S - Definitions

  • S

    supernetting or Classless Inter-Domain Routing (CIDR)

    Supernetting, also called Classless Inter-Domain Routing (CIDR), is a way to aggregate multiple Internet addresses of the same class.

  • switched virtual circuit (SVC)

    In a network, a switched virtual circuit (SVC) is a temporary virtual circuit that is established and maintained only for the duration of a data transfer session.

  • symmetric communications

    Compare asymmetric communications.

  • SYN scanning

    SYN scanning is a tactic that a malicious hacker (or cracker) can use to determine the state of a communications port without establishing a full connection.

  • Synchronous Optical Network (SONET)

    SONET is the American National Standards Institute standard for synchronous data transmission on optical media.

  • system administrator (sysadmin)

    In information technology (IT), a system administrator (sysadmin) is a person who supports a multi-user computing environment and ensures continuous, optimal performance of IT services and support systems.

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