Cisco Certified Network Associate (CCNA) 200-301 — Question 458

The correct answer is B. Option B: R17# ! no ip domain lookup ip cef ipv6 unicast-routing ! interface FastEthernet0/0 no ip address duplex auto speed auto ipv6 address 2001:DB8:2::201/64 ! Interface FastEthernet1/0 no ip address duplex auto speed auto...

Explanation

CDP is Cisco's proprietary Layer 2 neighbor discovery protocol. OSPF elects a designated router on multiaccess networks to reduce adjacency and LSA exchange overhead. IPv6 uses 128-bit addresses and relies on Neighbor Discovery rather than ARP.