Daily Practice · GCSE Computer Science
May 1999 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in May 1999, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in May 1999
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st May 1999A 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.
- 2nd May 1999Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 3rd May 1999Explain why an interpreter is often preferred while a program is being written.
- 4th May 1999Convert the denary number 45 to hexadecimal.
- 5th May 1999What does the acronym CPU stand for?
- 6th May 1999State what the term malware means.
- 7th May 1999A 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.
- 8th May 1999An 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).
- 9th May 1999Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 10th May 1999Which piece of UK legislation controls how organisations must store and use people's personal data?
- 11th May 1999Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 12th May 1999State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 13th May 1999Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 14th May 1999State the layer that IP operates in, and describe its job.
- 15th May 1999A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 16th May 1999A 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.
- 17th May 1999State one function carried out by the operating system of a computer.
- 18th May 1999In computational thinking, what is meant by the term 'decomposition'?
- 19th May 1999Given A = 1 and B = 1, state the value of A AND B.
- 20th May 1999State how many different values can be represented using 5 bits, and explain your reasoning.
- 21st May 1999Define a peer-to-peer network.
- 22nd May 1999Describe what syntax highlighting is and how it helps a programmer.
- 23rd May 1999Convert the denary number 5 to a 4-bit binary number.
- 24th May 1999A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
- 25th May 1999A 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.
- 26th May 1999Trace 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).
- 27th May 1999A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
- 28th May 1999State the type of program that is typically stored in ROM.
- 29th May 1999State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
- 30th May 1999A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
- 31st May 1999State the key difference between a procedure and a function.