CompTIA Network+ Study Guide

Chapter 01: Networking Concept
Technology Brief
Generating a network from the ground up needs a large number of hardware and software technologies to operate together to obtain the information from one machine to another: In essence, there is sets of rules on what a network should do and how it should be done.
These sets of rules and the software written to follow these rules are broken down into individual rules known as protocol. When a series of protocols are specifically designed to operate together, they are called a protocol suite. These protocol suites invariably are named with some form of protocol name/protocol name format.
Purposes and Uses of Ports and Protocols
The TCP/IP suite is a set of protocols used on today’s computer networks specifically on the Internet. It provides end-to-end connectivity by specifying that the data should be packetized, addressed, transmitted, routed and received on a TCP/IP network. This functionality is arranged into four consideration layers, and each protocol in the suite operates in a particular layer. This section will focus only on three protocols- ICMP, TCP, and UDP.