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Daily Practice · GCSE Computer Science

March 1969 5-a-day

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March 1969

31 sheets · 155 questions · GCSE

March 1969 compilationAll answers

Every sheet in March 1969

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

  1. 1st March 1969Describe what syntax highlighting is and how it helps a programmer.
  2. 2nd March 1969Convert the 4-bit binary number 1101 to denary.
  3. 3rd March 1969Two 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.
  4. 4th March 1969State why an organisation might employ penetration testers to test its network.
  5. 5th March 1969Trace this algorithm with data = [4, 9, 2, 9, 7] and state the final output. total = 0; count = 0; for i = 0 to 4: if data[i] > 5 then total = total + data[i] and count = count + 1; next i; print(total, count).
  6. 6th March 1969State one example of a file format that commonly uses lossy compression.
  7. 7th March 1969State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  8. 8th March 1969State whether the source code of proprietary (closed source) software is normally available for the public to view.
  9. 9th March 1969Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  10. 10th March 1969State the correct order of the three operations used to read data from a text file.
  11. 11th March 1969Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
  12. 12th March 1969Explain the role of TCP when a large file is downloaded.
  13. 13th March 1969Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
  14. 14th March 1969A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
  15. 15th March 1969Each 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.
  16. 16th March 1969Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
  17. 17th March 1969State the two values a Boolean data type can hold.
  18. 18th March 1969Convert the denary number 200 to hexadecimal, showing your working.
  19. 19th March 1969Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
  20. 20th March 1969Give one advantage and one disadvantage of using a compiler.
  21. 21st March 1969Convert the hexadecimal number 1A to denary.
  22. 22nd March 1969Convert the denary number 156 to an 8 bit binary number.
  23. 23rd March 1969Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
  24. 24th March 1969Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  25. 25th March 1969An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
  26. 26th March 1969A 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.
  27. 27th March 1969Describe two negative consequences of throwing away old computer hardware instead of recycling it.
  28. 28th March 1969Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
  29. 29th March 1969State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  30. 30th March 1969A company backs up its files onto magnetic tape cartridges, each with a capacity of 3 TB. The company needs to back up 20 TB of data. Calculate the minimum number of cartridges needed.
  31. 31st March 1969A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?