Question 1

What are HTTP status codes?

Accepted Answer

HTTP status codes are three-digit numbers returned by web servers to indicate the result of a client's request. They are grouped into five classes: 1xx (Informational), 2xx (Success), 3xx (Redirection), 4xx (Client Error), and 5xx (Server Error).

Question 2

What is the difference between 401 and 403?

Accepted Answer

401 Unauthorized means the client has not authenticated. The server does not know who you are. 403 Forbidden means the server knows who you are but you lack permission. Re-authenticating will help with 401 but not with 403.

Question 3

What is the most common HTTP status code?

Accepted Answer

200 OK is the most common status code, indicating a successful request. Other frequently seen codes include 301 (Moved Permanently), 304 (Not Modified), 404 (Not Found), and 500 (Internal Server Error).

Question 4

How do I fix a 500 Internal Server Error?

Accepted Answer

A 500 error is a generic server-side error. Check server logs for the specific error, verify application code and configurations, ensure database connections are working, check file permissions, and review recent deployments for breaking changes.

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