App Dev Worksheet: Part 2 Test
Developer's tip (Think like the user): First decide which topic the question is about. Use that lesson’s rule: 48 px buttons, 16 px text, the screen stack, the flow order. For code, count positions from 0.
NameDateTime takenScore ___ / 40
- 1.True or false: photos on two devices fits saving on the phone. (a) True (b) False
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2.💾 What number does this code show?
let friends = ["Riya", "Arjun", "Zoya"];
friends.push("Aman");
friends.push("Meera");
show(friends.length); - 3.🔢 In a sign-up flow, what comes right after “open the app”? (a) type name and email (b) make a password (c) tap “Sign up” (d) enter the code sent
- 4.🧭 What does the back button usually do? (a) opens settings (b) closes all apps (c) goes to the last screen (d) deletes the page
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5.💾 What does this code show? (Positions start at 0.)
let friends = ["Riya", "Zoya", "Meera", "Kabir", "Aman"];
show(friends[2]); (a) Kabir (b) Riya (c) Meera (d) Zoya -
6.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
Save button: 32 px tall
Help button: 68 px tall
Next button: 68 px tall (a) Next (b) Save (c) Help - 7.🔢 In a sign-up flow, what comes right after “enter the code sent”? (a) open the app (b) see the home screen (c) tap “Sign up” (d) make a password
- 8.Which of these is about UI (the look)? (a) how easy sign-up is (b) whether users get lost (c) the icon shapes (d) how users feel after
- 9.♿ A screen has 10 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
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10.💾 What number does this code show?
let coins = 5;
coins = coins - 2;
coins = coins + 1;
show(coins); -
11.🖼️ In this wireframe (top to bottom), what is right above the title text?
[ Save button ]
[ list of items ]
[ title text ]
[ Add button ]
[ search box ] (a) Add button (b) search box (c) Save button (d) list of items - 12.🌗 Is red on green easy or hard to read on a button? (a) easy to read (b) hard to read
- 13.True or false: a wireframe looks like the real app. (a) True (b) False
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14.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
Design A: Home → Menu → Cart → Address → Shop → Size → Offers
Design B: Home → Size → Shop → Search → Menu → Pens (a) Design A (b) Design B - 15.✏️ Is this true of a wireframe or of a final design: uses plain grey boxes? (a) a wireframe (b) a final design
- 16.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
- 17.🎨 Is this about UI or UX: the button colours? (a) UX (b) UI
- 18.True or false: a final design looks like the real app. (a) True (b) False
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19.🖼️ How many parts (boxes) does this wireframe have?
[ list of items ]
[ big picture ]
[ Add button ]
[ filter buttons ]
[ tab bar ]
[ search box ] - 20.🔢 In a photo-post flow, which comes FIRST? (a) add a filter (b) take the photo (c) post the photo (d) open the camera screen
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21.🖼️ How many parts (boxes) does this wireframe have?
[ big picture ]
[ Save button ]
[ search box ]
[ filter buttons ]
[ top bar ]
[ Add button ] -
22.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
Start button: 56 px tall
Done button: 32 px tall
Back button: 36 px tall - 23.🎨 Is this about UI or UX: how many taps it takes? (a) UI (b) UX
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24.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
Title: 14 px
Menu: 16 px
Body text: 23 px (a) Menu (b) Title (c) Body text - 25.🔢 In a food-order flow, which comes LAST? (a) add it to the cart (b) track the order (c) pay for the order (d) pick a dish
- 26.💾 What is a variable? (a) a picture (b) a phone setting (c) a named box for a value (d) a type of screen
- 27.Which colour pair is hard to read? (a) white on black (b) dark blue on white (c) black on yellow (d) pale pink on white
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28.🖼️ In this wireframe (top to bottom), what is right below the search box?
[ list of items ]
[ search box ]
[ title text ]
[ big picture ]
[ Add button ] (a) title text (b) list of items (c) big picture (d) Add button - 29.Which colour pair is easy to read? (a) dark blue on white (b) red on green (c) light grey on white (d) dark blue on black
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30.👆 Two designs for the same task (each arrow is one tap). How many taps does Design A need?
Design A: Home → Cart → Address → Results → Search → Pay → Size
Design B: Home → Offers → Search → Results - 31.🔢 In a sign-up flow, what comes right after “tap “Sign up””? (a) see the home screen (b) type name and email (c) make a password (d) open the app
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32.👆 Two designs for the same task (each arrow is one tap). Which needs FEWER taps?
Design A: Home → Address → Confirm → Item → Results
Design B: Home → Search → Menu → Offers (a) Design A (b) Design B - 33.🔍 Which is the odd one out? (a) the icon shapes (b) how users feel after (c) the font size (d) the button colours
- 34.🔀 What is a user flow? (a) the path through screens (b) a colour theme (c) a charging cable (d) a type of font
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35.🖼️ In this wireframe (top to bottom), which part is at the very bottom?
[ Save button ]
[ top bar ]
[ big picture ]
[ search box ] (a) top bar (b) Save button (c) big picture (d) search box - 36.🧭 Which part of navigation shows 3 to 5 icons? (a) the back button (b) a tab bar (c) a menu button
- 37.Which of these is true of the back button? (a) opens a list of pages (b) sits at the bottom (c) switches main sections (d) goes to the last screen
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38.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
Next button: 28 px tall
Start button: 60 px tall
Back button: 56 px tall (a) Back (b) Start (c) Next -
39.🧭 The app has tabs Lessons, Quiz, Me. You start on Lessons, then:
1. tap the Me tab
2. open “Match report”
3. tap Back
4. tap the Me tab
5. open “Friend list”
Which screen are you on now? (a) Quiz (b) Match report (c) Lessons (d) Friend list -
40.🖼️ In this wireframe (top to bottom), what is right above the list of items?
[ Save button ]
[ menu icon ]
[ search box ]
[ list of items ] (a) menu icon (b) Save button (c) search box
Answer key
- False
- 5
- tap “Sign up”
- goes to the last screen
- Meera
- Save
- see the home screen
- the icon shapes
- 8
- 4
- list of items
- hard to read
- False
- Design B
- a wireframe
- helps everyone
- UI
- True
- 6
- open the camera screen
- 6
- 1
- UX
- Title
- track the order
- a named box for a value
- pale pink on white
- title text
- dark blue on white
- 6
- type name and email
- Design B
- how users feel after
- the path through screens
- search box
- a tab bar
- goes to the last screen
- Next
- Friend list
- search box
Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students