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Salesforce JavaScript-Developer-I (Salesforce Certified JavaScript Developer I) Certification Exam is a highly sought-after certification for professionals who want to demonstrate their expertise in using JavaScript within the Salesforce platform. Salesforce Certified JavaScript Developer (JS-Dev-101) certification is designed to test the candidate's knowledge of JavaScript programming concepts, as well as their ability to use JavaScript in the context of Salesforce.
NEW QUESTION # 118
A developer is trying to convince management that their team will benefit from using Node.js for a backend server that they are going to create. The server will be a web server that handles API requests from a website that the team has already built using HTML, CSS, and JavaScript.
Which three benefits of Node.js can the developer use to persuade their manager?
Answer: B,C,E
Explanation:
The correct answers are A, C, and E .
Node.js allows JavaScript to run outside the browser. That makes it useful for backend development, command-line tools, APIs, real-time applications, and server-side services.
A is correct because Node.js executes JavaScript on the server side.
A team that already knows:
HTML
CSS
JavaScript
can use JavaScript for backend development as well. This reduces the need to switch to a completely different backend language.
Example:
const http = require( ' http ' );
const server = http.createServer((req, res) = > {
res.end( ' Hello from Node.js ' );
});
server.listen(3000);
This is server-side JavaScript.
C is correct because Node.js uses a non-blocking, event-driven model.
For API servers, this is valuable because Node.js can handle many I/O operations without blocking the entire process while waiting for tasks like:
database queries
file reads
network requests
API responses
Instead of waiting synchronously, Node.js can register callbacks, promises, or async functions and continue handling other work.
E is correct because Node.js commonly installs with npm, the Node Package Manager.
npm is used to install and manage third-party libraries, such as:
Express
Socket.IO
dotenv
Jest
Axios
This makes it easier to build backend applications using reusable packages.
Now review the incorrect answers:
B is incorrect because JavaScript is not primarily a static-analysis language by default. Node.js executes JavaScript at runtime. Static checking can be added with tools such as TypeScript, ESLint, or other analyzers, but that is not an inherent Node.js benefit.
D is incorrect because Node.js does not release one major version only every few years. Its release cycle is more frequent than that, so this is not an accurate benefit statement.
Therefore, the verified answers are A, C, and E .
NEW QUESTION # 119
Given the code below:
const delay = async delay =>{
return new Promise((resolve,reject)=>{
console.log(1);
setTimeout(resolve,deleay);
});
};
const callDelay = async ()=>{
console.log(2);
const yup = await delay(1000);
console.log(3);
}
console.log(4);
callDelay();
console.log(5);
What is logged to the console?
Answer: A
NEW QUESTION # 120
Refer to the code below:
What is the value of foobDienu1 after the code executes?
Answer: D
NEW QUESTION # 121
Refer to the code below:
01 const server = require('server');
02 /* Insert code here */
A developer imports a library that creates a web server. Theimported library uses events and callbacks to start the servers Whichcode should be inserted at the line 03 to set up an event and start the web server ?
Answer: A
NEW QUESTION # 122
A developer initiates a server with the file server.js and adds dependencies in the source code ' s package.json that are required to run the server.
Which command should the developer run to start the server locally?
Answer: B
Explanation:
Comprehensive and Detailed Explanation From JavaScript/Node.js Knowledge:
In a Node.js project that uses package.json, you typically define a " start " script:
{
" scripts " : {
" start " : " node server.js "
}
}
Then you start the app with:
npm start
npm start:
* Looks up the " start " script in package.json.
* Runs the command defined there (commonly node server.js).
* This is the standard way to start a Node.js app with npm-managed dependencies.
Why others are incorrect:
* A. node start
* Tries to run a file named start with Node; does not use package.json scripts.
* C. npm start server.js
* npm start does not take the script filename as an argument in this way; it just runs the start script as defined.
* D. start server.js
* Not an npm or node command; on some shells it just tries to "start" a process but is not the standard Node/npm workflow.
Relevant concepts: package.json, npm scripts, npm start, Node entry file execution.
NEW QUESTION # 123
......
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