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Salesforce CRT-600 Exam Syllabus Topics:TopicDetailsTopic 1Debugging and Error Handling Throwing and Catching Errors Working with the ConsoleTopic 2JavaScript Basics Working with Strings, Numbers, and DatesTopic 3Asynchronous Programming Callback Functions Promises and AsyncAwaitTopic 4Browser and Events Document Object Model Browser Dev ToolsSalesforce Certified JavaScript Developer I Sample Questions (Q90-Q95):
NEW QUESTION # 90
A developer implements a function that adds a few values.
Function sum(num) {
If (num == undefined) {
Num =0;
}
Return function( num2, num3){
If (num3 === undefined) {
Num3 =0 ;
}
Return num + num2 + num3;
}
}
Which three options can the developer invoke for this function to get a return value of 10 ?
Choose 3 answers
Answer: C,D
NEW QUESTION # 91
Refer to code below:
Function muFunction(reassign){
Let x = 1;
var y = 1;
if( reassign ) {
Let x= 2;
Var y = 2;
console.log(x);
console.log(y);}
console.log(x);
console.log(y);}
What is displayed when myFunction(true) is called?
Answer: D
NEW QUESTION # 92
Refer to the code below:
01 const exec = (item, delay) =>{
02 new Promise(resolve => setTimeout( () => resolve(item), delay)),
03 async function runParallel() {
04 Const (result1, result2, result3) = await Promise.all{
05 [exec ('x', '100') , exec('y', 500), exec('z', '100')]
06 );
07 return `parallel is done: $(result1) $(result2)$(result3)`;
08 }
}
}
Which two statements correctly execute the runParallel () function?
Choose 2 answers
return dataC. runParallel () .then(data);D. runParallel ( ). done(function(data){
return data;
});
Answer: B,D
NEW QUESTION # 93
Refer to the following array:
Let arr = [1, 2, 3, 4, 5];
Which three options result in x evaluating as [1, 2]?
Choose 3 answer
Answer: B,D,E
NEW QUESTION # 94
developer creates a new web server that uses Node.js. It imports a server library that uses events and callbacks for handling server functionality.
The server library is imported with require and is made available to the code by a variable named server. The developer wants to log any issues that the server has while booting up.
Given the code and the information the developer has, which code logs an error at boost with an event?
console.log('ERROR', error);
});B. Server.catch ((server) => {
console.log('ERROR', error);
});C. Server.on ('error', (error) => {
console.log('ERROR', error);
});D. Try{
server.start();
} catch(error) {
Answer: C
Explanation:
console.log('ERROR', error);
}
NEW QUESTION # 95
......
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