Chapter 5 Exercises and Answersfull

Chapter 5 Exercises and Answersfull - Chapter 5 Exercises...

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Chapter 5 Exercises and Answers For exercises 1–16, match the power of 10 to its name or use. A. 10–12 B. 10–9 C. 10–6 D. 10–3 E. 103 F. 106 G. 109 H. 1012 I. 1015 1. Nano B 2. Pico A 3. Micro C 4. Milli D 5. Tera H 6. Giga G 7. Kilo E 8. Mega F 9. Often used to describe processor speed G 10. Often used to describe size of memory F 11. Used in relation to Internet speeds E 12. Latin for “thousand”
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D 13. Spanish for “little” A 14. Peta I 15. Roughly equivalent to 210 E 16. Roughly equivalent to 250 I For exercises 17–23, match the acronym with its most accurate definition. A. CD-ROM B. CD-DA C. CD-WORM D. DVD E. CD-RW F. CD 17. Generic compact disk that is recorded during manufacturing F 18. Data is stored in the sectors reserved for timing information in another variant A 19. Can be read many times, but written after its manufacture only once C 20. Can be both read from and written to any number of times E 21. Format used in audio recordings B 22. There is one tract that spirals from the inside out F 23. A newer technology that can store large amounts of multimedia data
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Exercises 24–64 are problems or short answer exercises. 24. Define the following terms: a. Pentium IV processor The Pentium IV is a popular central processing unit made by Intel. b. hertz A hertz is a unit of frequency equal to one cycle per second. c. random access memory Random access memory is memory in which each word has an address by which the word can be directly accessed. 25. What is the word length in the Pentium IV processor? The word length of the Pentium IV processor is 32 bits or 4 bytes. 26. What does it mean to say that a processor is 1.4 GHz? The speed of the processor is 1, 400,000,00 cycles per second. 27. What does it mean to say that memory is 133 MHz? Saying a memory is 133Mhz means that the memory can be accessed at 133,000,000 cycles per second. 28. How many bytes of memory are there in the following machines? a. 128MB machine 128 * 220 42 Answers to Exercises 41493_ANSx_DaleLewis.qxd 12/19/06 10:16 AM Page 42 b. 256MB machine 256* 220 29. Define RPM and discuss what it means in terms of speed of access to a disk. RPM stands for revolutions per minute. This is a measure of how fast a disk revolves. Data can only be accessed when the reading head is over the data. Therefore the RPM indicates how fast each piece of data can be accessed. 30. What is the stored-program concept, and why is it important?
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Chapter 5 Exercises and Answersfull - Chapter 5 Exercises...

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