computer-science/aqa/questions","basePath":"/gcse/computer-science/aqa/units-of-information/questions","formulaUrl":null,"initialIndex":5,"initialQuestionWindow":[{"id":"0ad7c20c-f245-43ae-81e2-b7ecf5545d34","revisionId":"79ca20d7-a882-42bb-a2c8-e5089ce64a54","questionNumber":null,"questionType":"LA","specification":"","difficulty":3,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"3dfbd9f0-21cb-487d-b670-73717a6a9c37","label":null,"content":"How many bits are there in 4 MB?\n\nShow your working.","markscheme":"- Shows a correct conversion method by multiplying 4 by $1,000$ (or $1,024$) twice, and then multiplying by $8$ (e.g. $4 \\times 1,000 \\times 1,000 \\times 8$ or $4 \\times 1,024 \\times 1,024 \\times 8$) M1\n- Obtains $32,000,000$ or $33,554,432$ A1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"105192ad-0724-4ee1-b7a8-e62ea18f04e4","revisionId":"6240ae0f-f7fc-410e-91c1-7000c857586b","questionNumber":null,"questionType":"LA","specification":"A specialized oceanographic sensor logs a dataset with a total file size of 12.5 megabytes (MB).","difficulty":3,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"c157331c-7e1d-41a1-b543-b1e8284768bb","label":null,"content":"Calculate the total number of bits in this dataset. Show your working.","markscheme":"- Shows a correct method to convert megabytes (MB) to bytes by multiplying by $1,000 \\times 1,000$ (or $1,024 \\times 1,024$) and then multiplying by $8$ to convert bytes to bits M1\n- Obtains either $100,000,000$ bits (from base-10 calculation) or $104,857,600$ bits (from base-2 calculation) A1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"1673e8c0-5e84-4a48-be24-2763b64e67be","revisionId":"1fbb6632-7197-4809-ac67-9fc2f9ee840f","questionNumber":null,"questionType":"LA","specification":"A telemetry sensor transmits a data packet of size $1.25\\text{ MB}$.","difficulty":3,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"5249f42b-1589-4c75-92d6-bb8e3bdd6ca0","label":null,"content":"Determine the total number of bits contained in this packet. Show your working.","markscheme":"- Shows a correct method to convert Megabytes to bytes by multiplying by $1,000^2$ (or $1,024^2$) and then by $8$ to convert bytes to bits M1\n- Obtains $10,000,000$ (using the decimal/base-10 system) or $10,485,760$ (using the binary/base-2 system) A1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null}],"subjectCode":"gcse_computer_science__aqa","summaries":[{"id":"006415ef-2912-4124-b619-c14a37610bbb","difficultyBand":"easy","calculatorUse":null},{"id":"00bc1718-3878-43d5-b653-89ed044b1a2c","difficultyBand":"easy","calculatorUse":null},{"id":"0642702e-8c1e-49fa-bb9b-5ec0e78f5c73","difficultyBand":"easy","calculatorUse":null},{"id":"08d13fb1-c4b7-4af8-bcf6-914564d09813","difficultyBand":"easy","calculatorUse":null},{"id":"0ad7c20c-f245-43ae-81e2-b7ecf5545d34","difficultyBand":"easy","calculatorUse":null},{"id":"105192ad-0724-4ee1-b7a8-e62ea18f04e4","difficultyBand":"easy","calculatorUse":null},{"id":"14c24c73-f5c3-4e39-8ee7-bebc5c2bbf99","difficultyBand":"medium","calculatorUse":null},{"id":"1673e8c0-5e84-4a48-be24-2763b64e67be","difficultyBand":"easy","calculatorUse":null},{"id":"256698b8-fb9a-4ec9-b1fd-111194996db4","difficultyBand":"easy","calculatorUse":null},{"id":"470b1f0f-5a97-4f68-8c25-95fb3141d2f7","difficultyBand":"easy","calculatorUse":null},{"id":"51c64a6f-a8e5-40eb-9b47-c8699bfe3f52","difficultyBand":"easy","calculatorUse":null},{"id":"71918bc9-0850-4c17-a891-235dfab1fc02","difficultyBand":"easy","calculatorUse":null},{"id":"87eeca23-eb4f-4fea-86d4-f911ee3252fa","difficultyBand":"easy",

Units of information

Question 6

Units of information Questions

Units of information

Question 6

Units of information Questions