child_process.execFileSync(file[, args][, options]) function in Node.js — Node.js Technical Interview Questions & Answers

child_process.execFileSync(file[, args][, options]) function in Node.js

child_process.execFileSync(file[, args][, options]) function in Node.js

  • child_process.execFileSync(file[, args][, options]) function (in nod) is a Node.js topic. In plain words you use it for use all CPU cores in production box. Don’t start with a slogan — start with that picture.
  • Smallest example: cluster.fork or PM2. Type it, run it, and say what you see. If you can do that from memory, you know child_process.execFileSync(file[, args][, options]) function (in nod).
  • From the example next to this theory: child_process.
  • Trap: in-memory session without sticky. Fix that before you talk about advanced Node.js.
  • Viva: what is child_process.execFileSync(file[, args][, options]) function (in nod)? Then show cluster.fork or PM2. Then name the trap.

Technical Interview Tip: What is child_process.execFileSync(file[, args][, options]) function (in nod)? Show this: cluster.fork or PM2. Trap: in-memory session without sticky.

Code Examples for child_process.execFileSync(file[, args][, options]) function in Node.js

child_process.execFileSync(file[, args][, options]) function in Node.js — working example

const fs = require("fs");
const path = require("path");

const file = path.join(__dirname || ".", "demo.txt");
fs.writeFileSync(file, "hello node\n");
const text = fs.readFileSync(file, "utf8");
console.log(text.trim());
fs.unlinkSync(file);

child_process.execFileSync(file[, args][, options]) function in Node.js — fs reads/writes files. Prefer promises/async APIs in real apps.

How to Explain child_process.execFileSync(file[, args][, options]) function in Node.js to an Interviewer

What is child_process.execFileSync(file[, args][, options]) function (in nod)?

Used for use all CPU cores production box Not just the heading

Give one small example of child_process.execFileSync(file[, args][, options]) function (in nod).

cluster.fork or PM2 child_process

What mistake do beginners make with child_process.execFileSync(file[, args][, options]) function (in nod)?

in-memory session without sticky Show the fix

Where do you use child_process.execFileSync(file[, args][, options]) function (in nod)?

production box use all CPU cores