Daily Practice · GCSE Computer Science
September 1988 5-a-day
Every sheet in September 1988
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1988State what LAN stands for.
- 2nd September 1988A 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.
- 3rd September 1988An 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.
- 4th September 1988Which CPU register holds the address of the next instruction to be fetched?
- 5th September 1988Distinguish between the network security threats known as phishing and pharming.
- 6th September 1988An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 7th September 1988A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 8th September 1988A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 9th September 1988A 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.
- 10th September 1988State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 11th September 1988Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 12th September 1988Give one example of an optical secondary storage device.
- 13th September 1988State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 14th September 1988State the term used for realistic data that a program would be expected to handle during normal use.
- 15th September 1988A table called members has fields memberId, firstName, lastName and joinYear. Write an SQL statement that adds a new record with memberId 12, firstName 'Priya', lastName 'Shah' and joinYear 2026.
- 16th September 1988State the difference between lossy and lossless compression.
- 17th September 1988State the condition that must be met before a binary search can be used on an array.
- 18th September 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.
- 19th September 1988Convert the hexadecimal number FF to an 8-bit binary number.
- 20th September 1988Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 21st September 1988State why a program written in a high level language must be translated.
- 22nd September 1988Convert the denary number 45 to hexadecimal.
- 23rd September 1988What does the acronym CPU stand for?
- 24th September 1988State what the term malware means.
- 25th September 1988Describe what a nested loop does when it processes a 2D array.
- 26th September 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).
- 27th September 1988Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 28th September 1988Which piece of UK legislation controls how organisations must store and use people's personal data?
- 29th September 1988Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 30th September 1988State the correct order of the three operations used to read data from a text file.