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Free CRT-600 Exam Braindumps (page: 15)

Page 14 of 57
PDF with 224 Questions

Refer to the following code:
01 function Tiger(){
02 this.Type = `Cat';
03 this.size = `large';
04 }
06 let tony = new Tiger();
07 tony.roar = () =>{
08 console.log(`They\'re great1');
09 };
11 function Lion(){
12 this.type = `Cat';
13 this.size = `large';
14 }
16 let leo = new Lion();
17 //Insert code here
18 leo.roar();
Which two statements could be inserted at line 17 to enable the function call on line 18? Choose 2 answers.

  1. Leo.roar = () => { console.log(`They\'re pretty good:'); };
  2. Object.assign(leo,Tiger);
  3. Object.assign(leo,tony);
  4. Leo.prototype.roar = () => { console.log(`They\'re pretty good:'); };

Answer(s): A,C



Which statement accurately describes an aspect of promises?

  1. Arguments for the callback function passed to .then() are optional.
  2. In a.then() function, returning results is not necessary since callbacks will catch the result of a previous promise.
  3. .then() cannot be added after a catch.
  4. .then() manipulates and returns the original promise.

Answer(s): A



Given the code below:
Function myFunction(){
A =5;
Var b =1;
}
myFunction();
console.log(a);
console.log(b);
What is the expected output?

  1. Both lines 08 and 09 are executed, and the variables are outputted.
  2. Line 08 outputs the variable, but line 09 throws an error.
  3. Line 08 thrones an error, therefore line 09 is never executed.
  4. Both lines 08 and 09 are executed, but values outputted are undefined.

Answer(s): B



Which two console logs outputs NaN ?
Choose 2 answers

  1. console.log(10/ Number(`5'));
  2. console.log(parseInt(`two'));
  3. console.log(10/ `'five);
  4. console.log(10/0);

Answer(s): B,C






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