App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 812 · 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.💾 Where should the app save the sound on/off setting: on the phone or in the cloud? (a) in the cloud (b) on the phone
2. 2.🎯 Which app would help this user most: a grandparent with weak eyesight? (a) a bus tracker (b) a big-text reader (c) a homework planner (d) a water reminder
3. 3.🎨 Is this about UI or UX: how many taps it takes? (a) UX (b) UI
4. 4.Which of these app ideas solves a real problem? (a) a blank grey screen (b) an app that just says hi (c) a medicine reminder (d) a button with no action
5. 5.Which of these is about UI (the look)? (a) the theme colours (b) whether users get lost (c) how users feel after (d) how many taps it takes
6. 6.🧩 Scores, notes and settings that an app keeps are called ___. (a) buttons (b) data (c) tabs (d) screens
7. 7.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
   [ filter buttons ]
   [ tab bar ]
   [ search box ]
   [ Save button ] (a) tab bar (b) search box (c) Save button (d) filter buttons
8. 8.🔢 In a food-order flow, what comes right after “pay for the order”? (a) track the order (b) check the cart (c) open the menu (d) add it to the cart
9. 9.🧩 In an app, what is today’s step count? (a) an input (b) a button (c) data (d) a screen
10. 10.🔀 When does the else part run? (a) when the test is false (b) when the test is true (c) never (d) always
11. 11.True or false: a wireframe is a quick sketch. (a) True (b) False
12. 12.True or false: how users feel after is about UX (the experience). (a) False (b) True
13. 13.🔁 What is the LAST line this code shows?
    let names = ["Meera", "Zoya", "Riya", "Kabir"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    } (a) Hi, Kabir (b) Hi, Riya (c) Hi, Meera (d) Hi, Zoya
14. 14.🎯 Why learn about users before you build? (a) to make it longer (b) to pick a logo (c) to slow it down (d) to build what they need
15. 15.🔢 In a quiz-app flow, which comes first: “see if it is right” or “read a question”? (a) see if it is right (b) read a question
16. 16.True or false: a water reminder is the best fit for a runner who forgets to sip water. (a) True (b) False
17. 17.🔁 list.length tells you ___. (a) the first item (b) the biggest item (c) how many items it has (d) the last item
18. 18.🔢 In a food-order flow, what comes right after “check the cart”? (a) pay for the order (b) open the menu (c) add it to the cart (d) track the order
19. 19.Which of these fits saving on the phone? (a) a class leaderboard (b) photos on two devices (c) chat messages to friends (d) a draft you are typing
20. 20.True or false: a medicine reminder solves no real problem. (a) False (b) True
21. 21.Which of these is an input? (a) taking a photo (b) adding up a bill (c) checking a password (d) a buzz (vibration)
22. 22.🧪 What is the ACTUAL result of Test 1?
    🎟️ Rule: a ticket costs 50 for children under 10, and 100 for everyone else.
    function price(age) {
      if (age < 10) {
        return 50;
      }
      return 100;
    }
    Test 1: price(15) → expected 100
    Test 2: price(13) → expected 100
    Test 3: price(6) → expected 50
23. 23.🔁 What is the LAST line this code shows?
    let names = ["Riya", "Aman", "Meera", "Arjun"];
    for (let i = 0; i < names.length; i++) {
      show("Hi, " + names[i]);
    } (a) Hi, Riya (b) Hi, Arjun (c) Hi, Meera (d) Hi, Aman
24. 24.🎯 Which app would help this user most: a student who often misses the school bus? (a) a bus tracker (b) a homework planner (c) a big-text reader (d) a water reminder
25. 25.💾 Where should the app save a class leaderboard: on the phone or in the cloud? (a) in the cloud (b) on the phone
26. 26.True or false: “labels on every icon” helps everyone use the app. (a) True (b) False
27. 27.👆 What kind of event is this: the user types a letter? (a) a load event (b) a text event (c) a tap event (d) a timer event
28. 28.True or false: an app updates from the store. (a) False (b) True
29. 29.🧪 What is the ACTUAL result of Test 2?
    🚚 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(300) → expected 40
    Test 2: delivery(700) → expected 0
    Test 3: delivery(400) → expected 0
30. 30.🔍 Which is the odd one out? (a) a times-table quiz (b) a puzzle with levels (c) a cricket run chase (d) a word battle
31. 31.💡 How can you check that people really have the problem? (a) pick a colour (b) just guess (c) ask possible users (d) copy another app
32. 32.🧩 How many buttons does this app screen have?
    [title] Order Snacks
    [text box] Name
    [button] Next
    [text box] Email
33. 33.True or false: “strong colour contrast” makes the app harder to use. (a) True (b) False
34. 34.🔐 Is this permission request fair or too much: map app → location? (a) fair (b) too much
35. 35.🔁 What number does this code show?
    let runs = [45, 13, 78, 60];
    let count = 0;
    for (let i = 0; i < runs.length; i++) {
      if (runs[i] >= 60) {
        count = count + 1;
      }
    }
    show(count);
36. 36.🔀 What does this battery rule show?
    let battery = 12;
    if (battery < 20) {
      show("Low battery");
    } else {
      show("Battery OK");
    } (a) Battery OK (b) Low battery
37. 37.🖼️ How many parts (boxes) does this wireframe have?
    [ Save button ]
    [ menu icon ]
    [ Add button ]
    [ top bar ]
    [ big picture ]
    [ tab bar ]
38. 38.Which of these is true of an app? (a) comes from an app store (b) needs no installing (c) opens from a link (d) opens in a web browser
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 18 px
    Body text: 25 px
    Label: 13 px
    Footer: 28 px
    Menu: 25 px (a) Footer (b) Label (c) Title (d) Body text
40. 40.🗒️ What is a must-have feature? (a) a sound effect (b) a nice extra (c) one the app cannot skip (d) a colour theme

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