App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 816 · 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 is the odd one out? (a) a result on screen (b) tapping a button (c) a pop-up message (d) a buzz (vibration)
2. 2.💾 What number does this code show?
   let songs = ["Kites", "Rain", "Monsoon"];
   songs.push("Sunrise");
   songs.push("Ocean");
   show(songs.length);
3. 3.🌐 Which program do you need to open a website? (a) a camera app (b) a calculator (c) a web browser (d) an app store
4. 4.🧰 A museum app works out the entry fee. What number does this code show?
   function fee(age) {
     if (age < 5) {
       return 0;
     }
     return 50;
   }
   show(fee(3) + fee(10));
5. 5.🔁 What number does this code show?
   let runs = [16, 12, 16, 13, 5];
   let total = 0;
   for (let i = 0; i < runs.length; i++) {
     total = total + runs[i];
   }
   show(total);
6. 6.🐞 Each comment says what its line SHOULD do. Which line has the bug?
   line 1: let score = 34; // start at 33
   line 2: score = score - 1; // take away 1
   line 3: score = score + 5; // add 5
   line 4: show(score); // show it (a) line 1 (b) line 3 (c) line 2
7. 7.True or false: a big, easy tap area is good button design. (a) True (b) False
8. 8.🔀 What number does this shop app show?
   let total = 900;
   if (total > 500) {
     total = total - 50;
   }
   show(total);
9. 9.🧪 A test case is an input together with its ___. (a) expected result (b) font size (c) screen colour (d) app icon
10. 10.🧰 What number does this code show?
    function triple(n) {
      return n * 3;
    }
    show(triple(4));
11. 11.True or false: you let friends try it at the release stage. (a) True (b) False
12. 12.Which of these is true of the back button? (a) shows 3 to 5 icons (b) goes to the last screen (c) sits at the bottom (d) switches main sections
13. 13.🔍 Which is the odd one out? (a) a unit converter (b) a flashcard trainer (c) an alarm clock (d) a calculator
14. 14.🧩 In an app, what is the home page of an app? (a) a screen (b) a button (c) data (d) an input
15. 15.True or false: “text that can grow” helps everyone use the app. (a) True (b) False
16. 16.⚙️ Which line does the processing (works out the answer)?
    line 1: let bill = 93; // typed by the user
    line 2: let friends = 3; // typed by the user
    line 3: let share = bill / friends;
    line 4: show(share); (a) line 3 (b) line 1 (c) line 2 (d) line 4
17. 17.🗒️ You are planning version 1 of a water reminder. Which feature is a MUST-HAVE? (a) see today’s total (b) water animations (c) custom alert sounds (d) share your streak
18. 18.True or false: a calculator is a tool app. (a) False (b) True
19. 19.🛠️ At which stage do you sketch the screens? (a) the plan stage (b) the build stage (c) the release stage (d) the test stage
20. 20.🔀 What number does this shop app show?
    let total = 740;
    if (total > 500) {
      total = total - 50;
    }
    show(total);
21. 21.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
22. 22.🎯 Which app would help this user most: a reader who finds small print hard? (a) a homework planner (b) a water reminder (c) a big-text reader (d) a pocket-money tracker
23. 23.🖼️ In this wireframe (top to bottom), what is right above the menu icon?
    [ big picture ]
    [ list of items ]
    [ Save button ]
    [ menu icon ] (a) big picture (b) Save button (c) list of items
24. 24.Which of these is an output? (a) taking a photo (b) working out a tip (c) a result on screen (d) typing your age
25. 25.🔍 Which is the odd one out? (a) try every button (b) let friends try it (c) spot a problem to solve (d) write down the bugs
26. 26.🧰 What number does this code show?
    function total(price, qty) {
      return price * qty;
    }
    show(total(15, 2));
27. 27.💡 Does an app idea like a lost-and-found board solve a real problem? (a) No (b) Yes
28. 28.💾 Where should the app save your last game level: on the phone or in the cloud? (a) on the phone (b) in the cloud
29. 29.True or false: a party-invite app for friends needs your contacts. (a) True (b) False
30. 30.🧭 The app has tabs Home, Search, Profile. You start on Home, then:
    1. tap the Home tab
    2. open “Badges”
    3. tap the Home tab
    Which screen are you on now? (a) Profile (b) Home (c) Search (d) Badges
31. 31.🔢 After an app is released, what comes right after “list what to fix”? (a) test it again (b) read user reviews (c) fix and improve (d) release an update
32. 32.True or false: a blank grey screen solves a real problem. (a) True (b) False
33. 33.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
    1. open “Help page”
    2. open “Match report”
    3. open “Map”
    How many times must you tap Back to reach the main screen of this tab?
34. 34.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
35. 35.👥 A cricket club app has 135 players, 30 coaches and 275 fans as users. Which user group is the biggest? (a) players (b) coaches (c) fans
36. 36.Which of these is true of an app? (a) needs no installing (b) comes from an app store (c) opens in a web browser (d) opens from a link
37. 37.✏️ Is this true of a wireframe or of a final design: has the real colours? (a) a wireframe (b) a final design
38. 38.Which of these is data? (a) a box to type a name (b) tap to Save (c) tap to Start (d) your friends list
39. 39.🔍 Which is the odd one out? (a) a buzz (vibration) (b) a beep sound (c) checking a password (d) a pop-up message
40. 40.🔀 What does this sign-up rule show?
    let age = 12;
    if (age >= 13) {
      show("Welcome!");
    } else {
      show("Ask a parent");
    } (a) Welcome! (b) Ask a parent

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