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Daily Practice · GCSE Computer Science

February 1988 5-a-day

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February 1988

29 sheets · 145 questions · GCSE

February 1988 compilationAll answers

Every sheet in February 1988

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

  1. 1st February 1988State the difference between lossy and lossless compression.
  2. 2nd February 1988State the condition that must be met before a binary search can be used on an array.
  3. 3rd February 1988A 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.
  4. 4th February 1988A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
  5. 5th February 1988Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  6. 6th February 1988Describe what syntax highlighting is and how it helps a programmer.
  7. 7th February 1988Convert the denary number 45 to hexadecimal.
  8. 8th February 1988What does the acronym CPU stand for?
  9. 9th February 1988State what the term malware means.
  10. 10th February 1988Trace 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).
  11. 11th February 1988An 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).
  12. 12th February 1988Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  13. 13th February 1988Which piece of UK legislation controls how organisations must store and use people's personal data?
  14. 14th February 1988Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  15. 15th February 1988State the value returned by LENGTH(word) if word stores the string 'Computer'.
  16. 16th February 1988Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  17. 17th February 1988Explain the role of TCP when a large file is downloaded.
  18. 18th February 1988A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  19. 19th February 1988A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
  20. 20th February 1988State one function carried out by the operating system of a computer.
  21. 21st February 1988In computational thinking, what is meant by the term 'decomposition'?
  22. 22nd February 1988Given A = 1 and B = 1, state the value of A AND B.
  23. 23rd February 1988State how many different values can be represented using 5 bits, and explain your reasoning.
  24. 24th February 1988Define a peer-to-peer network.
  25. 25th February 1988Give one advantage and one disadvantage of using a compiler.
  26. 26th February 1988Convert the denary number 5 to a 4-bit binary number.
  27. 27th February 1988A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  28. 28th February 1988A 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.
  29. 29th February 1988Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.