App Dev Worksheet: Part 1 Test

App development lesson 8: What apps are: Part 1 test · Set 43 · 40 questions

Developer's tip (Name the topic): First decide which topic the question is about. Use that lesson’s rule: count, order, match or work it out. Read every line of a screen or a code snippet before you answer.

1. 1.⚙️ Which line does the processing (works out the answer)?
   line 1: let bill = 45; // typed by the user
   line 2: let friends = 3; // typed by the user
   line 3: let share = bill / friends;
   line 4: show(share); (a) line 3 (b) line 2 (c) line 4 (d) line 1
2. 2.True or false: a torch is a health app. (a) True (b) False
3. 3.Which of these is true of an app? (a) has a web address (b) opens in a web browser (c) is installed on a phone (d) needs no installing
4. 4.🧩 Which of these is a button on this screen?
   [title] Edit Profile
   [text box] Age
   [slider] Volume
   [button] Start
   [button] Cancel
   [text box] Email (a) Age (b) Cancel (c) Email (d) Volume
5. 5.🧩 In an app, what is tap to Save? (a) data (b) a button (c) a screen (d) an input
6. 6.🎯 Is this a user need or a feature: “What should I cook?”? (a) a user need (b) a feature
7. 7.True or false: a medicine reminder solves no real problem. (a) False (b) True
8. 8.🗒️ Version 1 of a pocket-money tracker must be ready in 15 days. How many days are left for extras after the must-haves?
   add money received: 2 days
   add money spent: 4 days
   show the balance: 3 days
9. 9.True or false: a blank grey screen solves no real problem. (a) True (b) False
10. 10.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    forgetting homework: 8 votes
    forgetting birthdays: 7 votes
    no quiet study place: 24 votes (a) forgetting homework (b) no quiet study place (c) forgetting birthdays
11. 11.📊 Survey: which problem bugs you most? Which problem should your app solve first?
    no quiet study place: 9 votes
    losing water bottles: 11 votes
    missing the bus: 21 votes (a) no quiet study place (b) missing the bus (c) losing water bottles
12. 12.⚙️ What number does this app show?
    let price = 520; // typed by the user
    let off = 10; // typed by the user
    let pay = price - off;
    show(pay);
13. 13.Which of these app ideas solves a real problem? (a) a blank grey screen (b) a library due-date alert (c) a button with no action (d) an app that just says hi
14. 14.⚙️ What number does this app show?
    let price = 75; // typed by the user
    let qty = 2; // typed by the user
    let total = price * qty;
    show(total);
15. 15.True or false: a recipe finder is the best fit for a grandparent with weak eyesight. (a) False (b) True
16. 16.🗒️ Version 1 of a bus tracker must be ready in 14 days. How many days are left for extras after the must-haves?
    see where the bus is: 1 days
    show arrival time: 3 days
    pick your bus stop: 4 days
17. 17.👥 A library app has 300 readers, 205 librarians and 100 volunteers as users. How many users does it have in all?
18. 18.🗒️ You are planning version 1 of a bus tracker. Which feature can WAIT for a later version? (a) pick your bus stop (b) show arrival time (c) see where the bus is (d) rate the driver
19. 19.📱 Which one needs no installing: an app or a website? (a) an app (b) a website
20. 20.🧩 In an app, what is the settings page? (a) a button (b) a screen (c) data (d) an input
21. 21.🎯 An app for “everyone” with no clear user usually ___. (a) wins every prize (b) helps nobody well (c) needs no testing (d) is easy to build
22. 22.True or false: a box to type a name is an input. (a) False (b) True
23. 23.Which of these is processing? (a) working out a tip (b) a pop-up message (c) typing your age (d) a buzz (vibration)
24. 24.⚙️ Which line does the processing (works out the answer)?
    line 1: let price = 35; // typed by the user
    line 2: let qty = 6; // typed by the user
    line 3: let total = price * qty;
    line 4: show(total); (a) line 4 (b) line 1 (c) line 3 (d) line 2
25. 25.🎯 Why learn about users before you build? (a) to pick a logo (b) to slow it down (c) to make it longer (d) to build what they need
26. 26.🧩 What does a button do when you tap it? (a) shows the time (b) starts an action (c) changes the phone (d) saves the battery
27. 27.True or false: an app has a web address. (a) True (b) False
28. 28.🗒️ Version 1 of a homework planner must be ready in 15 days. How many days are left for extras after the must-haves?
    add a homework task: 2 days
    set a due date: 4 days
    see tasks by day: 3 days
29. 29.📴 Which of these can often still work with no internet? (a) a new website (b) an online search (c) an installed app (d) a video call
30. 30.⚙️ Which line does the processing (works out the answer)?
    line 1: let price = 45; // typed by the user
    line 2: let qty = 3; // typed by the user
    line 3: let total = price * qty;
    line 4: show(total); (a) line 3 (b) line 2 (c) line 4 (d) line 1
31. 31.Which of these is true of a website? (a) comes from an app store (b) has a web address (c) has a home-screen icon (d) is installed on a phone
32. 32.🗒️ You are planning version 1 of a quiz app. Which feature is a MUST-HAVE? (a) check the answer (b) an avatar shop (c) confetti effects (d) background music
33. 33.🗒️ Version 1 of a water reminder must be ready in 8 days. How many days are left for extras after the must-haves?
    set a reminder time: 1 days
    log a glass of water: 1 days
    see today’s total: 5 days
34. 34.🛠️ At which stage do you write the store text? (a) the test stage (b) the idea stage (c) the plan stage (d) the release stage
35. 35.📱 Which one has a home-screen icon: an app or a website? (a) an app (b) a website
36. 36.🧩 In an app, what is your saved notes? (a) an input (b) a screen (c) a button (d) data
37. 37.🧩 Scores, notes and settings that an app keeps are called ___. (a) data (b) tabs (c) screens (d) buttons
38. 38.🧩 Which of these is a button on this screen?
    [title] Add Homework
    [slider] Brightness
    [text box] Age
    [button] Help (a) Age (b) Brightness (c) Help
39. 39.⚙️ In an app, is a beep sound an input, processing or an output? (a) processing (b) input (c) output
40. 40.True or false: tap to Save is a button. (a) False (b) True

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