In general we'd like a
[ Select ]
404
301
200
500
503
OK status code back from the server , but if we make a mistake in the url we will probably a
[ Select ]
200
400
500
404
301
status code because the page isn't found .

Question

In general we'd like a 
[ Select ]
404
301
200
500
503
 OK status code back from the server , but if we make a mistake in the url we will probably a 
[ Select ]
200
400
500
404
301
 status code because the page isn't found .

BlackTom AI · Accepted Answer

200 OK indicates the request succeeded, so it’s the desired response when a page loads correctly; 404 Not Found indicates the server could not find the requested resource, so it’s the expected response when a URL is wrong.

1. Relevant knowledge points and concepts
- HTTP status codes are three-digit responses grouped by their leading digit: 2xx = success, 3xx = redirection, 4xx = client error, 5xx = server error.
- 200 (OK): The request was successful and the server returned the requested resource.
- 301 (Moved Permanently): The resource has a new permanent URI; the client should use the new location.
- 400 (Bad Request): The server cannot process the request due to malformed syntax.
- 404 (Not Found): The server cannot find the requested resource (URL doesn’t map to a resource).
- 500 (Internal Server Error): The server encountered an unexpected condition preventing it from fulfilling the request.
- 503 (Service Unavailable): The server is currently unable to handle the request (temporarily overloaded or down).

2. Step-by-step reasoning
- When we successfully request a page and it’s served without error, the correct classification is a 2xx success code; the canonical success code is 200 OK.
- When the URL is mistyped or refers to a resource that doesn’t exist on the server, the server responds with a 4xx client error indicating the resource is not found—specifically 404 Not Found.

3. Intermediate steps / checks (conceptual)
- Confirm that the page loads and returns content → classify as 200.
- Confirm that server responds “resource not found” or cannot match the URL → classify as 404.
- Redirection (301) would occur if the resource exists but under a new URI; 400 would indicate a malformed request rather than a missing page; 5xx codes indicate server-side faults, not a missing file.

4. Why the correct answers are correct
- 200 is correct because it is the standard success response when the server fulfills the request.
- 404 is correct because a wrong URL typically maps to “not found,” which is what 404 precisely denotes.

5. Why other options are incorrect (brief)
- 301: implies redirection, not a normal successful page load.
- 400: indicates a malformed request, not simply a non-existent path.
- 500 and 503: indicate server-side errors/unavailability, not a missing resource.

6. Conclusion
The correct choices are 200 for the OK status and 404 for a mistyped/missing page. This matches the provided answer: ["200", "404"].

In general we'd like a [ Select ] 404 301 200 500 503 OK status code back from the server , but if we make a mistake in the url we will probably a [ Select ] 200 400 500 404 301 status code because the page isn't found . 多重下拉选择题

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