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  2. Network switch - Wikipedia

    en.wikipedia.org/wiki/Network_switch

    A network switch (also called switching hub, bridging hub, Ethernet switch, and, by the IEEE, MAC bridge[1]) is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device. A network switch is a multiport network bridge that uses MAC addresses to forward data at ...

  3. User identifier - Wikipedia

    en.wikipedia.org/wiki/User_identifier

    User identifier. Unix-like operating systems identify a user by a value called a user identifier, often abbreviated to user ID or UID. The UID, along with the group identifier (GID) and other access control criteria, is used to determine which system resources a user can access. The password file maps textual user names to UIDs.

  4. User (computing) - Wikipedia

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

    t. e. A user is a person who utilizes a computer or network service. A user often has a user account and is identified to the system by a username (or user name). [a] Some software products provide services to other systems and have no direct end users.

  5. Computer network - Wikipedia

    en.wikipedia.org/wiki/Computer_network

    A metropolitan area network (MAN) is a large computer network that interconnects users with computer resources in a geographic region of the size of a metropolitan area. Wide area network A wide area network (WAN) is a computer network that covers a large geographic area such as a city, country, or spans even intercontinental distances.

  6. Identity management - Wikipedia

    en.wikipedia.org/wiki/Identity_management

    Identity management (ID management) – or identity and access management (IAM) – is the organizational and technical processes for first registering and authorizing access rights in the configuration phase, and then in the operation phase for identifying, authenticating and controlling individuals or groups of people to have access to applications, systems or networks based on previously ...

  7. Network security - Wikipedia

    en.wikipedia.org/wiki/Network_security

    Network security involves the authorization of access to data in a network, which is controlled by the network administrator. Users choose or are assigned an ID and password or other authenticating information that allows them access to information and programs within their authority. Network security covers a variety of computer networks, both ...

  8. Network access control - Wikipedia

    en.wikipedia.org/wiki/Network_Access_Control

    Description. Network access control is a computer networking solution that uses a set of protocols to define and implement a policy that describes how to secure access to network nodes by devices when they initially attempt to access the network. [3] NAC might integrate the automatic remediation process (fixing non-compliant nodes before ...

  9. Trunked radio system - Wikipedia

    en.wikipedia.org/wiki/Trunked_radio_system

    A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. In a traditional half-duplex land mobile radio system a group of users (a talkgroup) with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time ...