Information Theory – The Big Idea IELTS Reading Answers
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The Academic passage ‘The Big Idea’ is a reading passage that appeared in an IELTS Test.
It contains some of the IELTS reading question types. If you are interested in familiarising yourself with all the question types, don’t hesitate to take an IELTS reading practice test.
Information Theory – The Big Idea
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| 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;
Line 3 |
| 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;
Line 4 |
| 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;
Line 5 |
| 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;
Line 7 |
| 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;
Line 4 |
| 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;
Line 4 |
| 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;
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