Final answer:
Direct memory access (DMA) is not the dominant form of transfer that must be supported by the operating system. Therefore statement is false.
Step-by-step explanation:
The assertion that the operating system must predominantly support direct memory access (DMA) as the primary form of transfer is false. DMA is a technique that allows devices to transfer data directly to and from the computer's memory without involving the CPU. While DMA is commonly used for high-speed data transfer in systems like disk drives, network cards, and graphics cards, it is not the only form of transfer supported by the operating system.
The operating system also supports other forms of transfer such as programmed I/O and interrupt-driven I/O. These forms of transfer involve the CPU in managing data transfers and are used in cases where the device requires more control over the transfer process or when data transfer occurs at a slower rate.