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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    The message consists only of the status line and optional header fields, and is terminated by an empty line. As the HTTP/1.0 standard did not define any 1xx status codes, servers must not [ note 1 ] send a 1xx response to an HTTP/1.0 compliant client except under experimental conditions.

  3. I-20 (form) - Wikipedia

    en.wikipedia.org/wiki/I-20_(form)

    The Form I-20 (also known as the Certificate of Eligibility for Nonimmigrant (F-1) Student Status-For Academic and Language Students) is a United States Department of Homeland Security, specifically ICE and the Student and Exchange Visitor Program (SEVP), document issued by SEVP-certified schools (colleges, universities, and vocational schools) that provides supporting information on a student ...

  4. Student and Exchange Visitor Program - Wikipedia

    en.wikipedia.org/wiki/Student_and_Exchange...

    The Student and Exchange Visitor Program (SEVP) is a program within U.S. Immigration and Customs Enforcement, which is under the U.S. Department of Homeland Security, to manage foreign students and exchange visitors in the United States through the Student and Exchange Visitor Information System (SEVIS). [1]

  5. Reasons AOL deactivates or deletes an account - AOL Help

    help.aol.com/articles/reasons-aol-deactivates-or...

    Find out more about why your AOL account may have been deactivated or deleted.

  6. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    214 Help message (A response to the HELP command) 220 <domain> Service ready 221 <domain> Service closing transmission channel 221 2.0.0 Goodbye [1] 235 2.7.0 Authentication succeeded [3] 240 QUIT 250 Requested mail action okay, completed 251 User not local; will forward 252 Cannot verify the user, but it will try to deliver the message anyway

  7. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    The original Request-URI is no longer valid, the new address is given in the Contact header field, and the client should update any records of the original Request-URI with the new value. [ 1 ] : §21.3.2

  8. List of FTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_FTP_server_return...

    RFC 2228 introduced the concept of protected replies to increase security over FTP communications. The 6xx replies are Base64 encoded protected messages that serves as responses to secure commands. When properly decoded, these replies fall into the above categories.

  9. Exit status - Wikipedia

    en.wikipedia.org/wiki/Exit_status

    These historically derive from sendmail and other message transfer agents, but they have since found use in many other programs. [16] It has been deprecated and its use is discouraged. [15] The Advanced Bash-Scripting Guide has some information on the meaning of non-0 exit status codes. [17]