PCPP2 Network Programming Practice Question
You are configuring a server to handle high-concurrency requests. Why is it preferable to use the select.select() module over a simple blocking recv() loop?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
It enables monitoring multiple socket descriptors for I/O readiness.
select.select() allows monitoring multiple sockets simultaneously, preventing the server from blocking on a single idle connection.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It reduces the CPU usage of the Python interpreter during idle times.
Why it's wrong here
The primary benefit is non-blocking I/O multiplexing, not CPU usage reduction.
- ✗
It automatically implements multi-threaded socket handling.
Why it's wrong here
select is a synchronous I/O multiplexing technique, not a threading solution.
- ✗
It automatically handles TCP flow control packets.
Why it's wrong here
TCP flow control is handled by the OS kernel, not the select module.
- ✓
It enables monitoring multiple socket descriptors for I/O readiness.
Why this is correct
select permits waiting for multiple sockets without blocking the thread.
About these practice questions
Courseiva writes every PCPP2 question from scratch — 194 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Python Institute exam blueprint
This PCPP2 practice question is part of Courseiva's free Python Institute certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCPP2 exam.