With rabbits, a common myth is that if you touch a baby rabbit the mother will no longer care for it. 9 times out of 10, the mother will return to care for the babies after they have been handled.
QNX is not a Linux distribution, normal or otherwise. QNX is POSIX compliant. That means that much of the programming interface and many of the utilities are the same. The underlying OS is very different in structure. There is little compatibility for drivers. With Linux the operating system functions as a very large monolithic piece of code.
Although the concept of QoS encompasses a variety of standards and mechanisms, QoS for Windows Server 2003 IP-based networks is centered on traffic control, which includes mechanisms for prioritization and traffic shaping (the smoothing of traffic bursts).