■ Its topology can be changed to ring type only by adding a Ethernet Cable
■ Switchover in case of device or cable failure Only takes One Cycle
■ Redundant masters also supported
■ Failure of a device does not lead to complete networks shut down.
■ Drag chain Application
Robustness of RTOS- QNX
■ QNX is a TRUE Microkernel
■ Each Application, Device Driver, System Resources are built as an individual piece of software, completely independent from one another
■ MMU support providing full protection
■ Each individual piece of software has complete isolation and protection for all other pieces of software
■ If any software fails, the Microkernel and all other software will not be affected
■ Critical Process Monitor (HAM) monitors components and sends notification of component failure
■ Guardian process provide software failover for HAM to insure the CPM can not be a single point of failure
■ Client side library allows you to easily design your system to reconnect instantly and transparently
■ CPM provides heartbeat services to detect component hangs – this allows the system to monitor itself
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