Mobile Development and JavaScript | Module 2

Course Name: Mobile Development and JavaScript

Course Link: Mobile Development and JavaScript

These are Mobile Development and JavaScript Week 2 Coursera Answers

Module 2 Quiz: The Building Blocks of a Program

Q1. Which part of the below statement is an object?
const car = {type:”Ford”, model:”Model T”, color:”white”}; 

  • type
  • color
  • car
  • model

Answer: car

Q2. True or False: SyntaxError in JavaScript cannot be caught using the try-catch block.

  • True
  • False

Answer: False

Q3. What value is printed when the following code runs?
var burger = [“bun”, “beef”, “lettuce”, “tomato sauce”, “onion”, “bun”]; console.log(burger[2]);

  • bun
  • beef
  • tomato sauce
  • lettuce
Answer: lettuce

These are Mobile Development and JavaScript Week 2 Coursera Answers

Q4. In the following code, what data type does start: function() {} represent?
var bicycle = { wheels: 2, start: function() { }, stop: function() { } };

  • Array
  • Method
  • Property
  • Object
Answer: Method

Q5. When the error is thrown, the code will do what?
try { throw new Error(); console.log(‘Hello’); } catch(err) { console.log(‘Goodbye’); }

  • Execute the code inside the throw statement.
  • Execute the code inside the catch statement.
  • Print the type of error to the console.
  • Print new Error to the console.
Answer: Execute the code inside the catch statement.

Q6. Which of the following is used to run a block of code that may output an error without stopping the program?

  • throw
  • catch
  • ErrorHandling
  • try
Answer: try

These are Mobile Development and JavaScript Week 2 Coursera Answers

Q7. When the following code runs, what will print out?
try { throw new Error(); console.log(‘Hello’); } catch(err) { console.log(‘Goodbye’); } 

  • Hello
  • Goodbye
  • err
  • catch failed
Answer: Goodbye

Q8. What error gets thrown when, for example, one tries to use variables that haven’t been declared anywhere?

  • TypeError
  • ReferenceError
  • RangeError
  • SyntaxError
Answer: ReferenceError

Q9. Which of the below will be the output of the following code?
(10).toString(100);

  • .1
  • SyntaxError
  • RangeError
  • undefined
Answer: SyntaxError

These are Mobile Development and JavaScript Week 2 Coursera Answers

See also  Mobile Development and JavaScript | Module 3

Q10. The statement below evaluates to which of the following?
const value = null;
console.log(value);

  • value
  • null
  • undefined
  • error
Answer: null

Q10. What will be printed when the following code runs?
var result; console.log(result);

  • result
  • null
  • undefined
  • 0
Answer: undefined

Q12. Which of the following statements will evaluate to false?

  • null == undefined;
  • !null;
  • null === undefined;
  • null === null;
Answer: null == undefined;, null === undefined;

These are Mobile Development and JavaScript Week 2 Coursera Answers

Q13. A method returns undefined if the variable that is being evaluated does not have which of the following?

  • A null value
  • Correct syntax
  • A defined value
  • A method cannot return undefined.
Answer: A defined value

Q14. What represents the intentional absence of any object value?

  • undefined
  • noValue
  • null
  • “”
Answer: null

Q15. Which of the following is used to output an error and pass control to the first catch block?

  • ErrorHandling
  • try
  • err
  • throw
Answer: throw

These are Mobile Development and JavaScript Week 2 Coursera Answers

More Weeks of this course: Click Here

More Coursera Courses: http://progiez.com/coursera

Mobile Development and JavaScript Week 2 Coursera

Similar: