Web/API/HTTP

Question 1

HTTP Status codes in GENERAL

Answer 1

ISRCS
* 1xx (I)nformational – the request was received, continuing process
* 2xx (S)uccessful – the request was successfully received, understood, and accepted
* 3xx (R)edirection – further action needs to be taken in order to complete the request
* 4xx (C)lient error – the request contains bad syntax or cannot be fulfilled
* 5xx (S)erver error – the server failed to fulfil an apparently valid request

Question 2

HTTP OK

Answer 2

200

Question 3

HTTP Verbs

Answer 3

1. GET
2. PUT
3. POST
4. PATCH
5. DELETE
6. HEAD
7. CONNECT

Question 4

HTTP Method used to open a tunnel

Answer 4

CONNECT

The client asks an HTTP Proxy server to tunnel the TCP connection to the desired destination. The server then proceeds to make the connection on behalf of the client. Once the connection has been established by the server, the Proxy server continues to proxy the TCP stream to and from the client.

Question 5

HTTP Unauthorized status code (unautheticated)

Answer 5

401

Question 6

HTTP Forbidden status code (client is known but does not have access rights to the content)

Answer 6

403

Question 7

HTTP Not Found status code

Answer 7

404

Question 8

HTTP Internal Server Error status code

Answer 8

500

The server has encountered a situation it does not know how to handle.

Question 9

HTTP Service Unavailable status code

Answer 9

503

The server is not ready to handle the request

Question 10

HTTP Bad Request status code

Answer 10

400

The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing).

Question 11

HTTP Moved Permanently status code

Answer 11

301

Question 12

HTTP Temporary Redirect status code

Answer 12

307

Question 13

HTTP Permanent Redirect status code

Answer 13

308

Question 14

HTTP Cache fields

Answer 14

• Cache-Control
• Last-Modified
• Expires