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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    The response must include a WWW-Authenticate header field containing a challenge applicable to the requested resource. See Basic access authentication and Digest access authentication. 401 semantically means "unauthenticated", the user does not have valid authentication credentials for the target resource. 402 Payment Required Reserved for ...

  3. Cisco certifications - Wikipedia

    en.wikipedia.org/wiki/Cisco_certifications

    Cisco Certifications are the list of the Certifications offered by Cisco Systems.There are four to five (path to network designers) levels of certification: Associate (CCNA/CCDA), Professional (CCNP/CCDP), Expert (CCIE/CCDE) and recently, Architect (CCAr: CCDE previous), as well as nine different paths for the specific technical field; Routing & Switching, Design, Industrial Network, Network ...

  4. CCIE Certification - Wikipedia

    en.wikipedia.org/wiki/CCIE_Certification

    The CCIE lab exam was first introduced in 1993 with a two-day test. As there was an overwhelming demand for CCIE certification, the waiting time for taking the lab exam was at least six months. In October 2001, Cisco updated the two-day lab exam to one day by removing some of the testing measures like diagramming, IP addressing, and ...

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  6. List of TCP and UDP port numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_TCP_and_UDP_port...

    The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses, [1] However, many unofficial uses of both well-known and registered port numbers occur in practice. Similarly, many of the official assignments refer to protocols that were never or are no longer in common use.

  7. Java version history - Wikipedia

    en.wikipedia.org/wiki/Java_version_history

    The Java language has undergone several changes since JDK 1.0 as well as numerous additions of classes and packages to the standard library.Since J2SE 1.4, the evolution of the Java language has been governed by the Java Community Process (JCP), which uses Java Specification Requests (JSRs) to propose and specify additions and changes to the Java platform.

  8. Walmart - Wikipedia

    en.wikipedia.org/wiki/Walmart

    Walmart Inc. (/ ˈ w ɔː l m ɑːr t / ⓘ; formerly Wal-Mart Stores, Inc.) is an American multinational retail corporation that operates a chain of hypermarkets (also called supercenters), discount department stores, and grocery stores in the United States and 23 other countries.

  9. Starbucks - Wikipedia

    en.wikipedia.org/wiki/Starbucks

    In August 2002, Starbucks provided free Wi-Fi in the United Kingdom, although in the past, a Starbucks rewards card was required. [149] [150] On July 1, 2010, Starbucks offered free Wi-Fi in all of its stores in the U.S. and Canada. [151] [152] [153] In August 2010, Starbucks began offering free Wi-Fi in Germany via BT Openzone. [154]