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Daily Practice · GCSE Computer Science

December 2006 - GCSE Computer Science 5-a-day

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

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December 2006

31 sheets · 155 questions · GCSE

December 2006 compilationAll answers

Every sheet in December 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 December 2006What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  2. 2nd December 2006Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  3. 3rd December 2006Given P = 0 and Q = 1, state the value of P OR Q.
  4. 4th December 2006Convert the hexadecimal number 3F to denary.
  5. 5th December 2006A network administrator is connecting 10 computers in a server room. Calculate the number of cables needed for a full mesh topology, and state the number needed for a star topology with one central switch.
  6. 6th December 2006State why a program written in a high level language must be translated.
  7. 7th December 2006Convert the 4-bit binary number 1101 to denary.
  8. 8th December 2006Two CPUs are compared for a task optimised for multiple cores: CPU A has 2 cores at 4.2 GHz; CPU B has 6 cores at 3.0 GHz. Explain which CPU is likely to perform better for this task.
  9. 9th December 2006State why an organisation might employ penetration testers to test its network.
  10. 10th December 2006Describe what a nested loop does when it processes a 2D array.
  11. 11th December 2006State one example of a file format that commonly uses lossy compression.
  12. 12th December 2006State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  13. 13th December 2006State whether the source code of proprietary (closed source) software is normally available for the public to view.
  14. 14th December 2006Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  15. 15th December 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.
  16. 16th December 2006Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
  17. 17th December 2006Give two reasons why network communication is divided into layers.
  18. 18th December 2006Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
  19. 19th December 2006A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
  20. 20th December 2006Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.
  21. 21st December 2006Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
  22. 22nd December 2006State the two values a Boolean data type can hold.
  23. 23rd December 2006Convert the denary number 39 to an 8-bit binary number, showing your working.
  24. 24th December 2006Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
  25. 25th December 2006Explain why an interpreter is often preferred while a program is being written.
  26. 26th December 2006Convert the hexadecimal number 1A to denary.
  27. 27th December 2006Convert the denary number 156 to an 8 bit binary number.
  28. 28th December 2006Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
  29. 29th December 2006A 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.
  30. 30th December 2006An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
  31. 31st December 2006A CPU's cache has a hit rate of 80%. During a task the CPU makes 4000 requests for data. Calculate the number of cache hits and cache misses.