1. 1. Ann wants to purchase a new computer and is looking at two models
1. Ann wants to purchase a new computer and is looking at two models. The specification of the CPU in each computer is show below. When running a 3D flight simulator, Computer 1 is likely to run faster than computer 2. Identify one reasons for this (1)
Computer 1
Computer 2
Clock Speed: 1 GHZ
Clock Speed: 1.4 GHZ
Cache Size: 2 MB
Cache Size: 2MB
Number of Cores: 4
Number of Cores: 2

2. 2. Identify two internal components not shown that could improve the performance of the two computers (2)
Computer 1
Computer 2
Clock Speed: 1 GHZ
Clock Speed: 1.4 GHZ
Cache Size: 2 MB
Cache Size: 2MB
Number of Cores: 4
Number of Cores: 2

3. 3. Explain one reasons why the cache size affects the performance of the CPU (2)
Computer 1
Computer 2
Clock Speed: 1 GHZ
Clock Speed: 1.4 GHZ
Cache Size: 2 MB
Cache Size: 2MB
Number of Cores: 4
Number of Cores: 2

4. 4. Identify four events that take place during the fetch – execute cycle (4)

5. 5. Define what is meant by secondary storage (1)

6. 6. Identify three common storage technologies (3)

7. 7. State four characteristics to consider when choosing a storage device (4)

8. 8. Give two characteristic of RAM (2)

9. 9. Give one characteristic of ROM (1)

10. 10. Define what is meant by an embedded system (1)

11. 11. Identify three devices other than a SAT NAV that contain embedded systems (3)

12. 12. A restaurant has a computer based ordering system which is running slowly. A technician said that the hard disc drive is fragmented. The technician has suggested using utility software to defragment the drive. Explain how the restaurant’s hard disc could have become fragmented (4)

13. 13. Explain how defragmentation software could overcome the issue of a slow computer system (3)

14. 14. Outline what happens when a bitmap image is stored (3)

15. 15. Outline what happens when a computer converts music into a file (2)

16. 16. Explain two effects increasing the colour depth will have (4)

17. 17. Explain two effects increasing the sample rate will have (4)

18. 18. To email an image and a sound file I am using lossless compression
18. To an image and a sound file I am using lossless compression. Explain two reasons why lossless compression is beneficial (4)

19. 19. Convert the decimal number 142 to binary (1)

20. 20. Convert the hexadecimal number 4F to a decimal number
20. Convert the hexadecimal number 4F to a decimal number. You must show your working (2)

21. 21. Add together (2)

22. 22. Complete a truth table for the statement P=NOT (A OR B) (2)

23. 23. Show the stages of a bubble sort when applied to: BRAD, OWEN, OLLIE, PAUL, JIM, JOHN, SARAH, MAI (4)

24. 24. Explain the purpose of virtual memory (3)

25. 25. Draw the logic diagram for P=NOT(A OR NOT B AND C) (2)