Tööstuslik andmeside kontrolltöö 2 abimaterjal - vastused
block of characters. Synchronous tranmission uses explicit bit synchronization: ·higher bit rates, more 2. Asynchronous Disconnected Mode(ADM) for unbalanced mode (if supported).
efficient · Data is transmitted in large contigous blocks of bits or characters. ·frame = unit of combined station not ready to receive any I or S frame 3. Initialization Mode(IM) For connection-oriented service, it also prioritises use of
transmission. ·frame contains payload (data) and overhead (control bits) used for initialization of stations (download of software) or exchange of LLC resources
> Bit synchronization bits are encoded in signal transitions. · each frame transmitted as contiguous bit parameters between stations. The two disconnected modes (NDM and ADM) differ · All nodes must support the unacknowledged connectionless
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