Grade 11 Computer Science Exam

1. 1Which of the following values would be best represented with a constant?

   1. APlayer name
   2. BPlayer level
   3. CPlayer score
   4. DPlayer location
2. 2Which of the following would be best represented with a variable?

   1. AName
   2. BBirthday
   3. CAge
   4. DHome address
3. 3Which keywords is used to declare a constant

   1. Aconst
   2. Bvar
   3. Clet
4. 4Which keyword is used to declare a variable?

   1. Aconst
   2. Bvar
   3. Clet
5. 5Which of the following is not a reason for declaring most values as constants?

   1. AIt is a best practice
   2. BThe compiler can make special optimizations for immutable values
   3. CIt is safer; developers can rely on consistent value
   4. DMost values never change
6. 6Using type interference, which of the following variables would be assigned a Double type?

   1. Avar state = "Rhode Island"
   2. Blet country = "Belgium"
   3. Clet population = 142000
   4. Dlet speedLimit = 75.0
7. 7Will the following code snippet compile? Why?
   let number: Double = 3
   

   1. AYes, because the compiler will assign the value 3.0 to number
   2. BYes, because 3 is a Double
   3. CNo, because 3 is not a Double
8. 8What is the value of myNumber at the end of the following code?
   let x = 2
   let y = 4
   let z = 6
   let myNumber = x + y + z

   1. A4
   2. B6
   3. C10
   4. D12
9. 9What is the value of myNumber at the end of the following code?
   let x = 2
   let y = 4
   let z = 6
   let myNumber = x + y * z

   1. A18
   2. B26
   3. C32
   4. D36
10. 10What is the value of myNumber at the end of the following code?
    let x = 2
    let y = 4
    let z = 6
    let myNumber = x * y - z

    1. A2
    2. B4
    3. C6
    4. D12

11. 11What is the value of myNumber at the end of the following code?
    let x = 2
    let y = 4
    let z = 6
    let myNumber = (x + y) * z

    1. A12
    2. B24
    3. C36
    4. D42
12. 12let x = 14
    let y = 2.5
    
    let result = x * y

    1. AThe code will not compile. x is a Double and y is an Int
    2. BThe code will not compile. x is an Int and y is a Double
    3. CThere is no issue. result will equal the product of x and y
13. 13What is the operator called when it has an arithmetic symbol in front of the equal? =?
    myScore += 100

    1. AAssignment operator
    2. BCompound assignment operator
    3. CPlus equals operator
    4. DReset operator
14. 14Which of the following logical operators means "equals"?

    1. A=
    2. B==
    3. C!=
    4. D>=
15. 15Which of the following logic operators means "NOT"?

    1. A!=
    2. B!
    3. C||
    4. D<
16. 16Which of the following logical operators means "greater than"?

    1. A<
    2. B>
    3. C<=
    4. D>=
17. 17Which of the following logical operators means "less than or equal to"?

    1. A<
    2. B>
    3. C<=
    4. D>=
18. 18Which of the following logic operators means "AND"?

    1. A!
    2. B||
    3. C&&
    4. D!=
19. 19Which of the following logic operators means OR?

    1. A!
    2. B||
    3. C&&
    4. D!=
20. 20What will print to the console when executing the following code?
    var time = 6
    
    if time < 12 {
    print("Good morning")
    } else if time < 20 {
    print("Good afternoon")
    } else {
    print("Good evening")
    }

    1. A"Good morning"
    2. B"Good afternoon"
    3. C"Good evening"
    4. DNothing will print to the console
21. 21var weight = 52
    
    if weight <= 50{
    print("Having a great flight")
    } else {
    print("There is a $25 fee for your luggage")
    }

    1. A"Have a great flight"
    2. B"There is a $25 fee for your luggage"
    3. CNothing will print to the console
22. 22var grade: Character
    let score = 78
    
    switch score {
    case 90...100:
    grade = "A"
    case 80...89:
    grade = "B"
    case 70...79:
    grade = "C"
    case 61...69:
    grade = "D"
    default:
    grade = "F"
    }

    1. AA
    2. BB
    3. CC
    4. DD
    5. EF
23. 23 What is the value of mood after executing the following code?
    
    let cookies = [Cookie(.chocolate), Cookie(.peanutButter), Cookie(.blackAndWhite)]
    let mood = cookies.count() > 2 ? ;) : ;(

    1. Acookies.count()
    2. B;(
    3. C;)
24. 24What do you use to switch to running code on a physical device instead of using a Simulator?

    1. ARun button
    2. BScheme menu
    3. CDebug Area
25. 25After code execution has paused at a breakpoint, which button will resume execution?

    1. AContinue
    2. BStep over
    3. CStep into
    4. DStep out
26. 26How is an XIB different from a storyboard?

    1. AAn XID represents a single view object, while a storyboard represents multiple views, scenes, and how to navigate between them
    2. BA XID represents multiple views, scenes, and how to navigate between them, while a storyboard represents a single view object
27. 27What does the gray arrow next to a storyboard scene indicate?

    1. AThat the scene is the one you are currently editing
    2. BThat the scene is the initial view controller
    3. CThat the scene has an error and you are unable to build
    4. DThat the scene is finished
28. 28What is an IBOutlet?

    1. AA reference to a piece of code that will execute when the user interacts with a control
    2. BA reference to a visual element in code so it can be adjusted at runtime
29. 29What is an IBAction?

    1. AA reference to a piece of code that will execute when the user interacts with a control
    2. BA reference to a visual element in code so it can be adjusted at runtime
30. 30What is the Document Outline used for?

    1. ADisplays a list of each view controller in the scene, along with a hierarchical list of the elements within each view controller
    2. BAllows you to edit the properties related to an object's identity, such as what class it belongs to
    3. CProvides a list of adjustable visual properties for the selected item
    4. DAllows you to adjust the size and position of the selected element within the scene
    5. ELists all the functions and variable names related to an object
31. 31What is the Identity inspector used for?

    1. ADisplays a list of each view controller in the scene, along with a hierarchical list of the elements within the view controller
    2. BAllows you to edit the properties related to an object's identity, such as what class it belongs to
    3. CProvides a list of adjustable visual properties for the selected item
    4. DAllows you to adjust the size and position of the selected item within the scene
    5. ELIsts all the functions and variable names related to the object
32. 32What is the Attributes inspector used for?

    1. ADisplays a list of each view controller in the scene, along with a hierarchical list of all the elements within each view controller
    2. BAllows you to edit the properties related to an object's identity, such as what class it belongs to
    3. CProvides a list of adjustable visual properties for the selected item
    4. DAllows you to adjust the size and position of the selected element within the scene
    5. EList all the functions and variable names related to the object
33. 33What is the Size inspector used for?

    1. ADisplays a list of each view controller in the scene, along with a hierarchical list of elements within each view controller
    2. BAllows you to edit the properties related to an object's identity, such as what class it belongs to
    3. CProvides a list of adjustable visual properties for the selected item
    4. DAllows you to adjust the size and position of the selected element within the scene
    5. ELists all the functions and variable names related to the object
34. 34What is the Connections inspector used for?

    1. ADisplays a list of each view controller in the scene, along with a hierarchical list of the elements within each view controller
    2. BAllows you to edit the properties related to an object's identity, such as what class it belongs to
    3. CProvides a list of adjustable visual properties for the selected item
    4. DAllows you to adjust the size and position of the selected element within the scene
    5. ELists all the functions and variables names related to the object
35. 35When you declare a String, how do you set the initial value?

    1. AWith Unicode
    2. BWith a string literal
    3. CWith the operator +=
    4. DWith an index
36. 36To compare two strings, how would you check for equality?

    1. AWith the operator ==
    2. BWith a string literal
    3. CWith an index
    4. DWith the lowercased() method
37. 37Given the following code, what is the resulting type of ox
    let o: Character = "O"
    let x: Character = "x"
    let ox = String(o) + String (x)

    1. A[Character]
    2. BCharacter
    3. CString
    4. D"Ox"
38. 38Given the following code what is the resulting value of mathExpression?
    let b = 5
    let m = "3"
    let x = 5
    let mathExpression = "Solve for x. 20 = \(m) + \(b)"

    1. A"Solve for x. 20 = 3x + 5"
    2. B"Solve for x. 20 = 5x + 3"
    3. C"Solve for 5. 20 = 55 + 5
    4. D5
39. 39Why does the following expression return false?
    "Jonathan" == "jonathan"

    1. AIt doesn't. The expression returns true
    2. BAn uppercase character and a lowercase character aren't the same thing
    3. CBecause == is the wrong operator for string equality
40. 40Why does the following function not compile?
    func increment(_ value: Int by amount: Int) -> Int {
    return value + amount
    }

    1. AThe function doesn't have a print function
    2. BThe first parameter must have an argument label
    3. Cincrement(_: by :_) is already a function in swift
    4. DThe function parameters aren't separated by commas
41. 41A function can be called using the code below. How was the function declared?
    let value = multiply(5, by: 4)

    1. Afunc multiply (_ first: Int, by: Int)
    2. Bfunc multiply (first: Int, by: Int) -> Int
    3. Cfunc multiply (_ first: Int, by: Int) -> Int
    4. Dfunc multiply (first: Int, by: Double) -> Int
42. 42Which function returns two integers?

    1. Afunc getRequestedError() -> (String,Int)
    2. Bfunc getRequestedError() -> (Int,Int)
    3. Cfunc getRequestedError() -> (Int,Int,Int)
    4. Dfunc getRequestedError()
43. 43Given the following dictionary, what is the result of executing
    numberOfLegs["snake"] = 0?
    var numberOfLegs = ["spider": 8, "human": 2, "dog": 4, "cat": 4]

    1. ANothing, numberOfLegs cannot be modified
    2. B"snake " is added as a key, with value of 0
    3. C"snake" is updated to have a value of 0 instead of 4
    4. DAn error is thrown because two keys in the dictionary have the same value
44. 44Which piece of code will insert an item into the set of integers, bankAccounts?

    1. AbankAccounts.insert(12345, at: 0)
    2. BbankAccounts.insert(12345)
    3. CbankAccounts.append(12345)
    4. DbankAccounts[0] = 12345
45. 45Which of the following are used to loop over a section of code?

    1. Afor, if, while
    2. Bwhile, Range, if
    3. Cfor, while, do
    4. Dfor, while
46. 46Which of the following loops through the range 0-9 and ignores the range value?

    1. Afor value in 0...10
    2. Bfor value in 0..<10
    3. Cfor _ in 0...10
    4. Dfor _ in 0..<10
47. 47Which segue adapts its presentation style from modal to push if a navigation controller is present?

    1. AUnwind
    2. BShow
    3. CPopover
    4. DReplace
48. 48A navigation bar includes a _________ property that contains a title and a set of buttons

    1. ASegue
    2. BBar Button Item
    3. CNavigation Item
    4. DController
49. 49You can perform a segue programmatically as long as the segue has been given a/an:

    1. AOutlet
    2. BSource
    3. CDestination
    4. DIdentifier
50. 50What property would you modify if you wanted to add a badge to a tab?

    1. AbadgeIcon
    2. BbadgeString
    3. Cbadge
    4. DbadgeValue
51. 51What value would you assign to a badge to hide it

    1. Anil
    2. B0
    3. C" "
    4. D""
52. 52When should you use a tab bar controller?

    1. AWhen your app has distinct modes
    2. BWhen you want to present many different tools to the user
    3. CWhen you want to navigate from one view controller to another, within the same context
53. 53Why might you need to perform a segue programmatically?

    1. AWhen you are unsure if you should present the destination view controller modally or with a push
    2. BWhen you need logic that determines the segue
    3. CWhen you are unsure which data to pass to the destination view controller

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Test sobre Grade 11 Computer Science Exam, creado por Cameron Dunn el 17/06/2019.

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Cameron Dunn

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