Cisco Certified Network Associate (CCNA) 200-301 — Question 433

The correct answer is C. Option C: The router replaces the original source and destination MAC addresses with the sending router MAC address as the source and neighbor MAC address as the destination.

Explanation

OSPF elects a designated router on multiaccess networks to reduce adjacency and LSA exchange overhead. NAT translates addresses between network domains, commonly conserving public IPv4 addresses.