A server is a computer or device on a network that manages network resources. Servers are often dedicated and they perform only their server tasks.
D (Network and subnet parts) . When using classful IP addressing concepts as described in Chapter 13, Analyzing Subnet Masks, addresses have three parts: network, subnet, and host. For addresses in a single classful network, the network parts must be identical for the numbers to be in the same network.
The IP protocol standardizes the way machines over the Internet or any IP network forward or route their packets based on their IP addresses. IP Routing. Along with addressing, routing is one of the main functions of the IP protocol.