App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 599 · 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.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Home tab
   2. tap the Profile tab
   3. open “Edit photo”
   4. open “Friend list”
   Which screen are you on now? (a) Search (b) Home (c) Edit photo (d) Friend list
2. 2.Which colour pair is hard to read? (a) white on black (b) white on dark green (c) black on pale grey (d) dark blue on black
3. 3.🎯 Which app would help this user most: a student who often misses the school bus? (a) a water reminder (b) a pocket-money tracker (c) a homework planner (d) a bus tracker
4. 4.Which of these is a user need? (a) a reminder alarm (b) a search bar (c) a dark mode switch (d) “I forget my homework”
5. 5.💡 How can you check that people really have the problem? (a) just guess (b) pick a colour (c) ask possible users (d) copy another app
6. 6.👆 What kind of event is this: a finger hits Like? (a) a timer event (b) a text event (c) a tap event (d) a load event
7. 7.🗂️ What kind of app is an alarm clock? (a) a health app (b) a tool app (c) a game (d) a learning app
8. 8.🗒️ You are planning version 1 of a quiz app. Which feature can WAIT for a later version? (a) show the score (b) show a question (c) background music (d) check the answer
9. 9.🧰 What number does this code show?
   function double(n) {
     return n * 2;
   }
   show(double(37));
10. 10.True or false: you share the download link at the release stage. (a) False (b) True
11. 11.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 72 px tall
    Cancel button: 44 px tall
    Send button: 72 px tall (a) Back (b) Send (c) Cancel
12. 12.💾 What does this code show? (Positions start at 0.)
    let songs = ["Stars", "Monsoon", "Ocean", "Sunrise", "Rain"];
    show(songs[1]); (a) Sunrise (b) Monsoon (c) Stars (d) Ocean
13. 13.🚀 A change from version 1.4.2 to 1.4.3 usually means ___. (a) a new app (b) a new feature (c) a big redesign (d) a bug fix
14. 14.🔢 When you make an app, what comes right after “get an idea”? (a) release it (b) test the app (c) plan the screens (d) build the app
15. 15.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. tap the Profile tab
    3. open “Badges”
    Which screen are you on now? (a) Search (b) Profile (c) Badges (d) Home
16. 16.True or false: a draft you are typing fits saving on the phone. (a) False (b) True
17. 17.🔢 In a food-order flow, what comes right after “add it to the cart”? (a) pick a dish (b) pay for the order (c) open the menu (d) check the cart
18. 18.🔘 Is this good or poor button design: a tiny 20 px button? (a) good design (b) poor design
19. 19.True or false: a recipe finder is the best fit for a student who often misses the school bus. (a) True (b) False
20. 20.🧭 Which part of navigation opens a list of pages? (a) a menu button (b) the back button (c) a tab bar
21. 21.🎯 Why learn about users before you build? (a) to slow it down (b) to make it longer (c) to pick a logo (d) to build what they need
22. 22.📱 The word “app” is short for ___. (a) apparatus (b) application (c) appetite (d) appointment
23. 23.🗒️ You are planning version 1 of a water reminder. Which feature can WAIT for a later version? (a) see today’s total (b) custom alert sounds (c) set a reminder time (d) log a glass of water
24. 24.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
25. 25.👆 The user types Arjun in nameBox and taps the button 1 time. What does the label show?
    button.onTap = function () {
      label.text = "Hi, " + nameBox.text + "!";
    }; (a) Hi! (b) Arjun (c) Hi, Arjun! (d) Hi, nameBox.text!
26. 26.👆 The user taps the button 2 times. What number does the label show now?
    let lives = 8;
    button.onTap = function () {
      lives = lives + 3;
      label.text = lives;
    };
27. 27.Which of these happens at the build stage? (a) try every button (b) put it on an app store (c) connect the data (d) draw the user flow
28. 28.🎯 Is this a user need or a feature: a dark mode switch? (a) a user need (b) a feature
29. 29.🔍 Which is the odd one out? (a) a calculator (b) a step counter (c) a torch (d) an alarm clock
30. 30.🎯 Which app would help this user most: a reader who finds small print hard? (a) a water reminder (b) a recipe finder (c) a big-text reader (d) a pocket-money tracker
31. 31.🧪 One test case fails. Which one?
    📝 Rule: a quiz is passed with 7 or more right answers.
    function result(right) {
      if (right > 7) {
        return "Pass";
      }
      return "Try again";
    }
    Test 1: result(7) → expected Pass
    Test 2: result(9) → expected Pass
    Test 3: result(4) → expected Try again (a) Test 2 (b) Test 3 (c) Test 1
32. 32.💡 Does an app idea like a page of random dots solve a real problem? (a) Yes (b) No
33. 33.🔐 Is this permission request fair or too much: torch → contacts? (a) fair (b) too much
34. 34.🔀 With if / else if / else, how many parts run? (a) all of them (b) two (c) only one (d) none
35. 35.🔢 After an app is released, what comes right after “read user reviews”? (a) fix and improve (b) test it again (c) list what to fix (d) release an update
36. 36.🐞 Each comment says what its line SHOULD do. Which line has the bug?
    line 1: let stars = 36; // start at 33
    line 2: stars = stars - 2; // take away 2
    line 3: stars = stars - 3; // take away 3
    line 4: show(stars); // show it (a) line 2 (b) line 1 (c) line 3
37. 37.True or false: a wireframe has no real colours. (a) True (b) False
38. 38.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
    [ top bar ]
    [ menu icon ]
    [ tab bar ]
    [ Add button ] (a) top bar (b) Add button (c) tab bar (d) menu icon
39. 39.✏️ Is this true of a wireframe or of a final design: has no real colours? (a) a wireframe (b) a final design
40. 40.Which of these app ideas solves no real problem? (a) a library due-date alert (b) a medicine reminder (c) a free study-room finder (d) a page of random dots

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