Английский язык: Сборник текстов и упражнений. Иваненко Т.И. - 14 стр.

      III. Agree or disagree with the following statements (Use: That’s right, that’s wrong;
I think; I don’t think; to my mind; As far as I know).
      1. Your computer is connected in a LAN to all other computers in the room.
      2. Each department of your University has its own network of computers.
      3. Special-purpose computers do not connect the LAN.
      4. The job of a router is to provide link from one network to another.
      5. Routers are not used to connect LANs to form WANs.

      IV. Fill in the blanks.
      1. The ____ is a two or more computers _______together.
      2. Although ________ in establishing Internet service within developing countries
_______a reliable telephone system.
      3. Your computer ________in a LAN to all other computers.
      4. Or, for instance, each department of your University has its own network of computers,
as does the other ________
      5. Special – purpose computers called ________connect the LANs.

       V. Give 3 forms of the following verbs.
       To be, to connect, to do, to allow, to communicate, to share, to call, to develop, to estab-
lish, to imagine, to sit, to have, to form, to provide, to use, to consider.

      VI. Find synonyms among the words.
      To permit, through, backbone, although, impediment, department, connection, to allow,
bottleneck, though, to consider, faculty, reliable, sure, to think, via, link, basis.

      VII. Think and say:
      A) Discuss two reasons for using the Network; B) Compare LAN and WAN; C) Say what
routers are.




LESSON 5

                                CLIENT/SERVER SYSTEMS

       One of the principal uses of a network is to allow, as said above, the sharing of resources.
Much of time, the sharing is implemented by two separate programs, each running on different
computers.
       One program, called the server, provides a particular resource. The other program, called
the client, makes use of that resource.
       For instance, say, you are working with a word processing program that is running on your
own personal computer (PC). You tell the program that you want to edit a particular file that is
stored on another computer on your network. Your program will pass a message to that computer
asking to send the file. In this case, your word processing program is the client while the pro-
gram that accepts the request and sends the file is the server.
       On the Internet, the hardware is normally not visible, and so the terms “client” and “serv-
er” usually refer to the programs that ask for and provide services.
       Here is an important example. Many Internet sites provide a service called a “Gopher”.
Briefly, a Gopher allows you to select items from menus. Each time you select an item, the Go-
pher performs the required task. For instance, if the item describes a particular piece of informa-
tion, the Gopher will retrieve this information and display it for you.

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