App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 898 · 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.🔢 In a photo-post flow, which comes FIRST? (a) post the photo (b) write a caption (c) add a filter (d) open the camera screen
2. 2.♿ What should every icon-only button have for screen readers? (a) a text label (b) a sound (c) a bright colour (d) a long animation
3. 3.🔀 In this course’s code, which sign tests “is equal to”? (a) !== (b) === (c) = (d) =>
4. 4.True or false: one second passes is a tap event. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) captions on videos (b) labels on every icon (c) icons with no labels (d) text that can grow
6. 6.🔀 Why plan the user flow before building? (a) to hide the buttons (b) so each step is clear (c) to skip testing (d) to add more taps
7. 7.💾 Where should the app save a shared to-do list: on the phone or in the cloud? (a) in the cloud (b) on the phone
8. 8.📲 What happens when you tap an app’s icon? (a) the app is deleted (b) the app opens (c) the phone charges (d) the sound turns off
9. 9.🐞 A comment in code (after //) is for ___. (a) the battery (b) the app store (c) people reading the code (d) the phone screen
10. 10.True or false: a lost-and-found board solves no real problem. (a) False (b) True
11. 11.🔐 Which permission does a homework photo scanner really need? (a) contacts (b) the microphone (c) location (d) the camera
12. 12.Which of these is true of an app? (a) has a home-screen icon (b) opens from a link (c) has a web address (d) needs no installing
13. 13.🧩 Which part lets the user give the app information? (a) a logo (b) an icon (c) an input (d) a title
14. 14.👆 The user types Meera in nameBox and taps the button 1 time. What does the label show?
    button.onTap = function () {
      label.text = "Hello, " + nameBox.text + "!";
    }; (a) Hello, nameBox.text! (b) Hello, Meera! (c) Hello! (d) Meera
15. 15.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. open “Badges”
    2. open “Match report”
    3. tap Back
    Which screen are you on now? (a) Match report (b) Home (c) Badges (d) Search
16. 16.🔁 What number does this code show?
    let scores = [9, 3, 19];
    let total = 0;
    for (let i = 0; i < scores.length; i++) {
      total = total + scores[i];
    }
    show(total);
17. 17.🖼️ In this wireframe (top to bottom), what is right above the menu icon?
    [ search box ]
    [ title text ]
    [ menu icon ]
    [ big picture ]
    [ Add button ]
    [ top bar ] (a) Add button (b) top bar (c) title text (d) search box
18. 18.True or false: a tiny 20 px button is poor button design. (a) False (b) True
19. 19.👆 The user types Aman in nameBox and taps the button 1 time. What does the label show?
    button.onTap = function () {
      label.text = "Hello, " + nameBox.text + "!";
    }; (a) Hello, Aman! (b) Hello, nameBox.text! (c) Aman (d) Hello!
20. 20.🛠️ At which stage do you pick the features? (a) the release stage (b) the build stage (c) the idea stage (d) the plan stage
21. 21.True or false: icons with no meaning is good button design. (a) True (b) False
22. 22.👆 Two designs for the same task (each arrow is one tap). How many taps does Design B need?
    Design A: Home → Pay → Item → Results → Pens → Search
    Design B: Home → Item → Address → Pay → Cart
23. 23.🔐 Which permission does a bus tracker really need? (a) the microphone (b) the camera (c) location (d) contacts
24. 24.👆 The user taps the button 4 times. What number does the label show now?
    let points = 9;
    button.onTap = function () {
      points = points + 4;
      label.text = points;
    };
25. 25.👥 A library app has 245 readers, 165 librarians and 295 volunteers as users. How many more volunteers than librarians are there?
26. 26.🗂️ What kind of app is a cricket run chase? (a) a health app (b) a tool app (c) a game (d) a learning app
27. 27.🔀 With if / else if / else, how many parts run? (a) all of them (b) two (c) only one (d) none
28. 28.👆 What kind of event is this: one second passes? (a) a text event (b) a tap event (c) a load event (d) a timer event
29. 29.📊 Survey: which problem bugs you most? How many more votes did “no quiet study place” get than “losing water bottles”?
    no quiet study place: 25 votes
    losing water bottles: 17 votes
    missing the bus: 9 votes
30. 30.🧪 How many of these test cases pass?
    📝 Rule: a quiz is passed with 5 or more right answers.
    function result(right) {
      if (right > 5) {
        return "Pass";
      }
      return "Try again";
    }
    Test 1: result(5) → expected Pass
    Test 2: result(6) → expected Pass
    Test 3: result(2) → expected Try again
31. 31.🔍 Which is the odd one out? (a) how easy sign-up is (b) how many taps it takes (c) the theme colours (d) whether users get lost
32. 32.🗒️ Version 1 of a quiz app must be ready in 9 days. How many days are left for extras after the must-haves?
    show a question: 1 days
    check the answer: 2 days
    show the score: 5 days
33. 33.Which of these is a feature? (a) a search bar (b) “Small text is hard” (c) “I keep missing the bus” (d) “I forget my homework”
34. 34.🗂️ What kind of app is a racing challenge? (a) a learning app (b) a health app (c) a game (d) a tool app
35. 35.👥 A school app has 100 students, 255 teachers and 270 parents as users. Which user group is the biggest? (a) teachers (b) students (c) parents
36. 36.Which of these is true of a final design? (a) uses plain grey boxes (b) has the real colours (c) shows where things go (d) has no real colours
37. 37.Which of these is about UI (the look)? (a) how fast a task is done (b) how many taps it takes (c) how easy sign-up is (d) the theme colours
38. 38.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Menu → Offers
    Design B: Home → Offers → Shop → Pens → Pay (a) Design B (b) Design A
39. 39.🖼️ In this wireframe (top to bottom), what is right above the Add button?
    [ big picture ]
    [ menu icon ]
    [ search box ]
    [ tab bar ]
    [ Add button ]
    [ list of items ] (a) menu icon (b) tab bar (c) search box (d) big picture
40. 40.🗒️ A to-do app with no “add a task” feature is ___. (a) ready to release (b) missing a must-have (c) well planned (d) a nice extra

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