What is the only routing protocol that does not have a separate Layer 3 data structure?

A) EIGRP
B) IS-IS
C) OSPF
D) RIP

D
Explanation: The Routing Information Protocol (RIP) is the only routing protocol that does not use a separate data structure; it only deals directly with the Layer 3 routing table. Other protocols like OSPF have a neighbor table and a separate routing database.

Computer Science & Information Technology

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