Salesforce CRT-600 Certification Preparation for Salesforce JavaScript Developer I Exam Exam Practice Test Questions

• Question 1

  A test has a dependency on database.query. During the test the dependency is replacedwith an object called database with the method, query, that returns an array. Thedeveloper needs to verify how many times the method was called and the argumentsused each time.Which two test approaches describe the requirement?Choose 2 answers

  • Integration
  • Black box
  • White box
  • Mocking

  Show Answer Answer: C, D Next

• Question 2

  Refer to the code below:Const resolveAfterMilliseconds = (ms) => Promise.resolve (setTimeout (( => console.log(ms), ms ));Const aPromise = await resolveAfterMilliseconds(500);Const bPromise = await resolveAfterMilliseconds(500);Await aPromise, wait bPromise;What is the result of running line 05?

  • APromise and bPromise run sequentially.
  • Neither aPromise or bPromise runs.
  • APromise and bPromise run in parallel.
  • Only aPromise runs.

  Show Answer Answer: B Next

• Question 3

  Which two console logs outputs NaN ?Choose 2 answers

  • Console.log(10/ Number('5'));
  • Console.log(parseInt('two'));
  • Console.log(10/ ''five);
  • Console.log(10/0);

  Show Answer Answer: B, C Next

• Question 4

  Refer to the code below:const addBy = ?const addByEight =addBy(8);const sum = addBYEight(50);Which two functions can replace line 01 and return 58 to sum?Choose 2 answers

  • Const addBy = function(num1){ return function(num2){ return num1 + num2; }
  • Const addBy = function(num1){ return num1 + num2; }
  • Const addBy = (num1) => num1 + num2 ;
  • Const addBY = (num1) => (num2) => num1 + num2;

  Show Answer Answer: A, D Next

• Question 5

  Given the code below:Which three code segments result in a correct conversion from number to string? Choose 3 answers

  • Let strValue = numValue. toString();
  • Let strValue = * * 4 numValue;
  • Let strValue = numValue.toText ();
  • Let scrValue = String(numValue);
  • Let strValue = (String)numValue;

  Show Answer Answer: A, B, D Next