【正文】 nd/ocean symbolism above. Telnet refers to accessing ports on a server directly with a text connection. Almost every kind of Internet function, like accessing web pages,chatting, and ing is done over a Telnet connection. Telnetting requires a Telnet client. A telnet program es with the Windows system, so Windows users can access telnet by typing in telnet (without the 39。 is a mon remark made by new webusers. Sometimes websites have errors. But an error on a website is not the user39。s where the tricky part es in. First, the puter sends data about it39。on line39。Internet39。 itself. The Internet cannot just crash. It functions the same way as the telephone system, only there is no Internet pany that runs the Internet. The Internet is a collection of millioins of puters that are all connected to each other, or have the means to connect to each other. The Internet is just like an office network, only it has millions of puters connected to it. The main thing about how the Internet works is munication. How does a puter in Houston know how to access data on a puter in Tokyo to view a webpage? Internet munication, munication among puters connected to the Internet, is based on a language. This language is called TCP/IP. TCP/IP establishes a language for a puter to access and transmit data over the Internet system. But TCP/IP assumes that there is a physical connecetion between one puter and another. This is not usually the case. There would have to be a network wire that went to every puter connected to the Internet, but that would make the Internet impossible to access. The physical connection that is requireed is established by way of modems,phonelines, and other modem cable connections (like cable modems or DSL). Modems on puters read and transmit data over established lines,which could be phonelines or data lines. The actual hard core connections are established among puters called routers. A router is a puter that serves as a traffic controller for information. To explain this better, let39。re reading this right now means that you have a web browser. Next you must be familiar with actually using webpages. A webpage is a collection of hyperlinks, images, text, forms, menus, and multimedia. To navigate a webpage, simply click the links it provides or follow it39。t know who it is, don39。d search for dog or dogs or dog information. Here are a few searchengines. 1. Altavista () Web spider amp。re in. Metasearch searches many search engines at the same time, finding the top choices from about 10 search engines, making searching a lot more effective.Once you are able to use search engines, you can effectively find the pages you want. With the arrival of networking and multi user systems, security has always been on the mind of system developers and system operators. Since the dawn of ATamp。這項(xiàng)工程的目的，是為了建立遠(yuǎn)距離之間點(diǎn)與點(diǎn)的通信，以便處理國家軍事范圍內(nèi)的緊急事件，例如核戰(zhàn)爭。到了1984年，它就已經(jīng)超過1000臺(tái)主機(jī)在線了。另外還有其他網(wǎng)絡(luò)被建立，并支持用戶以驚人的數(shù)量接入。工作原理：現(xiàn)在，人們用Internet是一件很平常的事。位于Houston的一臺(tái)計(jì)算機(jī)是如何通過瀏覽網(wǎng)頁而能與位于Tokyo的計(jì)算機(jī)進(jìn)行數(shù)據(jù)通信的呢？Internet信息，擁有信息的計(jì)算機(jī)連接到Internet，是基于語言。事實(shí)上計(jì)算機(jī)之間建立連接的硬核被成為路由器。世界上所有路由的連接便形成了Internet的主干，在這里傳送Internet上的所有數(shù)據(jù)。當(dāng)信息到達(dá)目標(biāo)網(wǎng)頁的服務(wù)器是，服務(wù)器就開始將網(wǎng)頁信息發(fā)送回去。當(dāng)你在瀏覽網(wǎng)頁時(shí)，其實(shí)就是在使用瀏覽器。當(dāng)然網(wǎng)站的錯(cuò)誤跟用戶的操作沒有關(guān)系。所以，你應(yīng)該為你的瀏覽器升級到新的版本。附件是與信一起發(fā)過來的文件，如果有人發(fā)給你帶有附件的郵件，但你不知道他是誰，就不要打開那個(gè)附件。這就是國際互聯(lián)網(wǎng)。遠(yuǎn)程登陸需要一個(gè)遠(yuǎn)程登陸客戶服務(wù)器。搜索工具是一個(gè)非常龐大的網(wǎng)站，它使你能夠搜尋它自有的網(wǎng)站數(shù)據(jù)庫。編入索引的收集使用手動(dòng)附加鏈接。黑客就是一直尋找途徑侵入系統(tǒng)的人。這里有個(gè)問題：當(dāng)信息通過這巨大的支柱被傳遞時(shí)，怎樣防止黑客在支柱的某一點(diǎn)上攔截?cái)?shù)據(jù)流？你接入網(wǎng)站時(shí)哥哥不會(huì)看著你，但用戶在傳遞私人信息時(shí)應(yīng)該清楚潛在的威脅。一個(gè)文件被侵入并被解碼，但這是一個(gè)需14000臺(tái)電腦進(jìn)入互聯(lián)網(wǎng)系統(tǒng)的綜合的努力過程，并需要花一段時(shí)間來做。加密指將數(shù)據(jù)攪亂成只能在另一終端才能譯出的密碼。現(xiàn)今最大的問題是個(gè)人信息。你可以點(diǎn)擊“電腦和網(wǎng)絡(luò)”，再點(diǎn)擊“硬件”，然后點(diǎn)擊“貓”（調(diào)制解調(diào)器）等等。這里有一些搜索引擎：1. Altavista () Web spider amp。s）來接入遠(yuǎn)程登陸軟件。那么島嶼就有接收和發(fā)送船只的港口。用戶不會(huì)通過閱讀郵件而被傳染病毒，你不得不運(yùn)行殺毒軟件來防止病毒感染。電子郵件能使人們互相收發(fā)信件，甚至是文件和圖片。這有可能是因?yàn)榫W(wǎng)站仍在建設(shè)中，頁面還沒有被創(chuàng)建，或者是因?yàn)榫W(wǎng)站的制作者正在對頁面進(jìn)行修改。接下來你就必須熟悉如何使用網(wǎng)頁。網(wǎng)頁被分成數(shù)據(jù)報(bào)，通過路由器，最終到達(dá)用戶計(jì)算機(jī)，這樣，用戶就能瀏覽網(wǎng)頁了。這樣的速度分配到一只MODEM上，就好比太陽光的熱量分配到一塊冰上的熱量一樣。為了更好的對它說明，讓我們來看看一臺(tái)標(biāo)準(zhǔn)的計(jì)算機(jī)是怎樣瀏覽網(wǎng)頁的？用戶計(jì)