Which two protocols manage neighbor discovery processes on IPv4 networks?

Which two protocols manage neighbor discovery processes on IPv4 networks?

1: NDP and Ethernet

2: TCP and UDP

3: IPv and IPv6

4: ICMP and ARP

Answer: 4: ICMP and ARP

The Internet Control Message Protocol (ICMP) and the Address Resolution Protocol (ARP), both of which are utilized to perform IPv4 network’s neighbor discovery process. ICMP is the right tool for error reporting and diagnosis through the ICMP Echo Request and Reply messages utilized in neighbor discovery. ARP is useful to convert IPv4 addresses into physical MAC addresses, this way the communication between the same segments of the network is possible. Relying on these design principles, the protocols are able to achieve functions as neighbor detection, address resolution, and network connectivity for IPv4 based systems hence these networks are able to communicate without a glitch.