Daily Practice · GCSE Computer Science
April 1973 5-a-day
Every sheet in April 1973
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 1973Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 2nd April 1973A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?
- 3rd April 1973Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 4th April 1973A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 5th April 1973Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.
- 6th April 1973Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 7th April 1973State the two values a Boolean data type can hold.
- 8th April 1973Convert the denary number 39 to an 8-bit binary number, showing your working.
- 9th April 1973Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 10th April 1973Name the translator used for assembly language and describe how it differs from a compiler.
- 11th April 1973Convert the hexadecimal number 1A to denary.
- 12th April 1973Convert the denary number 156 to an 8 bit binary number.
- 13th April 1973Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
- 14th April 1973Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 15th April 1973An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
- 16th April 1973A CPU's cache has a hit rate of 80%. During a task the CPU makes 4000 requests for data. Calculate the number of cache hits and cache misses.
- 17th April 1973Describe two negative consequences of throwing away old computer hardware instead of recycling it.
- 18th April 1973Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
- 19th April 1973Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 20th April 1973A company backs up its files onto magnetic tape cartridges, each with a capacity of 3 TB. The company needs to back up 20 TB of data. Calculate the minimum number of cartridges needed.
- 21st April 1973Define the term protocol.
- 22nd April 1973Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
- 23rd April 1973A 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.
- 24th April 1973Define the term 'interrupt' as used to describe a signal received by a CPU.
- 25th April 1973An array called items contains [12, 45, 7, 30, 19] at indices 0 to 4. Describe how a linear search would locate the value 30, stating the number of comparisons needed.
- 26th April 1973Evaluate X = NOT A AND B when A = 0 and B = 1.
- 27th April 1973Convert the hexadecimal number FF to an 8-bit binary number.
- 28th April 1973Give one advantage of a star topology compared with a mesh topology.
- 29th April 1973Explain the purpose of a breakpoint.
- 30th April 1973Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.