Revision Library
/Subjects/Computer Science/Daily Practice
Daily Practice · GCSE Computer Science

August 1980 5-a-day

← Today's GCSE Computer Science sheet

August 1980

31 sheets · 155 questions · GCSE

August 1980 compilationAll answers

Every sheet in August 1980

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

  1. 1st August 1980Give one example of an optical secondary storage device.
  2. 2nd August 1980Define the term protocol.
  3. 3rd August 1980State the term used for realistic data that a program would be expected to handle during normal use.
  4. 4th August 1980State what a foreign key is used for.
  5. 5th August 1980State the difference between lossy and lossless compression.
  6. 6th August 1980State the condition that must be met before a binary search can be used on an array.
  7. 7th August 1980A 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 August 1980A 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 August 1980Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  10. 10th August 1980Explain the purpose of a breakpoint.
  11. 11th August 1980Convert the denary number 45 to hexadecimal.
  12. 12th August 1980What does the acronym CPU stand for?
  13. 13th August 1980State what the term malware means.
  14. 14th August 1980Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  15. 15th August 1980An 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 August 1980Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  17. 17th August 1980Which piece of UK legislation controls how organisations must store and use people's personal data?
  18. 18th August 1980Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  19. 19th August 1980State the value returned by LENGTH(word) if word stores the string 'Computer'.
  20. 20th August 1980Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  21. 21st August 1980Name the four layers of the TCP/IP model in order from the one closest to the user.
  22. 22nd August 1980A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  23. 23rd August 1980A 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 August 1980State one function carried out by the operating system of a computer.
  25. 25th August 1980In computational thinking, what is meant by the term 'decomposition'?
  26. 26th August 1980Given A = 1 and B = 1, state the value of A AND B.
  27. 27th August 1980State how many different values can be represented using 5 bits, and explain your reasoning.
  28. 28th August 1980Define a peer-to-peer network.
  29. 29th August 1980A 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.
  30. 30th August 1980Convert the denary number 5 to a 4-bit binary number.
  31. 31st August 1980A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.