June 8th, 2011 
admin 
HTTP level
At the HTTP level, a 404 response code is followed by a human-readable “reason phrase”.
The HTTP specification suggests the phrase “Not Found”[1] and many web servers by default issue an HTML page that includes both the 404 code and the “Not Found” phrase.
A 404 error is often returned when pages have been moved or deleted. Denver Used Cars . In the first case, a better response is to return a 301 Moved Permanently response,
which can be configured in most server configuration files, or through URL rewriting; in the second case, a 410 Gone should be returned. boston computer fix . get your girlfriend back ebook . Because these two
options require special server configuration, most websites do not make use of them.
404 errors should not be confused with DNS errors, which appear when the given URL refers to a server name that does not exist.
A 404 error indicates that the server itself was found, but that the server was not able to retrieve the requested page.
To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.
- Ralph Waldo Emerson
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