omputer-science/aqa/questions","basePath":"/gcse/computer-science/aqa/character-encoding/questions","formulaUrl":null,"initialIndex":11,"initialQuestionWindow":[{"id":"bd9f907f-9886-48b3-a7fd-7b7d1fafd021","revisionId":"a79d2440-90d2-4e65-b5bb-06eed758e03d","questionNumber":null,"questionType":"MC","specification":"Shade one lozenge to show what value would be returned from the subroutine call `CODE_TO_CHAR(0x53)` if the character set used is standard ASCII.","difficulty":6,"difficultyBand":"easy","totalMarks":1,"sourceTitle":null,"calculatorUse":null,"parts":[],"options":[{"id":"1101706e-93ed-4f3e-ba27-e5190ef9e6e4","content":"$$\\text{'5'}$","correct":false,"markscheme":"Incorrectly assumes the input $0x53$ is the denary value 53. In standard ASCII, 53 represents the character '5'.","order":0},{"id":"7e8d2a53-21f3-4c56-a6ba-e775e100fd0b","content":"$$\\text{'R'}$","correct":false,"markscheme":"Represents denary value 82, which is an off-by-one error or calculation mistake.","order":1},{"id":"b59e6f01-0cbe-4e27-a6d4-47b0a6c87f56","content":"$$\\text{'S'}$","correct":true,"markscheme":"Correct. $0x53$ is denary 83, which corresponds to the ASCII character 'S'.","order":2},{"id":"1e8d55de-e340-42ca-911b-c16f6066dea3","content":"$$\\text{'T'}$","correct":false,"markscheme":"Represents denary value 84, which is an off-by-one error or calculation mistake.","order":3}],"explanation":null,"firstAttemptFullMarks":null},{"id":"c33691e4-94d8-4fcc-85d3-36c3525da3ff","revisionId":"52319fa9-59f4-45c8-95fc-fab3fa281ebe","questionNumber":null,"questionType":"LA","specification":"The ASCII value for the lowercase character **k** is represented in hexadecimal as $6\\text{B}_{16}$.","difficulty":5,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"87fb320c-8e9f-4b93-a5d0-27fb29d96ddb","label":null,"content":"Complete the table with the missing ASCII and Unicode decimal values.\n\n| Character | ASCII (decimal) value | Unicode (decimal) value |\n| :--- | :--- | :--- |\n| **i** | | |\n| **j** | | |\n| **k** | | |\n| **l** | | |","markscheme":"- Converts hexadecimal $6\\text{B}_{16}$ to decimal $107$ to establish the base ASCII value for **k** (or demonstrates understanding of alphabetical offsets relative to this value) M1\n- Correctly completes all table entries, showing that Unicode decimal values are identical to ASCII decimal values for these standard characters:\n - **i**: ASCII = 105, Unicode = 105\n - **j**: ASCII = 106, Unicode = 106\n - **k**: ASCII = 107, Unicode = 107\n - **l**: ASCII = 108, Unicode = 108 A1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"d15716d4-13c9-40c3-bb62-dea28f1f3a04","revisionId":"23c62a0e-4a74-4cbe-8ec4-2d6f5d11d7e6","questionNumber":null,"questionType":"LA","specification":"A software company is developing a global travel booking application. They have decided to use Unicode rather than standard 7-bit ASCII to represent text characters in their system.","difficulty":3,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"554a7fa1-fc37-4fe2-af7d-d5d3a9577f4b","label":null,"content":"State **two** advantages of using Unicode instead of ASCII for this application.","markscheme":"- States that Unicode has a larger character set / supports a much larger number of unique character codes (e.g. over 65,000 characters compared to ASCII's 128 characters) B1\n- States that Unicode allows multi-lingual text / characters from different global writing systems to be represented consistently in the same document B1\n- States that Unicode supports modern symbols, technical symbols, or emojis B1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null}],"subjectCode":"gcse_computer_s

Character encoding

Question 10

Character encoding Questions

Character encoding

Question 10

Character encoding Questions