The following statements are not true about HTTP Verbs:

1. "HTTP requests GET and HEAD are safe. Therefore the application developer need not be concerned about accidental changes to data that affect the server state since the webserver will prevent such changes." This statement is not entirely true. While GET and HEAD are indeed considered "safe" methods (meaning they are intended only for retrieving data, not modifying it), it's still possible for a poorly designed application to change server state in response to a GET or HEAD request. It's the responsibility of the application developer to ensure this doesn't happen.

2. "If a HTTP request method is idempotent then the method is safe." This statement is not true. Idempotent methods (like PUT and DELETE) are those that can be called many times without different outcomes. It doesn't mean they are "safe" in the sense that they don't modify data. For example, DELETE is idempotent but not safe.

3. "HTTP requests that are successfully handled must result in a 2XX (e.g. 200) status code in the response." This statement is not true. A successful HTTP request could also result in a 3XX status code, which indicates redirection.

4. "If the HTTP response to the HEAD request includes a body then one should indeed process it like a GET method." This statement is not true. The HEAD method is identical to GET except that the server must not send a message body in the response (i.e., the response is empty). If a body is included in the response to a HEAD request, it should be ignored.

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The following statements are not true about HTTP Verbs:

1. "HTTP requests GET and HEAD are safe. Therefore the application developer need not be concerned about accidental changes to data that affect the server state since the webserver will prevent such changes." This statement is not entirely true. While GET and HEAD are indeed considered "safe" methods (meaning they are intended only for retrieving data, not modifying it), it's still possible for a poorly designed application to change server state in response to a GET or HEAD request. It's the responsibility of the application developer to ensure this doesn't happen.

2. "If a HTTP request method is idempotent then the method is safe." This statement is not true. Idempotent methods (like PUT and DELETE) are those that can be called many times without different outcomes. It doesn't mean they are "safe" in the sense that they don't modify data. For example, DELETE is idempotent but not safe.

3. "HTTP requests that are successfully handled must result in a 2XX (e.g. 200) status code in the response." This statement is not true. A successful HTTP request could also result in a 3XX status code, which indicates redirection.

4. "If the HTTP response to the HEAD request includes a body then one should indeed process it like a GET method." This statement is not true. The HEAD method is identical to GET except that the server must not send a message body in the response (i.e., the response is empty). If a body is included in the response to a HEAD request, it should be ignored.

Knowee AI · Accepted Answer

The following statements are not true about HTTP Verbs:

1. "HTTP requests GET and HEAD are safe. Therefore the application developer need not be concerned about accidental changes to data that affect the server state since the webserver will prevent such changes." This statement is not entirely true. While GET and HEAD are indeed considered "safe" methods (meaning they are intended only for retrieving data, not modifying it), it's still possible for a poorly designed application to change server state in response to a GET or HEAD request. It's the responsibility of the application developer to ensure this doesn't happen.

2. "If a HTTP request method is idempotent then the method is safe." This statement is not true. Idempotent methods (like PUT and DELETE) are those that can be called many times without different outcomes. It doesn't mean they are "safe" in the sense that they don't modify data. For example, DELETE is idempotent but not safe.

3. "HTTP requests that are successfully handled must result in a 2XX (e.g. 200) status code in the response." This statement is not true. A successful HTTP request could also result in a 3XX status code, which indicates redirection.

4. "If the HTTP response to the HEAD request includes a body then one should indeed process it like a GET method." This statement is not true. The HEAD method is identical to GET except that the server must not send a message body in the response (i.e., the response is empty). If a body is included in the response to a HEAD request, it should be ignored.

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