Daily Practice · GCSE Computer Science
September 1973 5-a-day
Every sheet in September 1973
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1973Define the term protocol.
- 2nd September 1973A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 3rd September 1973A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 4th September 1973A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 5th September 1973An 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.
- 6th September 1973Complete: NOT 0 = ?
- 7th September 1973Convert the denary number 39 to an 8-bit binary number, showing your working.
- 8th September 1973State what LAN stands for.
- 9th September 1973Explain the purpose of a breakpoint.
- 10th September 1973An 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.
- 11th September 1973Which CPU register holds the address of the next instruction to be fetched?
- 12th September 1973Distinguish between the network security threats known as phishing and pharming.
- 13th September 1973Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 14th September 1973A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 15th September 1973A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 16th September 1973A 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.
- 17th September 1973State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 18th September 1973Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 19th September 1973Give one example of an optical secondary storage device.
- 20th September 1973Name the four layers of the TCP/IP model in order from the one closest to the user.
- 21st September 1973State the term used for realistic data that a program would be expected to handle during normal use.
- 22nd September 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.
- 23rd September 1973State the difference between lossy and lossless compression.
- 24th September 1973State the condition that must be met before a binary search can be used on an array.
- 25th September 1973A 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.
- 26th September 1973Convert the hexadecimal number FF to an 8-bit binary number.
- 27th September 1973Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 28th September 1973A 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.
- 29th September 1973Convert the denary number 45 to hexadecimal.
- 30th September 1973What does the acronym CPU stand for?