| Bots crawl along the backbone, swinging from server | | | | between computers on the Internet. You can |
| to server and round a few routers. If this makes no | | | | download files from web pages, but FTP is a more |
| sense at all, you need to get acquainted with some | | | | efficient means of doing it. |
| technical Net terms. | | | | Firewall |
| Applet | | | | A security setup that prevents unauthorized users |
| A small java application designed to run on a web | | | | gaining entry to a private network, such as a |
| page. Java is a programming language that can be | | | | corporate network. |
| used to produce games and utilities such as currency | | | | Gateway |
| converters. Applets are downloaded by your browser | | | | A computer that controls access on to the Internet - |
| and run on your computer. | | | | for example, you'll go through a gateway computer |
| Arpanet | | | | to get to the Net from your company's local area |
| The Advanced Research Project Agency NETwork. | | | | network. This means your system administrator can |
| Arpanet was a military network built by the US | | | | monitor all your Net activities - so watch out. |
| government at the height of the Cold War, and was | | | | Hop |
| designed to withstand a possible nuclear attack. | | | | A connection between computers during the transfer |
| Arpanet was the forerunner to today's Internet. | | | | of information across the Net. Data travels on the |
| Backbone | | | | Net from computer to computer - from your |
| The main data highway that carries enormous | | | | computer, to your ISP's, to a web site computer, |
| numbers of bits and bytes around the world. These | | | | and so on. Depending on computer activity around |
| are the high speed connections that cross the globe | | | | the world, there can be any number of hops |
| and form the top level of the network hierarchy that | | | | between you and, say, a web page you want to |
| in turn forms the Net. | | | | retrieve. The more hops there are, the longer it will |
| Bot | | | | take to retrieve information. |
| A program designed to search the Net for | | | | Hypertext Markup Language (HTML) |
| information automatically. Many of the search engines | | | | The mark-up language used to create web pages. |
| use bots to scout the Net for URLs and appropriate | | | | HTML consists of formatting commands which a |
| keywords to include in their database. There are also | | | | browser reads, and then uses to display the web |
| IRC Bots, and Bots designed by hackers to do | | | | pages accordingly. |
| various tasks. | | | | Hypertext Transfer Protocol (HTTP) |
| Client Server | | | | The protocol used to transfer HTML documents |
| Describes the relationship between two different | | | | across the Net. When there's an 's' on the end, giving |
| computers. One computer, the client, requests | | | | https at the start of a web address, you have |
| information from another computer, the server. The | | | | accessed a secure server and are transferring files |
| server gives, the client takes. When you access a | | | | securely. |
| web page, your client computer requests that page | | | | Off Line |
| from a web server. | | | | When you are not connected to the Internet. |
| Domain Name | | | | Online |
| Identifies a computer connected to the Net. Domain | | | | When you are connected to the Internet. |
| names typically consist of a host name such as | | | | Ping |
| netmag, followed by a top level domain category, | | | | Or packet InterNet Groper, to be precise. It's a small |
| such as .com, .co, .org, and then perhaps a country | | | | program that can send a test message to a server |
| abbreviation, like uk. Domain names are easy to | | | | to see whether it exists. |
| remember aliases for numerical IP addresses. | | | | Router |
| Domain Name Systems | | | | A computer that redirects data - your ISP has a |
| A bit like a phone book of Internet addresses. Every | | | | router that'll send your Net requests in the right |
| Net address or, to use its proper name, IP address, | | | | direction. Also known as a switch. |
| consists of a series of digits, such as 194.217.172.1. It | | | | Server |
| isn't easy to remember a series of digits, for each | | | | A computer that handles requests from client |
| website you want to visit, so the Domain Name | | | | machines. Mail servers deliver mail, FTP servers give |
| System was created. This is a database system that | | | | out files, web servers store web pages. |
| looks up Internet addresses based upon domain | | | | Secure Server |
| names. | | | | A computer that handles encrypted data for secure |
| Download | | | | transactions, for example, when you buy something |
| When you downloading something from the Net - | | | | online you are connected to a secure server so your |
| web page or a piece of software - you are | | | | credit card details cannot be read by anyone else. |
| transferring it to your computer from another | | | | Upload |
| computer. | | | | To transfer data from your computer to another |
| File Transfer Protocol (FTP) | | | | computer. |
| A protocol that enables files to be transferred | | | | |