both interior and exterior gate protocols, but the question specifically seeks protocols operating within a single AS, which confirms that Interior Gateway Protocols is the appropriate choice.