1. Explain the role of ARP and how it works. 2. What is the difference between a global IP address and a private IP address? 3. Explain the role of the network mask in Internet routing. 4. Describe...

1. Explain the role of ARP and how it works.

2. What is the difference between a global IP address and a private IP address?

3. Explain the role of the network mask in Internet routing.

4. Describe the three functions provided by a low-cost commercial Internet gateway product.