Know how IP uses ARP.
It is important to remember how ARP is used with IP. When a host needs to know the MAC address of a local host, the device will send an ARP request and wait for a reply with the MAC address of the device to which it needs to send data.

Remember the Network-layer protocols that use predictable MAC address mappings.
The three protocols that use predictable MAC addresses are XNS, IPX, and DECnet.

Key Terms and Concepts

Address Resolution Protocol (ARP)
Used to find hardware addresses and map them to IP addresses.

Hello Protocol
Uses broadcasts on the network to advertise MAC addresses on the network.

Predictable MAC addressing
A method of using MAC addresses in the Network-layer addresses used by XNS, IPX, and DECnet.

Related posts:

1. Function of the MAC Address
2. Data link and Network Addresses Exams Points
3. TCP-IP Network-layer protocol Exam Points
4. Data link and Network Addresses
5. Classes of IP addresses and subnetting
6. Network Addressing Exams Points
7. Functions Performed By ICMP
8. TCP-IP Network-layer protocol
9. Layered Model Exam Points
10. IP Addresses and IPX Addresses