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  2. Automatic Warning System - Wikipedia

    en.wikipedia.org/wiki/Automatic_Warning_System

    The AWS 'sunflower' indicator inside a Class 27 showing a warning indication has been acknowledged.. Automatic Warning System (AWS) is a railway safety system invented and predominantly used in the United Kingdom.

  3. Role-based access control - Wikipedia

    en.wikipedia.org/wiki/Role-based_access_control

    Role-based access control is a policy-neutral access control mechanism defined around roles and privileges. The components of RBAC such as role-permissions, user-role and role-role relationships make it simple to perform user assignments. A study by NIST has demonstrated that RBAC addresses many needs of commercial and government organizations. [4]

  4. VLAN - Wikipedia

    en.wikipedia.org/wiki/VLAN

    Every device connected to one of its ports can send packets to any of the others. Separating ports by VLAN groups separates their traffic very much like connecting each group using a distinct switch for each group. Remote management of the switch requires that the administrative functions be associated with one or more of the configured VLANs.

  5. Gateway (telecommunications) - Wikipedia

    en.wikipedia.org/wiki/Gateway_(telecommunications)

    A gateway is a piece of networking hardware or software used in telecommunications networks that allows data to flow from one discrete network to another. Gateways are distinct from routers or switches in that they communicate using more than one protocol to connect multiple networks [1] [2] and can operate at any of the seven layers of the OSI model.

  6. Multiprotocol Label Switching - Wikipedia

    en.wikipedia.org/wiki/Multiprotocol_Label_Switching

    An MPLS router that performs routing based only on the label is called a label switch router (LSR) or transit router. This is a type of router located in the middle of an MPLS network. It is responsible for switching the labels used to route packets.

  7. Train Protection & Warning System - Wikipedia

    en.wikipedia.org/wiki/Train_Protection_&_Warning...

    AWS/TPWS acknowledgement button. TPWS temporary isolation switch. AWS/TPWS full isolation switch. If the loops are energised, an aerial on the underside of the train picks up the radio frequency signal and passes it to the receiver. A timer measures how long it takes to pass between the arming and trigger loops.

  8. Arizona apologizes for 'unacceptable chant' from fans at end ...

    www.aol.com/arizona-apologizes-unacceptable...

    Arizona has apologized after the school says some fans participated in an “unacceptable chant” following the basketball team's 96-95 loss to BYU on Saturday night. According to online video ...

  9. Automatic train control - Wikipedia

    en.wikipedia.org/wiki/Automatic_train_control

    There have been numerous different safety systems referred to as "automatic train control" over time. The first experimental apparatus was installed on the Henley branch line in January 1906 by the Great Western Railway, [1] [2] although it would now be referred to as an automatic warning system (AWS) because the driver retained full command of ...