Daily Practice · GCSE Computer Science
November 1999 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in November 1999, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in November 1999
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 1999A 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?
- 2nd November 1999Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
- 3rd November 1999Give one advantage of a relational database over a flat-file database.
- 4th November 1999Define the term 'interrupt' as used to describe a signal received by a CPU.
- 5th November 1999An 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.
- 6th November 1999Evaluate X = NOT A AND B when A = 0 and B = 1.
- 7th November 1999Convert the hexadecimal number 3F to denary.
- 8th November 1999Give one advantage of a star topology compared with a mesh topology.
- 9th November 1999Name the translator used for assembly language and describe how it differs from a compiler.
- 10th November 1999Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 11th November 1999State the three stages of the fetch-decode-execute cycle in the order they occur.
- 12th November 1999State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 13th November 1999Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 14th November 1999Define the term 'pixel'.
- 15th November 1999Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 16th November 1999Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 17th November 1999Evaluate the expression 23 DIV 4.
- 18th November 1999A 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.
- 19th November 1999A 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.
- 20th November 1999Define the term protocol.
- 21st November 1999A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 22nd November 1999A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 23rd November 1999A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 24th November 1999An 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.
- 25th November 1999Complete: NOT 0 = ?
- 26th November 1999Convert the denary number 39 to an 8-bit binary number, showing your working.
- 27th November 1999State what LAN stands for.
- 28th November 1999Explain the purpose of a breakpoint.
- 29th November 1999An 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.
- 30th November 1999Which CPU register holds the address of the next instruction to be fetched?