How many access levels does Swift provide?

What is the data type that is used to represent buttons in iOS?

What is the implicit property that every instance has with itself?

Which of the following is a valid delegation in Swift?

What kind of initializers often fail in instantiating an object in Swift?

For how many maximum number of elements in a tuple does the Swift standard library provide the implementation of comparison operators?

What will be the output of the following lines of code?

enum Test: Int {

case a = 1, b = 2

}

var test = Test(rawValue: 2)

print(test!)

Will the following lines of code cause an error ?

func test(label: String){

  label="String"

}

test(label: “String")

Options are :

1: For No 0: For yes

Which is the correct way to force unwrap optionals in Swift?

Consider the optional variable:

var test: Int? = 5