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Information Theory – The Big Idea IELTS Reading Answers Information Theory – The Big Idea IELTS Reading Answers
Information Theory – The Big Idea IELTS Reading Answers

Information Theory – The Big Idea IELTS Reading Answers

The Academic passage ‘Information Theory – The Big Idea’ is a reading passage that appeared in an IELTS Test. Read the passage below and answer questions 1 – 14. Beyond the questions, you will find the answers along with the location of the answers in the passage and the keywords that  help you find out the answers.

Information Theory – The Big Idea

Information theory - the big idea - 0001

Information theory - the big idea - 0002

Information theory - the big idea - 0003

Information theory - the big idea - 0004

Information theory - the big idea - 0005

Information theory - the big idea - 0006

Answers

Question number  Answer  Keywords  Location of keywords
1 D noise sets a limit on the rate at which information can pass along communication channels while remaining error-free Paragraph D;

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2 F by stripping out superfluous (‘redundant’) bits from data which contributed little real information Paragraph F;

Line 1

3 B While at Bell Laboratories, Shannon developed information theory, but shunned the resulting acclaim Paragraph B;

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4 E uses a simple error-detecting system that ensures supermarket check-out lasers can read the price even on, say, a crumpled bag of crisps. Paragraph E;

Line 3

5 A In April 2002 an event took place which demonstrated one of the many applications of information theory. Paragraph A;

Line 1

6 C He set out with an apparently simple aim: to pin down the precise meaning of the concept of ‘information’ Paragraph C;

Line 2

7 Jupiter and Saturn IN EITHER ORDER;  The space probe, Voyager I, launched in 1977, had sent back spectacular images of Jupiter and Saturn Paragraph A;

Line 2

8 Solar System The space probe, Voyager I, launched in 1977, had sent back spectacular images of Jupiter and Saturn and then soared out of the Solar System Paragraph A;

Line 2

9 sensors and circuits IN EITHER ORDER Sensors and circuits were on the brink of failing Paragraph A;

Line 4

10 spares The solution was to get a message to Voyager I to instruct it to use spares to change the failing parts. Paragraph A;

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11 radio dish By means of a radio dish belonging to NASA’s Deep Space Network, the message was sent out into the depths of space Paragraph A;

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12 TRUE Having identified this fundamental unit, Shannon set about defining otherwise vague ideas about information and how to transmit it from place to place. Paragraph C;

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13 TRUE This rate depends on the relative strengths of the signal and noise travelling down the communication channel, and on its capacity (its ‘bandwidth’) Paragraph D;

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14 FALSE As recently as 1993, engineers made a major breakthrough by discovering so-called turbo codes – which come very close to Shannon’s ultimate limit for the maximum rate that data can be transmitted reliably, and now play a key role in the mobile videophone revolution. Paragraph E;

Last line

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