Daily Practice · GCSE Computer Science
November 2004 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in November 2004, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in November 2004
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 2004Define the term 'interrupt' as used to describe a signal received by a CPU.
- 2nd November 2004An 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.
- 3rd November 2004Evaluate X = NOT A AND B when A = 0 and B = 1.
- 4th November 2004Convert the hexadecimal number 3F to denary.
- 5th November 2004Give one advantage of a star topology compared with a mesh topology.
- 6th November 2004Describe what syntax highlighting is and how it helps a programmer.
- 7th November 2004Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 8th November 2004State the three stages of the fetch-decode-execute cycle in the order they occur.
- 9th November 2004State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 10th November 2004Trace this algorithm with data = [4, 9, 2, 9, 7] and state the final output. total = 0; count = 0; for i = 0 to 4: if data[i] > 5 then total = total + data[i] and count = count + 1; next i; print(total, count).
- 11th November 2004Define the term 'pixel'.
- 12th November 2004Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 13th November 2004Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 14th November 2004Evaluate the expression 23 DIV 4.
- 15th November 2004A 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.
- 16th November 2004A 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.
- 17th November 2004Explain the role of TCP when a large file is downloaded.
- 18th November 2004A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 19th November 2004A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 20th November 2004A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 21st November 2004An 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.
- 22nd November 2004Complete: NOT 0 = ?
- 23rd November 2004Convert the denary number 39 to an 8-bit binary number, showing your working.
- 24th November 2004State what LAN stands for.
- 25th November 2004Give one advantage and one disadvantage of using a compiler.
- 26th November 2004An 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.
- 27th November 2004Which CPU register holds the address of the next instruction to be fetched?
- 28th November 2004Distinguish between the network security threats known as phishing and pharming.
- 29th November 2004Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 30th November 2004A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.