GCSE Computer Science Revision
Quiz by PBATES
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60 questions
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- Q1What is an algorithm?A step by step set of instructions to solve a problem or complete a task30s
- Q2Which of the following is NOT one of the three key programming constructs?IterationSelectionDefinitionSequence30s
- Q3What is the purpose of decomposition?To break a large problem into smaller sub-problems, making it easier to solve.30s
- Q4Which of the following is a search algorithm which divides the list of values in two?Selection searchQuick searchBinary searchLinear search30s
- Q5Computers use binary to represent which two concepts?Information & Requests1s & 0sData & Instructions30s
- Q6What is an advantage of Unicode over ASCII?Unicode has more characters.30s
- Q7What is a disadvantage of Unicode compared to ASCII?Unicode takes up more storage space30s
- Q8In binary, how does a signed integer differ to an unsigned integer?The Most Significant Bit represents the sign of the number.30s
- Q930s
- Q10What is the purpose of hexadecimal?To represent 4 digit binary numbers as a single digit hexadecimal number.30s
- Q11What is 228 in binary?1110011011100010111001011110010030s
- Q12What is -56 in binary?1100100030s
- Q13What is 11001010 in hexadecimal?DBCBDACA30s
- Q14What is the purpose of abstraction?To remove unwanted details from a problem30s
- Q15What is a benefit of presenting an algorithm in a pseudocode format?It can be understood by programmers and non-programmers30s