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Daily Practice · GCSE Computer Science

February 1978 5-a-day

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February 1978

28 sheets · 140 questions · GCSE

February 1978 compilationAll answers

Every sheet in February 1978

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 1978Give one example of an optical secondary storage device.
  2. 2nd February 1978Name the four layers of the TCP/IP model in order from the one closest to the user.
  3. 3rd February 1978State the term used for realistic data that a program would be expected to handle during normal use.
  4. 4th February 1978State what a foreign key is used for.
  5. 5th February 1978State the difference between lossy and lossless compression.
  6. 6th February 1978State the condition that must be met before a binary search can be used on an array.
  7. 7th February 1978A 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.
  8. 8th February 1978A 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.
  9. 9th February 1978Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  10. 10th February 1978A 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.
  11. 11th February 1978Convert the denary number 45 to hexadecimal.
  12. 12th February 1978What does the acronym CPU stand for?
  13. 13th February 1978State what the term malware means.
  14. 14th February 1978An array named temps holds 12 values. State the index of the first item and the index of the last item.
  15. 15th February 1978An 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).
  16. 16th February 1978Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  17. 17th February 1978Which piece of UK legislation controls how organisations must store and use people's personal data?
  18. 18th February 1978Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  19. 19th February 1978State the value returned by LENGTH(word) if word stores the string 'Computer'.
  20. 20th February 1978Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  21. 21st February 1978State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  22. 22nd February 1978A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  23. 23rd February 1978A 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.
  24. 24th February 1978State one function carried out by the operating system of a computer.
  25. 25th February 1978In computational thinking, what is meant by the term 'decomposition'?
  26. 26th February 1978Given A = 1 and B = 1, state the value of A AND B.
  27. 27th February 1978State how many different values can be represented using 5 bits, and explain your reasoning.
  28. 28th February 1978Define a peer-to-peer network.