Network Basic Input Output System (NetBIOS) is developed by IBM. NetBIOS defines a software interface and a standard method for providing communication interfaces between applications and connection media. NetBIOS is a session layer protocol that is applied to a variety of LAN (Ethernet, Token Ring, etc.) and WAN, such as TCP / IP, PPP, and X.25.
NetBIOS will release applications that need to know network details including error recovery (session mode). The NetBIOS request appears in the form of a network control block (NCB: NetWork Control Block), and the NCB contains information such as information storage location and target name.
NetBIOS supports sessions and transport services in an open system interconnect (OSI) mode, but does not support transmission of standard frames or data frames. NetBIOS User Extended Interface (Netbeui) supports standard frame formats, which is an expansion protocol of NetBIOS on the network layer and transport layer.
NetBIOS supports two communication modes: session or Datagram. The session mode refers to two computers to establish a session connection that allows you to process a lot of information and support error monitoring and recovery. Data report mode is a "unconnected" (information independently sent) operation, and the amount of information sent is small, and error monitoring and recovery is available. In addition, the datastime also supports the operations that broadcast information to each computer in the LAN.
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