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  2. Computer network - Wikipedia

    en.wikipedia.org/wiki/Computer_network

    An internetwork is the connection of multiple different types of computer networks to form a single computer network using higher-layer network protocols and connecting them together using routers. The Internet is the largest example of internetwork. It is a global system of interconnected governmental, academic, corporate, public, and private ...

  3. ping (networking utility) - Wikipedia

    en.wikipedia.org/wiki/Ping_(networking_utility)

    ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It is available for virtually all operating systems that have networking capability, including most embedded network administration software.

  4. Error detection and correction - Wikipedia

    en.wikipedia.org/wiki/Error_detection_and_correction

    A cyclic redundancy check (CRC) is a non-secure hash function designed to detect accidental changes to digital data in computer networks. It is not suitable for detecting maliciously introduced errors.

  5. AOL Mail

    mail.aol.com/?icid=aol.com-nav

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. Timeout (computing) - Wikipedia

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

    Network timeout preventing a Web browser from loading a page. 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.

  7. Internet checksum - Wikipedia

    en.wikipedia.org/wiki/Internet_checksum

    A carry check and correction can be performed with each addition or as a post-process after all additions. If another carry is generated by the correction, another 1 is added to the sum. To calculate the checksum, we can first calculate the sum of each 16 bit value within the header, skipping only the checksum field itself.

  8. Two Generals' Problem - Wikipedia

    en.wikipedia.org/wiki/Two_Generals'_Problem

    The Two Generals' Problem appears often as an introduction to the more general Byzantine Generals problem in introductory classes about computer networking (particularly with regard to the Transmission Control Protocol, where it shows that TCP cannot guarantee state consistency between endpoints and why this is the case), though it applies to ...

  9. Network access control - Wikipedia

    en.wikipedia.org/wiki/Network_Access_Control

    Once the policy is met, the computer is able to access network resources and the Internet, within the policies defined by the NAC system. NAC is mainly used for endpoint health checks, but it is often tied to Role-based Access. Access to the network will be given according to the profile of the person and the results of a posture/health check.