Daily Practice · GCSE Computer Science
May 2003 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in May 2003, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in May 2003
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st May 2003An array contains [9, 2, 6], to be sorted using insertion sort. Show the state of the array after each new element has been inserted into its correct position.
- 2nd May 2003Complete: NOT 0 = ?
- 3rd May 2003Convert the denary number 200 to hexadecimal, showing your working.
- 4th May 2003State what LAN stands for.
- 5th May 2003Explain why an interpreter is often preferred while a program is being written.
- 6th May 2003An 8-bit register stores the value 01100000 (denary 96). State the resulting 8-bit binary value after a left shift by 1 place, and state whether an overflow occurs.
- 7th May 2003Which CPU register holds the address of the next instruction to be fetched?
- 8th May 2003Distinguish between the network security threats known as phishing and pharming.
- 9th May 2003A 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.
- 10th May 2003A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 11th May 2003A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 12th May 2003A streaming company records which shows each user watches and uses this to recommend similar shows. Explain one ethical concern this could raise, even if the company only uses the data to improve recommendations.
- 13th May 2003State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 14th May 2003State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
- 15th May 2003Give one example of an optical secondary storage device.
- 16th May 2003State the layer that IP operates in, and describe its job.
- 17th May 2003State the term used for realistic data that a program would be expected to handle during normal use.
- 18th May 2003Define the term 'primary key' as used in a database table.
- 19th May 2003State the difference between lossy and lossless compression.
- 20th May 2003State the condition that must be met before a binary search can be used on an array.
- 21st May 2003A 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.
- 22nd May 2003Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
- 23rd May 2003Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 24th May 2003Describe what syntax highlighting is and how it helps a programmer.
- 25th May 2003Convert the denary number 45 to hexadecimal.
- 26th May 2003What does the acronym CPU stand for?
- 27th May 2003State what the term malware means.
- 28th May 2003Trace 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).
- 29th May 2003An 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).
- 30th May 2003Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 31st May 2003Which piece of UK legislation controls how organisations must store and use people's personal data?