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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.

  3. Transmission Control Protocol - Wikipedia

    en.wikipedia.org/wiki/Transmission_Control_Protocol

    An open connection, data received can be delivered to the user. The normal state for the data transfer phase of the connection. FIN-WAIT-1 Server and client Waiting for a connection termination request from the remote TCP, or an acknowledgment of the connection termination request previously sent. FIN-WAIT-2 Server and client

  4. Timeout (computing) - Wikipedia

    en.wikipedia.org/wiki/Timeout_(computing)

    Timeout (computing) In telecommunications and related engineering (including computer networking and programming ), the term timeout or time-out has several meanings, including: A network parameter related to an enforced event designed to occur at the conclusion of a predetermined elapsed time. A specified period of time that will be allowed to ...

  5. TCP congestion control - Wikipedia

    en.wikipedia.org/wiki/TCP_congestion_control

    Transmission Control Protocol (TCP) uses a congestion control algorithm that includes various aspects of an additive increase/multiplicative decrease (AIMD) scheme, along with other schemes including slow start [ 1] and a congestion window (CWND), to achieve congestion avoidance. The TCP congestion-avoidance algorithm is the primary basis for ...

  6. National Broadband Network - Wikipedia

    en.wikipedia.org/wiki/National_Broadband_Network

    The National Broadband Network ( NBN) is an Australian national wholesale open-access data network. It includes wired and radio communication components rolled out and operated by NBN Co, a government-owned corporation. Internet service providers, known under NBN as retail service providers or RSPs, contract with NBN to access the data network ...

  7. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more.

  8. Watchdog timer - Wikipedia

    en.wikipedia.org/wiki/Watchdog_timer

    A watchdog timer ( WDT, or simply a watchdog ), sometimes called a computer operating properly timer ( COP timer ), [ 1] is an electronic or software timer that is used to detect and recover from computer malfunctions. Watchdog timers are widely used in computers to facilitate automatic correction of temporary hardware faults, and to prevent ...

  9. Network Time Protocol - Wikipedia

    en.wikipedia.org/wiki/Network_Time_Protocol

    t. e. The Network Time Protocol ( NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable- latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in current use. NTP was designed by David L. Mills of the University of Delaware .