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What is the primary reason Node.js applications utilize child processes?

easy📝 Conceptual Q1 of 15
Node.js - Child Processes
What is the primary reason Node.js applications utilize child processes?
ATo simplify asynchronous code by avoiding callbacks
BTo handle CPU-intensive tasks without blocking the event loop
CTo reduce memory usage by sharing the same process space
DTo enable synchronous file system operations
Step-by-Step Solution
Solution:

  1. Step 1: Understand Node.js event loop

    Node.js runs on a single thread and uses an event loop to handle asynchronous operations.

  2. Step 2: Identify CPU-intensive task impact

    CPU-heavy tasks block the event loop, causing delays in processing other events.

  3. Step 3: Role of child processes

    Child processes run independently, allowing CPU-intensive tasks to execute without blocking the main thread.

  4. Final Answer:

    To handle CPU-intensive tasks without blocking the event loop -> Option B

  5. Quick Check:

    Child processes prevent event loop blocking [OK]
Quick Trick: Child processes offload heavy tasks from main thread [OK]
Common Mistakes:
  • Thinking child processes reduce memory by sharing process space
  • Assuming child processes simplify asynchronous code
  • Believing child processes enable synchronous operations

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