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3. Complete the sentences. Retell the text, using the answers.

  1. In the world there are a lot of network operating systems. Among the most successful system are ...

  2. All these system can restrict the rights of customers' file servers ...

  3. Currently most operating systems support a variety of networking protocols, ...

  4. Networks can essentially allow a computer operating system to access the resources of a remote computer to support the same function ...

  5. Client/server networking involves a programm on a computer somewhere which connects ....

  6. Many operating systems support one or more vendor-specific or open networking protocols as well, for example, ...

4. Match the words and word-combinations from the columns.

  1. diverse а) домен

  2. disincentive b) файловый сервер

  3. counterpart c) ядро

  4. domain d) препятствие

  5. file server e) защищенность

  6. workstation f) разнообразный

  7. security g) копия,дубликат

  8. kernel h) рабочий узел

5. Look through the text and say whether these statements are true, false or not mentioned:

  1. One of these systems meets the criteria of safety, reliability and security.

  2. Operating systems include Novell DOS, Windows for Workgroups, Windows 95-98, Windows NT Workstation.

  3. Many operating systems support three vendor-specific or open networking protocols.

  4. The most successful system are Unix, Novell Net Ware, Windows NT Server.

  5. Client networking involves a programm on a computer somewhere which connects via a network to another computer, called a server.

6. Answer the questions.

  1. What is an operating system? It's purpose.

  2. What is the most popular operating system among the Windows family? Why?

  3. How many operating systems do you know?

  4. Can all these system restrict the rights of customers' file servers to allocate resources of the workstations?

Text 28 a modem

The piece of equipment that allows a computer to communicate with other computers over telephone lines is called a modem. The modem allows the individual to access information from all over the world and uses that information in everyday life, connecting with banks, automatic teller machines, cash registers to read credit cards, access travel agents, buy products, e-mail, access databases, and teleconferencing, the modems provide easy access to many services.

Files can be transferred easily, by uploading to another machine, or downloading to your own machine within a matter of minutes. The computer modem can be used as a telephone answering system, and documents can be faxed from one computer to another assuring fast and easy access to important documents.

A modem takes computer information and changes it into a signal that can be sent over telephone lines. The modem is a bridge between digital and analog signals. The computer is of the digital type, and the telephone uses analog technology. The modem converts the "0"s and "1"s of the computer (off-on switches) into an analog signals modulating the frequency of the electronic wave or signal. The modem does just the opposite and demodulates the signal back into digital code. The modem gets its name from Modulate and the DEModulate.

Most people believe that you need a separate phone line for a modem, but that is not true. Your modem and telephone can share one line, the problem arises when someone else needs to use the telephone while the modem is in use. Also disable call waiting, it could disrupt your modem connection while the modem is in use.

There are three kinds of modems -internal, external, and fax. All modems do the same thing, they allow computers to communicate through telephone lines. This lets computers exchange information everywhere. Internal Modem is a circuit board that plugs into one of the expansion slots of the computer. Internal modems usually are cheaper than external modems, but when problems occur, fixing and troubleshooting the modem can sometimes prove to be quite difficult.

1. Define the main idea of the text:

  1. The piece of equipment.

  2. Modulate and the DEModulate.

  3. A telephone answering system.

  4. The modem is a bridge between computers.

2. Define the main idea of each paragraph.

3. Mach the English words with their Russian equivalents:

  1. fixing 1. устранение неполадок

  2. troubleshooting 2. разрывать

  3. exchange 3. передача

  4. disrupt 4. обмен

  5. transfer 5. фиксация

4. Find words in the text mean the same as the following:

    1. equipment that allows a computer to communicate with other computers over telephone lines

    2. a bridge between digital and along signals

    3. internal, external and fax

    4. a circuit board that plugs into one of the expansion slots of the computer.

5. Answer the questions.

  1. What does the modem allow?

  2. Can the computer modem be used as a telephone answering system?

  3. How does the modem change the information?

  4. Is the modem a bridge between digital and analog signals?

  5. What kinds of modem do you know?

6. Look through the text and find the English equivalents of the following word:

банковские автоматы, телеконференции, базы данных доступа, внутренние, внешние, факсимильные.

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