[Solved] What will be the output of this Node.js cluster code snippet?const cluster = require('cluster'); if (cluster.isPrimary) { cluster.fork(); cluster.fork(); console.log('Number of workers:', Object.... | Node.js

Node.js - Cluster Module

What will be the output of this Node.js cluster code snippet?

const cluster = require('cluster');
if (cluster.isPrimary) {
  cluster.fork();
  cluster.fork();
  console.log('Number of workers:', Object.keys(cluster.workers).length);
} else {
  console.log('Worker PID:', process.pid);
}

ANumber of workers: 1 and 1 time 'Worker PID: <pid>'

BNumber of workers: 2 and 2 times 'Worker PID: <pid>'

CNumber of workers: 0 and 2 times 'Worker PID: <pid>'

DNumber of workers: 2 and 1 time 'Worker PID: <pid>'

Step-by-Step Solution

Solution:

Step 1: Fork two workers
cluster.fork() is called twice, creating 2 workers.
Step 2: Master logs worker count, workers log their PID
Master logs 'Number of workers: 2'. Each worker logs its PID once.
Final Answer:
Number of workers: 2 and 2 times 'Worker PID: <pid>' -> Option B
Quick Check:
Fork count matches worker logs [OK]

Quick Trick: Each fork creates one worker process [OK]

Common Mistakes:

Assuming only one worker is created
Confusing master and worker output counts
Ignoring Object.keys(cluster.workers).length

Master "Cluster Module" in Node.js

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What will be the output of this Node.js cluster code snippet?

Step 1: Fork two workers

Step 2: Master logs worker count, workers log their PID

Final Answer:

Quick Check:

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