Английский язык: Сборник текстов и упражнений. Иваненко Т.И. - 17 стр.

      VI. Find antonyms among the words.
      To ask, personal, visible, to start, to forbid, common, different, to answer, request, to al-
low, not visible, to misunderstand, command, correctly, to send, wrong, to finish, same, to re-
ceive, to understand.

     VII. Think and say:
     A) Speak in a few words about “the client” and “the server”, beginning with: “As far as I
know “the client” is … but from the other point of view, “ the server” is…. “B) Discuss what
you must understand to use an Internet service.




LESSON 6

            FOUR IMPORTANT SERVICES PROVIDED BY THE INTERNET

       The software that supports the Internet provides a large number of technical services upon
which everything is built. Most of these services operate behind the scenes, and you do not need to
understand them. Nevertheless, there are four important Internet services we do need to talk about.
       First, the mail service reliably transmits and receives a message. Each message is sent from
one computer to another on its way to a final destination. Behind the scenes, the mail service en-
sures that the message arrives intact at the correct address.
       The next service, called Telnet, allows you to establish a terminal session with a remote
computer. For example, you can use Telnet to connect to a host on the other side of the world.
Once the connection is made, you can log in to that computer in the regular manner. Telnet also
allows two programs to work cooperatively by exchanging data over the Internet.
       The third service is called FTP (File Transfer Protocol). FTP allows you to transfer files
from one computer to another. Most of the time, you will use FTP to copy a file from a remote
host to your computer. This process is called downloading. However, you can also transfer files
from your computer to a remote host. This is called uploading. To remember the difference be-
tween “uploading” and “downloading”, think of the remote host as floating above you in the sky.
You send files up, and you ask for files to be sent down.
       The last Internet service is the general client/server facility we discussed earlier. A client
program can connect to another computer and for the help of a server program.
       For example, the Gopher system we mentioned earlier works in just this way. Your Gopher
client displays a menu for you. When you make a selection from the menu, the client connects to the
appropriate server – no matter where it is on the Internet – and procures the service you requested.
       Downloading refers to copying files from the remote host to your computer. Uploading re-
fers to copying files from your computer to the remote host.

      NOTES

     1. Once the connection is made – как только соединение установлено
     2. To log in – входить в систему, начинать сеанс
     3. You send files up, and you ask for files to be sent down – вы посылаете файлы
«вверх», т. е. к удаленному компьютеру, и просите, чтобы файлы отправили «вниз», т. е. к
вашему компьютеру
     4. In just this way – именно таким способом
     5. No matter where it is on the Internet – неважно, где именно он находится в Интернете
     6. And procures the service you requested – и обеспечивает услугу (функцию), кото-
рую вы запросили

                                                 17