Scala Skill Assessment Answers 2021 | LinkedIn Assessment Answers 2021

Hello Learners, Today we are going to share LinkedIn Scala Skill Assessment Answers. So, if you are a LinkedIn user, then you must give Skill Assessment Test. This Assessment Skill Test in LinkedIn is totally free and after completion of Assessment, you’ll earn a verified LinkedIn Skill Badge🥇 that will display on your profile and will help you in getting hired by recruiters.

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• Wants to increase chances for getting hire,
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• Anyone interested in improving their whiteboard coding skill,
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• Any students who want to start a career in Data Science,
• Students who have at least high school knowledge in math and who want to start learning data structures,
• Any self-taught programmer who missed out on a computer science degree.

Here, you will find Scala Quiz Answers in Bold Color which are given below. These answers are updated recently and are 100% correct✅ answers of LinkedIn Scala Skill Assessment.

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LinkedIn Scala Skill Assessment Answers

Q1. Scala bytecode can run on top of Java VM. What is the fundamental difference between Java object.clone() and Scala object.copy()?

•  One is a Java object, the other is a Scala object.
•  clone() will copy class structures but not the data, while copy() will also copy data into new objects.
•  There is no difference.
•  copy() allows you to change values during the copying process; clone() does not.

Q2. What value does this code return?
val m1 = Map(“a”->1,”b”->2,”c”->3)m1(“a”)

•  a
•  2
•  b
•  1

Q3. What is one way to avoid low-level parallelization details?

•  monads
•  literal functions
•  partially applied functions
•  parallel collections

Q4. What do you use in ScalaTest to see a detailed diagram of error messages when a test fails?

•  ArgumentExceptions
•  AssertionException
•  DiagrammedAssertions
•  JUnit

Q5. What data type would you use to store an immutable collection of objects that contain a fixed number of varying types?

•  Array
•  ImmutableCollection
•  List
•  Tuple

Q6. After defining a function in the interpreter, Scala returns the following. What does the
myfnc: ()Unit

•  The function has no side effects.
•  The function takes no parameters.
•  The function returns no value.
•  Returning unit types to the function is a closure.

Q7. What type of number is 1234.e5?

•  hexadecimal
•  short
•  floating point
•  long

Q8. When you convert a map to a list using the toList method of the map, the result will be of which type?

•  List[(String, String)]
•  List[(Array, Array)]
•  List[(Array, Array)]
•  List

Q9. What type of object does this code create?
val x = (1234, “Active”)

•  List
•  Map
•  Tuple
•  Array

Q10. Which is a subclass of all classes?

•  AnyVal
•  AnyRef
•  Method
•  Null NOT SURE

Q11. For the for-yield construct, is the scope separate between for-body and yield-body?

•  Yes and no. It is different depending on the for construct and what it does. NOT SURE
•  Yes, because the for section does not expose its scope.
•  No, because for-yield shares the same scope, even though they are within separate curly braces.
•  Yes, because they are within different curly braces.

Q12. What is one way to implement pattern matching on methods?

•  using regex
•  using monads
•  using string matching
•  using case classes

Q13. What is the value of z after executing this code?
val y = List(‘a’,’b’)val z = y::List(‘c’)

•  List(a,b,c)
•  List(List(a, b), c)
•  List(c,a,b)
•  List(c,List(a,b))

Q14. What term is used to specify a precondition?

•  assert
•  require
•  precondition
•  mustHave

Q15. Which Scala type may throw an exception or a successfully computed value, and is commonly used to trap and propagate errors?
answers missing
The answer should be Option: Some or None

Q16. What is the data type of y after this code is executed?
val y = (math floor 3.1415 * 2)

•  short
•  double
•  int
•  bigInt

Q17. When using pattern matching, which character matches on any object?

•  %
•  \_
•  ^
•  –

Q18. You have created an array using val. Can you change the value of any element of the array—and why or why not?

•  Yes, the reference to the array is immutable, so the location that the array points to is immutable. The values in the array are mutable.
•  The 0th element is immutable and cannot be modified. All other elements can be modified.
•  Yes, val does not make arrays immutable.
•  No, val makes the array and values of the array immutable.

Q19. What is the output of this function?
def main () {     var a = 0     for (a<-1 until 5){println(a)}

•  1,2,3,4,5
•  0,1,2,3,4
•  1,2,3,4
•  2,3,4,5

Q20. What do you call objects with immutable state?

•  singletons
•  stationary objects
•  functional objects
•  fixed objects

Q21. You have written a Scala script. How would you access command-line arguments in the script?

•  use array named args
•  use tuple named args
•  use numbered variables with a _ prefix for example _ 1, _ 2, _ 3
•  use numbered variables with a $ prefix – for example $1, $2, $3

Q22. What does this code return? val x = 3; if (x >2) x = 4 else x = x*2

•  4
•  an error
•  6
•  3

Q23. Which statement returns a success or a failure indicator when you execute this code?
val MyFuture = Future {runBackgroundFunction() }

•  myFuture.onComplete
•  myFuture(status)
•  myFuture.Finished
•  complete(myFuture)

Q24. To denote a parameter that may be repeated, what should you place after type?

•  %
•  &
•  \_
•  –

Q25. What is called when a superclass has more than one subclass in Scala?

•  polyinheritance
•  multilevel inheritance
•  multimode inheritance
•  hierarchical inheritance

Conclusion

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