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Daily Practice · GCSE Computer Science

July 2001 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in July 2001, with answers. Systems, data representation, networks, algorithms and programming.

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July 2001

31 sheets · 155 questions · GCSE

July 2001 compilationAll answers

Every sheet in July 2001

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 2001Give two reasons why network communication is divided into layers.
  2. 2nd July 2001State the term used for realistic data that a program would be expected to handle during normal use.
  3. 3rd July 2001Give one advantage of a relational database over a flat-file database.
  4. 4th July 2001State the difference between lossy and lossless compression.
  5. 5th July 2001State the condition that must be met before a binary search can be used on an array.
  6. 6th July 2001A 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.
  7. 7th July 2001Convert the hexadecimal number 3F to denary.
  8. 8th July 2001Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  9. 9th July 2001Explain why an interpreter is often preferred while a program is being written.
  10. 10th July 2001Convert the denary number 45 to hexadecimal.
  11. 11th July 2001What does the acronym CPU stand for?
  12. 12th July 2001State what the term malware means.
  13. 13th July 2001A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
  14. 14th July 2001An 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).
  15. 15th July 2001Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  16. 16th July 2001Which piece of UK legislation controls how organisations must store and use people's personal data?
  17. 17th July 2001Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  18. 18th July 2001A 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.
  19. 19th July 2001Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  20. 20th July 2001State the layer that IP operates in, and describe its job.
  21. 21st July 2001A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  22. 22nd July 2001A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
  23. 23rd July 2001State one function carried out by the operating system of a computer.
  24. 24th July 2001In computational thinking, what is meant by the term 'decomposition'?
  25. 25th July 2001Given A = 1 and B = 1, state the value of A AND B.
  26. 26th July 2001Convert the denary number 39 to an 8-bit binary number, showing your working.
  27. 27th July 2001Define a peer-to-peer network.
  28. 28th July 2001Describe what syntax highlighting is and how it helps a programmer.
  29. 29th July 2001Convert the denary number 5 to a 4-bit binary number.
  30. 30th July 2001A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  31. 31st July 2001A 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.