App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 499 · 40 questions

Developer's tip (Plan, design, build, check): Find the topic: what apps are, designing apps, or logic and building. Read every screen, list or code line carefully, top to bottom. For code, write each value down step by step and check it again.

1. 1.🧪 One test case fails. Which one?
   🚚 Rule: delivery is free (0) when the order is 400 or more; otherwise it costs 40.
   function delivery(total) {
     if (total > 400) {
       return 0;
     }
     return 40;
   }
   Test 1: delivery(400) → expected 0
   Test 2: delivery(250) → expected 40
   Test 3: delivery(550) → expected 0 (a) Test 3 (b) Test 2 (c) Test 1
2. 2.🔍 Which is the odd one out? (a) whether users get lost (b) the button colours (c) the icon shapes (d) the theme colours
3. 3.💾 Saving data in the cloud lets you ___. (a) skip the internet (b) shrink the app (c) never need a password (d) use it on any device
4. 4.Which of these is true of a final design? (a) shows where things go (b) is a quick sketch (c) has the real colours (d) has no real colours
5. 5.True or false: a big-text reader is the best fit for a grandparent with weak eyesight. (a) False (b) True
6. 6.True or false: a big, easy tap area is poor button design. (a) False (b) True
7. 7.👆 What kind of event is this: the app starts up? (a) a tap event (b) a timer event (c) a text event (d) a load event
8. 8.Which of these is data? (a) your high score (b) the settings page (c) the log-in page (d) tap to Start
9. 9.🧩 How many inputs (text boxes, switches and sliders) does this screen have?
   [title] New Note
   [text box] Email
   [switch] Dark mode
   [button] Cancel
   [button] Done
   [slider] Brightness
   [text box] Name
10. 10.🔍 Which is the odd one out? (a) taking a photo (b) adding up a bill (c) typing your age (d) tapping a button
11. 11.🔍 Which is the odd one out? (a) talk to possible users (b) put it on an app store (c) list what users need (d) spot a problem to solve
12. 12.🔁 list.length tells you ___. (a) the biggest item (b) how many items it has (c) the first item (d) the last item
13. 13.🔐 A torch app asks for your contacts. What should you do? (a) deny it (b) post them online (c) allow it (d) share them all
14. 14.🗒️ You are planning version 1 of a water reminder. Which feature can WAIT for a later version? (a) set a reminder time (b) see today’s total (c) log a glass of water (d) water animations
15. 15.Which of these fits saving in the cloud? (a) a draft you are typing (b) your last game level (c) the sound on/off setting (d) a class leaderboard
16. 16.🔍 Which is the odd one out? (a) checking a password (b) a result on screen (c) working out a tip (d) adding up a bill
17. 17.🧰 What number does this code show?
    function triple(n) {
      return n * 3;
    }
    show(triple(5));
18. 18.💾 What number does this code show?
    let score = 3;
    score = score - 2;
    score = score + 4;
    show(score);
19. 19.True or false: a guitar tuner needs your contacts. (a) True (b) False
20. 20.True or false: speaking a command is an input. (a) True (b) False
21. 21.🎯 Who are the users of an app? (a) the people who use it (b) only the coders (c) only the testers (d) the app icons
22. 22.🔢 In a food-order flow, which comes FIRST? (a) track the order (b) open the menu (c) pick a dish (d) pay for the order
23. 23.🖼️ In this wireframe (top to bottom), what is right above the tab bar?
    [ title text ]
    [ search box ]
    [ list of items ]
    [ Add button ]
    [ filter buttons ]
    [ tab bar ] (a) Add button (b) filter buttons (c) search box (d) list of items
24. 24.🔀 In this course’s code, which sign tests “is equal to”? (a) = (b) => (c) !== (d) ===
25. 25.🔍 Which is the odd one out? (a) sorting the scores (b) speaking a command (c) checking a password (d) adding up a bill
26. 26.🔍 Which is the odd one out? (a) how fast a task is done (b) how many taps it takes (c) the theme colours (d) how easy sign-up is
27. 27.Which of these helps everyone use the app? (a) icons with no labels (b) strong colour contrast (c) sudden loud sounds (d) colour as the only clue
28. 28.True or false: buttons almost touching is good button design. (a) False (b) True
29. 29.🎨 Is this about UI or UX: the icon shapes? (a) UI (b) UX
30. 30.🗒️ You are planning version 1 of a pocket-money tracker. Which feature can WAIT for a later version? (a) add money received (b) show the balance (c) add money spent (d) export to a file
31. 31.🧪 A test case is an input together with its ___. (a) font size (b) screen colour (c) app icon (d) expected result
32. 32.Which of these requests asks for too much? (a) calling app → contacts (b) quiz app → microphone (c) map app → location (d) camera app → camera
33. 33.Which of these is about UX (the experience)? (a) the font size (b) the screen layout (c) the button colours (d) how easy sign-up is
34. 34.🗒️ You are planning version 1 of a pocket-money tracker. Which feature is a MUST-HAVE? (a) savings stickers (b) pie-chart colours (c) export to a file (d) add money received
35. 35.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Score card”
    2. open “Match report”
    3. open “Edit photo”
    4. open “Badges”
    5. open “Help page”
    Which screen are you on now? (a) Score card (b) Help page (c) Match report (d) Edit photo
36. 36.👥 A library app has 150 readers, 65 librarians and 260 volunteers as users. Which user group is the biggest? (a) readers (b) volunteers (c) librarians
37. 37.Which of these helps everyone use the app? (a) sudden loud sounds (b) captions on videos (c) icons with no labels (d) fast-flashing lights
38. 38.✏️ Is this true of a wireframe or of a final design: shows where things go? (a) a final design (b) a wireframe
39. 39.🖼️ How many parts (boxes) does this wireframe have?
    [ top bar ]
    [ big picture ]
    [ search box ]
    [ Save button ]
40. 40.Which of these is a feature? (a) “What should I cook?” (b) “I keep missing the bus” (c) “I forget my homework” (d) a share button

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