Help me answer any of this following

DMA ( involving at all a. True b. False Direct Memory Access) can handle the data transferring between device and memory directly without CPU 23. e to write programs that can access any I/O device without having to specify the device in advance a. True A key concept in the design of VO software is known as device independence. What it means is that we should be b. False 24. RAID is used for improve disk performance but it reduces the reliability a. True b. False 25. Resource deadlocks only can be caused by non-preemptable resources that are shared by the processes. a. True b. False 26. If a disk has a bad sector in a track, then all sectors in the track must be shifted to bypass the bad one. a. True b. False 27. The classical dining philosopher problem may have potential starvation and livelock issues a. True b. False 28. Any regular Semaphore can be implemented using Mutex only a. True b. False 29. If the owner of a hard linked file deletes the file, then the file will not be accessible by any user. a. True b. False 30. There is a deadlock in the following deadlock model, where D and C are processes, and U and T are resources. a. True b. False