Daily Practice · GCSE Computer Science
March 2000 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in March 2000, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in March 2000
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 2000Give one advantage of a star topology compared with a mesh topology.
- 2nd March 2000Give one advantage and one disadvantage of using a compiler.
- 3rd March 2000Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 4th March 2000State the three stages of the fetch-decode-execute cycle in the order they occur.
- 5th March 2000State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 6th March 2000Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 7th March 2000Define the term 'pixel'.
- 8th March 2000Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 9th March 2000Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 10th March 2000Evaluate the expression 23 DIV 4.
- 11th March 2000State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 12th March 2000A 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.
- 13th March 2000A 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?
- 14th March 2000A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 15th March 2000A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
- 16th March 2000A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 17th March 2000An 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.
- 18th March 2000Complete: NOT 0 = ?
- 19th March 2000State how many different values can be represented using 5 bits, and explain your reasoning.
- 20th March 2000State what LAN stands for.
- 21st March 2000Name the translator used for assembly language and describe how it differs from a compiler.
- 22nd March 2000An 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.
- 23rd March 2000Which CPU register holds the address of the next instruction to be fetched?
- 24th March 2000Distinguish between the network security threats known as phishing and pharming.
- 25th March 2000Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 26th March 2000A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 27th March 2000A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 28th March 2000A 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.
- 29th March 2000State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 30th March 2000State the key difference between a procedure and a function.
- 31st March 2000Give one example of an optical secondary storage device.