DSA Factory
Free Names and the web lessonsNames and the web · Stage 1 · The web · Step 1

HTTP requests and responses

Read an HTTP message, choose the right method, and interpret the status code that comes back. About 13 minutes.

Quick check

A client receives 503 Service Unavailable. Whose problem is it, and what is a sensible response?

  1. AThe server's: it is overloaded or down; retry later
  2. BThe client's: the request was malformed
  3. CThe resource has moved; follow the Location header
Show the answer

The server's: it is overloaded or down; retry later. 5xx codes mean the server failed to handle a possibly valid request.

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4 questions on this idea

Short questions that apply the idea to new cases: trace it, work out a number, put steps in order. A wrong answer explains itself.

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