App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 392 · 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.🔢 When you make an app, what comes right after “plan the screens”? (a) build the app (b) test the app (c) get an idea (d) release it
2. 2.🔁 What does a loop do? (a) repeats code (b) deletes code (c) saves photos (d) draws icons
3. 3.🧰 How do you run (call) a function called greet? (a) #greet (b) greet[] (c) run greet (d) greet()
4. 4.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
5. 5.🔀 What number does this shop app show?
   let total = 310;
   if (total > 500) {
     total = total - 50;
   }
   show(total);
6. 6.🔢 In a photo-post flow, which comes first: “write a caption” or “post the photo”? (a) post the photo (b) write a caption
7. 7.Which of these is true of a menu button? (a) switches main sections (b) undoes one move (c) shows 3 to 5 icons (d) opens a list of pages
8. 8.🧭 Tapping a tab usually takes you to ___. (a) that tab’s main screen (b) a random page (c) the last app used (d) the phone settings
9. 9.👥 A cricket club app has 75 players, 215 coaches and 180 fans as users. How many more coaches than players are there?
10. 10.True or false: a medicine reminder solves no real problem. (a) True (b) False
11. 11.🧰 What is a function? (a) a type of phone (b) a screen size (c) a named block of code (d) a list of colours
12. 12.🔁 Why use a loop to show 100 messages? (a) it uses more lines (b) it hides them (c) less code to write (d) it is slower
13. 13.True or false: a free study-room finder solves a real problem. (a) True (b) False
14. 14.🧰 What number does this code show?
    function total(price, qty) {
      return price * qty;
    }
    show(total(55, 4));
15. 15.True or false: a homework planner is the best fit for a pupil juggling five projects. (a) True (b) False
16. 16.🔢 After an app is released, which comes LAST? (a) release an update (b) read user reviews (c) list what to fix (d) test it again
17. 17.🎯 Is this a user need or a feature: “I keep missing the bus”? (a) a feature (b) a user need
18. 18.Which of these is a user need? (a) a dark mode switch (b) a share button (c) a search bar (d) “What should I cook?”
19. 19.♿ A screen has 11 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
20. 20.Which of these is true of a final design? (a) looks like the real app (b) is a quick sketch (c) shows where things go (d) uses plain grey boxes
21. 21.True or false: you pick the features at the test stage. (a) True (b) False
22. 22.♿ A screen has 7 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
23. 23.💡 Does an app idea like an app that just says hi solve a real problem? (a) No (b) Yes
24. 24.Which of these is true of a final design? (a) uses plain grey boxes (b) uses the final pictures (c) has no real colours (d) shows where things go
25. 25.💡 Which app idea solves this problem: bottles go missing at school? (a) a bill splitter (b) a medicine reminder (c) a study-room finder (d) a lost-and-found board
26. 26.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
27. 27.Which of these fits saving on the phone? (a) photos on two devices (b) chat messages to friends (c) a class leaderboard (d) the sound on/off setting
28. 28.🔁 What number does this code show?
    let marks = [31, 19, 19];
    let count = 0;
    for (let i = 0; i < marks.length; i++) {
      if (marks[i] >= 40) {
        count = count + 1;
      }
    }
    show(count);
29. 29.True or false: the theme colours is about UI (the look). (a) False (b) True
30. 30.⚙️ In an app, is taking a photo an input, processing or an output? (a) input (b) output (c) processing
31. 31.✏️ Is this true of a wireframe or of a final design: uses the final pictures? (a) a final design (b) a wireframe
32. 32.💡 Which is a problem statement? (a) “Use blue buttons” (b) “Add a logo” (c) “Kids forget homework” (d) “Make it fast”
33. 33.Which of these is true of a tab bar? (a) undoes one move (b) opens a list of pages (c) shows 3 to 5 icons (d) goes to the last screen
34. 34.True or false: tap to Start is a button. (a) True (b) False
35. 35.🧩 Which of these is a button on this screen?
    [title] New Note
    [text box] Email
    [text box] Age
    [text box] Name
    [button] Next (a) Next (b) Name (c) Email (d) Age
36. 36.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Friend list”
    2. open “Score card”
    3. tap Back
    4. open “Badges”
    5. open “Help page”
    Which screen are you on now? (a) Score card (b) Badges (c) Help page (d) Friend list
37. 37.📅 An app team plans for 3 days, builds for 9 days, tests for 2 days and releases on 1 more day. How many more days does building take than testing?
38. 38.🗒️ Version 1 of a bus tracker must be ready in 10 days. How many days are left for extras after the must-haves?
    see where the bus is: 2 days
    show arrival time: 2 days
    pick your bus stop: 5 days
39. 39.👥 A cricket club app has 115 players, 80 coaches and 160 fans as users. How many users does it have in all?
40. 40.Which of these is about UI (the look)? (a) the button colours (b) how fast a task is done (c) whether users get lost (d) how users feel after

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students