App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 801 · 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.Which of these is processing? (a) a pop-up message (b) typing your age (c) a buzz (vibration) (d) working out a tip
2. 2.Which of these happens at the plan stage? (a) list what users need (b) talk to possible users (c) pick the features (d) spot a problem to solve
3. 3.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
   1. tap the Search tab
   2. open “Badges”
   3. open “Help page”
   4. tap the Home tab
   How many times must you tap Back to reach the main screen of this tab?
4. 4.💡 Which app idea solves this problem: projects pile up at once? (a) a homework planner (b) a study-room finder (c) a bill splitter (d) a lost-and-found board
5. 5.🔀 What number does this shop app show?
   let total = 620;
   if (total > 500) {
     total = total - 50;
   }
   show(total);
6. 6.🐞 After fixing a bug you should ___. (a) delete the test (b) never test (c) test it again (d) release at once
7. 7.🔢 In a quiz-app flow, which comes first: “tap “Start quiz”” or “read a question”? (a) tap “Start quiz” (b) read a question
8. 8.🔀 Why plan the user flow before building? (a) to skip testing (b) so each step is clear (c) to hide the buttons (d) to add more taps
9. 9.🔢 In a quiz-app flow, which comes FIRST? (a) see the final score (b) see if it is right (c) read a question (d) tap “Start quiz”
10. 10.🧰 What number does this code show?
    function total(price, qty) {
      return price * qty;
    }
    show(total(80, 3));
11. 11.Which of these happens at the build stage? (a) list what users need (b) pick the features (c) write the store text (d) add the buttons
12. 12.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 22 px
    Body text: 16 px
    Title: 14 px (a) Title (b) Menu (c) Body text
13. 13.📲 What happens when you tap an app’s icon? (a) the app opens (b) the phone charges (c) the app is deleted (d) the sound turns off
14. 14.Which of these is an output? (a) checking a password (b) taking a photo (c) a result on screen (d) adding up a bill
15. 15.🧭 The app has tabs Feed, Chat, Settings. You start on Feed, then:
    1. tap the Settings tab
    2. open “Map”
    3. tap the Chat tab
    4. open “Edit photo”
    Which screen are you on now? (a) Feed (b) Map (c) Chat (d) Edit photo
16. 16.🔁 What number does this code show?
    let scores = [3, 6, 15, 7];
    let total = 0;
    for (let i = 0; i < scores.length; i++) {
      total = total + scores[i];
    }
    show(total);
17. 17.⚙️ In an app, is sorting the scores an input, processing or an output? (a) processing (b) input (c) output
18. 18.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
19. 19.📊 Survey: which problem bugs you most? How many students voted in all?
    missing the bus: 7 votes
    forgetting birthdays: 25 votes
    no quiet study place: 17 votes
20. 20.📊 Survey: which problem bugs you most? How many students voted in all?
    forgetting birthdays: 7 votes
    forgetting homework: 18 votes
    wasting pocket money: 6 votes
21. 21.🔢 In a food-order flow, which comes FIRST? (a) check the cart (b) open the menu (c) add it to the cart (d) pick a dish
22. 22.🎨 A beautiful app that confuses everyone has ___. (a) perfect UX (b) good UI but poor UX (c) no UI at all (d) good UX but poor UI
23. 23.🔍 Which is the odd one out? (a) talk to possible users (b) write the code (c) add the buttons (d) connect the data
24. 24.True or false: a tiny 20 px button is poor button design. (a) False (b) True
25. 25.🧰 What does this code show?
    function greet(name) {
      return "Welcome, " + name + "!";
    }
    show(greet("Riya")); (a) Welcome, name! (b) Welcome, Riya! (c) greet (d) Riya
26. 26.🔀 What does this sign-up rule show?
    let age = 12;
    if (age >= 13) {
      show("Welcome!");
    } else {
      show("Ask a parent");
    } (a) Ask a parent (b) Welcome!
27. 27.🔀 Which badge does this quiz app show?
    let marks = 83;
    if (marks >= 80) {
      show("Gold");
    } else if (marks >= 50) {
      show("Silver");
    } else {
      show("Bronze");
    } (a) Silver (b) Bronze (c) Gold
28. 28.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Profile tab
    2. open “Badges”
    3. open “Badges”
    4. tap the Search tab
    5. tap the Search tab
    Which screen are you on now? (a) Search (b) Badges (c) Home (d) Profile
29. 29.📱 Which one has a home-screen icon: an app or a website? (a) an app (b) a website
30. 30.👆 What kind of event is this: a finger hits Like? (a) a load event (b) a tap event (c) a text event (d) a timer event
31. 31.True or false: an app opens from a link. (a) False (b) True
32. 32.🎯 Is this a user need or a feature: “I forget my homework”? (a) a feature (b) a user need
33. 33.True or false: a date picker is a screen. (a) True (b) False
34. 34.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Search → Shop → Results → Size → Cart → Address
    Design B: Home → Pay → Offers → Size → Confirm (a) Design B (b) Design A
35. 35.🔐 Is this permission request fair or too much: calling app → contacts? (a) fair (b) too much
36. 36.💾 Where should the app save your last game level: on the phone or in the cloud? (a) on the phone (b) in the cloud
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 25 px
    Title: 26 px
    Body text: 18 px
    Label: 10 px (a) Caption (b) Body text (c) Label (d) Title
38. 38.🐞 Each comment says what its line SHOULD do. Which line has the bug?
    line 1: let coins = 34; // start at 34
    line 2: coins = coins - 3; // take away 3
    line 3: coins = coins - 2; // add 2
    line 4: coins = coins - 1; // take away 1
    line 5: show(coins); // show it (a) line 4 (b) line 2 (c) line 3 (d) line 1
39. 39.True or false: a final design uses the final pictures. (a) False (b) True
40. 40.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
    Design A: Home → Confirm → Offers
    Design B: Home → Confirm → Pens → Pay → Item → Offers (a) Design A (b) Design B

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