EasyExperience level: 0-2 years · 3-5 years1 min read

Explain the main HTTP status code families.

Reviewed by Gurusankar M.

Asked inInfosysTCSAccenture
Report issue
On this page

Concept Made Simple

Coffee Chat Question

“Explain the main HTTP status code families.”

Remember It Faster

Mind Map Answer

2xx
Success — 200 OK, 201 Created, 204 No Content
3xx
Redirect — 301 Moved, 304 Not Modified
4xx
Client error — 400, 401, 403, 404, 429
5xx
Server error — 500, 502, 503

Quick read: 4xx is 'you messed up', 5xx is 'we messed up'.

Think Beyond the Expected

What If?

What is the difference between 401 and 403?

401 Unauthorized means 'we don't know who you are' (authenticate first). 403 Forbidden means 'we know who you are, but you are not allowed here'.

Continue Learning with AI

Take this question deeper with your favourite AI assistant. Pick a depth, copy the prompt, or open it directly — AI is your learning companion, not a shortcut.

Plain-language foundations

I'm preparing for a software engineering interview and want to understand this from scratch, as a beginner.

Topic: Status Codes (REST APIs)
Interview question: "Explain the main HTTP status code families."

Please:
1. Explain the core idea in simple, plain language, using an everyday analogy.
2. Define any technical terms you use.
3. Walk through one small, concrete example.
4. Finish with a single sentence I can easily remember.

Keep the tone friendly and assume I'm new to this topic.
Open inChatGPTGeminiClaude

Was this answer helpful?

Affiliate links

Tools for Your Developer Workspace

Equipment for a comfortable, productive setup.

As an Amazon Associate I earn from qualifying purchases.