Network Diagram or Network Representations | Topology Diagram

Network Diagram or Network Representations | Topology Diagram

To representing a network we use different symbol and topology icon, and this Topology Diagram known as Network Diagrams. In this section we will see the Logical Topology Diagrams and the Physical Topology Diagrams. The topology diagrams are mandatory for everyone working with networks. This is how a network is represented.

Network Symbols

Network diagrams use symbols / images to represent the different devices and connections that make up a network. A diagram allows you to easily understand the way in which devices are connected in a large network. This type of representation of a network is called a topology diagram . The ability to recognize the logical representations of physical network components is essential to visualize the organization and operation of a network.

In addition to these representations, specialized terminology is used when talking about how these devices and the media connect to each other. Some important terms to remember are:

• Network interface card: A NIC, or LAN adapter, provides the physical connection to the network on the PC or other terminal. The means that connect the PC to the network device are connected directly to the NIC.
• Physical port: a connector or connection on a network device where the media is connected to a terminal or other network device.
• Interface: specialized ports on a network device that connects to individual networks. Since routers are used to interconnect networks, the ports of a router are known as network interfaces.

TYPES OF NETWORK DIAGRAMS

Topology diagrams are mandatory for everyone who works with networks. These diagrams provide a visual map that shows how the network is connected.

There are two types of topology diagrams:

PHYSICAL TOPOLOGY DIAGRAM

Identify the physical location of the intermediary devices and the installation of the cables.

LOGIC TOPOLOGY DIAGRAM

Identify devices, ports and addressing scheme.

In summary, the topologies shown in the physical and logical diagrams are appropriate for your level of understanding at this point in the course.