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Daily Practice · GCSE Computer Science

July 2006 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in July 2006, with answers. Systems, data representation, networks, algorithms and programming.

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July 2006

31 sheets · 155 questions · GCSE

July 2006 compilationAll answers

Every sheet in July 2006

The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.

  1. 1st July 2006Give one advantage of a relational database over a flat-file database.
  2. 2nd July 2006State the difference between lossy and lossless compression.
  3. 3rd July 2006State the condition that must be met before a binary search can be used on an array.
  4. 4th July 2006A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
  5. 5th July 2006Convert the hexadecimal number 3F to denary.
  6. 6th July 2006Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  7. 7th July 2006A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.
  8. 8th July 2006Convert the denary number 45 to hexadecimal.
  9. 9th July 2006What does the acronym CPU stand for?
  10. 10th July 2006State what the term malware means.
  11. 11th July 2006An array named temps holds 12 values. State the index of the first item and the index of the last item.
  12. 12th July 2006An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
  13. 13th July 2006Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  14. 14th July 2006Which piece of UK legislation controls how organisations must store and use people's personal data?
  15. 15th July 2006Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  16. 16th July 2006A programmer wants any syntax error in their program to be reported before the program starts running at all. State whether a compiler or an interpreter behaves this way, and explain why.
  17. 17th July 2006Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  18. 18th July 2006State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  19. 19th July 2006A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  20. 20th July 2006A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
  21. 21st July 2006State one function carried out by the operating system of a computer.
  22. 22nd July 2006In computational thinking, what is meant by the term 'decomposition'?
  23. 23rd July 2006Given A = 1 and B = 1, state the value of A AND B.
  24. 24th July 2006Convert the denary number 39 to an 8-bit binary number, showing your working.
  25. 25th July 2006Define a peer-to-peer network.
  26. 26th July 2006State why a program written in a high level language must be translated.
  27. 27th July 2006Convert the denary number 5 to a 4-bit binary number.
  28. 28th July 2006A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  29. 29th July 2006A simple cipher shifts every letter 2 places forward in the alphabet, wrapping around so Y becomes A and Z becomes B. Encrypt the plaintext CAT using this cipher.
  30. 30th July 2006Describe what a nested loop does when it processes a 2D array.
  31. 31st July 2006A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.