Daily Practice · GCSE Computer Science
December 1959 5-a-day
Every sheet in December 1959
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1959An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 2nd December 1959Define the term 'pixel'.
- 3rd December 1959Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 4th December 1959Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 5th December 1959Evaluate the expression 23 DIV 4.
- 6th December 1959A programmer wants any syntax error in their program to be reported before the program starts running at all. State whether a compiler or an interpreter behaves this way, and explain why.
- 7th December 1959A 1 TB hard disk drive costs 40 pounds. A 500 GB solid-state drive costs 60 pounds. Calculate the cost per gigabyte of each device, and state which is cheaper per GB. Use 1 TB = 1000 GB.
- 8th December 1959State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 9th December 1959A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 10th December 1959A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 11th December 1959A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 12th December 1959An 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.
- 13th December 1959Complete: NOT 0 = ?
- 14th December 1959Convert the denary number 39 to an 8-bit binary number, showing your working.
- 15th December 1959State what LAN stands for.
- 16th December 1959State why a program written in a high level language must be translated.
- 17th December 1959An 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.
- 18th December 1959Which CPU register holds the address of the next instruction to be fetched?
- 19th December 1959Distinguish between the network security threats known as phishing and pharming.
- 20th December 1959Describe what a nested loop does when it processes a 2D array.
- 21st December 1959A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 22nd December 1959A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 23rd December 1959A 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.
- 24th December 1959State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 25th December 1959Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 26th December 1959Give one example of an optical secondary storage device.
- 27th December 1959Give two reasons why network communication is divided into layers.
- 28th December 1959State the term used for realistic data that a program would be expected to handle during normal use.
- 29th December 1959A 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.
- 30th December 1959State the difference between lossy and lossless compression.
- 31st December 1959State the condition that must be met before a binary search can be used on an array.