The cable used most often is Ethernet, which consists of four pairs of wires inside of a plastic jacket. Traditionally, computers are connected to each other using cables-creating a network. What is the IP address for your computer? _Īnd write down the IP address it reports: _Īre these numbers the same, or different? Why? Network Hubs and Switches
On the street, it has the address 192.168.1.1, and on the Internet it has the address 74.10.10.50.Īctivity: Find the IP addresses assigned to your computer, and your network. The postal building controls messages that travel between the Internet and the street, keeping track of messages that leave the street, and directs return messages to the right house. There is also a fence that blocks the rest of the Internet from seeing and passing messages to addresses on the street. That building has a public IP address, and a private IP address. To see an example of how public and private IP addresses are commonly used, let’s take another look at 192.168.1 Street. These buildings might be anywhere in the world, but their addresses are complete, so we know exactly where they are and can send messages to them. Here we can see an example-a street with two buildings with public IP addresses-representing computers with addresses that are visible to the entire Internet. Private IP addresses are not, and most are typically hidden behind a device with a public IP address. Public IP addresses are accessible anywhere on the Internet. A network can be public, or it can be private. There are different classifications, or types of IP addresses. The complete addresses for each of these houses is: 192.168.1. Parts of the address describe where in the world the building is located, another part narrows it down to a state or city, then the area within that state or city, then the location on the street.īelow we can see 192.168.1 Street. An example of an IP address is 173.194.43.7.Īn IP address is similar to a street address. An IP address is just a set of four numbers between 1 and 254, separated by dots. This identification is an IP-Internet Protocol-address. In order to send and direct data across a network, computers need to be able to identify destinations and origins. On a network, the server can be located almost anywhere, and if the client has the address, it can access the content on the server.Īctivity: What is one real world example of a client and server relationship: Most requests and content delivery on networks are similar to, or are based on, a client to server relationship.
The website is delivered from the server, and displayed on the client’s web browser. The client computer asks for a website from the server computer. These computers are able to see each other and communicate over the cable. In the example below, two computers are connected together with an Ethernet cable. For instance, when you request Google’s search page with your web browser, your computer is the client. The client can connect over a network to exchange information. The server holds that page, and sends it out when requested.Ī client is a different computer, such as your laptop or cell phone, that requests to view, download, or use the content. A good example of a server is the computer that holds the website for Google’s search page. A server is a computer that holds content and services such as a website, a media file, or a chat application. Clients and ServersĪn important relationship on networks is that of the server and the client. Exploring the activities and details of the subject with a group will take longer. Reading through this material should take between half an hour to an hour. Routers and firewalls-how to organize and control the flow of traffic on a network.
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This document covers the basics of how networking works, and how to use different devices to build networks.
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