21. Isochronous data transfer is unreliable since it does not guarantee or predict transmission or receiving of data. 22. "Hot Plug" capability does not allow peripherals to be connected unless PC power is shut down True/False True/ False 23. USB uses three pairs of wire cables to connect to devices True/False 24. USB 1.0 data transmission rate is up to 12Mbps per second with 1.0 Mbps sub channels for low data True/False 25. USB supports two types of transfers; Stream and Message True/False 26. USB protocol supports hardware and software error handling 27. True/False Defines the register level interface that enables USB Controller to communicate with the host and the operating system 28. 29 defines how the USB controller talks to the host computer and its operating system. is the software that managers the host controller operation and its responsible to scheduling the traffic on USB 30. interfaces to the USB system software in the host via HCD