Daily Practice · GCSE Computer Science
March 2004 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in March 2004, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in March 2004
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 2004State the two values a Boolean data type can hold.
- 2nd March 2004Convert the denary number 200 to hexadecimal, showing your working.
- 3rd March 2004Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 4th March 2004Give one advantage and one disadvantage of using a compiler.
- 5th March 2004Convert the hexadecimal number 1A to denary.
- 6th March 2004Convert the denary number 156 to an 8 bit binary number.
- 7th March 2004Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
- 8th March 2004Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 9th March 2004An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
- 10th March 2004A 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.
- 11th March 2004Describe two negative consequences of throwing away old computer hardware instead of recycling it.
- 12th March 2004Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
- 13th March 2004State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
- 14th March 2004A 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.
- 15th March 2004A 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?
- 16th March 2004Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
- 17th March 2004Define the term 'primary key' as used in a database table.
- 18th March 2004Define the term 'interrupt' as used to describe a signal received by a CPU.
- 19th March 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.
- 20th March 2004Evaluate X = NOT A AND B when A = 0 and B = 1.
- 21st March 2004Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
- 22nd March 2004Give one advantage of a star topology compared with a mesh topology.
- 23rd March 2004Name the translator used for assembly language and describe how it differs from a compiler.
- 24th March 2004Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 25th March 2004State the three stages of the fetch-decode-execute cycle in the order they occur.
- 26th March 2004State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 27th March 2004Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 28th March 2004Define the term 'pixel'.
- 29th March 2004Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 30th March 2004Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 31st March 2004Evaluate the expression 23 DIV 4.