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  1. Reading Exercises:

Exercise 1. Read and memorize using a dictionary:

recover, lossy, inconveniently, decompress, live feed, accommodate, repetitive, prerecorded

Exercise 2. Answer the questions:

  1. How does an ordinary modem operate?

  2. Why do high frequencies suffer a loss of amplitude and transmission speed?

  3. Why does downloading and playing large audio and video files take an inconveniently long time?

Exercise 3. Are these sentences true or false?

  1. ZIP and GIF are the most common lossly formats for text and graphics, respectively.

  2. To accept streaming data, the receiving computer needs to be running a player.

  3. The “modulator/demodulator” thus makes it possible for existing communications channels to support a variety of analog communications, including e-mail, Internet access, and fax transmissions

Exercise 4. Match the left part with the right:

1. Lossless compression scans

a) communications at over twice that rate, and cable modems and DSL lines have transmission rates of over a million bits per second.

2. ISDN lines allow

b) the data for repetitive sequences or regions and replaces them with a single “token.”

3. Digital computers use

c) “conversations” between interested participants.

4. Bulletin boards produce

d) a modem to transform outgoing digital electronic data.

THE SPEAKING MODULE

II. Speaking Exercises:

Exercise 1. Define the terms using the suggested words and expressions as in example:

Information science

Data compression

Streaming

Bulletin-board system

Data transmission  

discipline, deals with, processes, storing,transferring, information

process, reducing, amount, data , storage, transmission, given, piece , information, typically, encoding, techniques.

method transmitting, media, file, continuous, stream, data

computerized, system, used, exchange, public messages, files.

sending, receiving, data,via, cables wireless, relay, systems.

EXAMPLE: Information science is a discipline that deals with the processes of storing and transferring information.

Exercise 2. Ask questions to the given answers:

  1. Question: ___________________________________________ ?

Answer: With a single “token.”

  1. Question: ___________________________________________ ?

Answer : A live feed over the Internet.

  1. Question: ___________________________________________

Answer: Over a million bits per second.

  1. Question: ___________________________________________ ?

Answer: JPEG and MPEG.

  1. Question: ___________________________________________ ?

Answer: ZIP and GIF.

THE WRITING MODULE

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