What is rotational delay in input/output (I/O) scheduling? It is the time required to move the read/write head from the current position to the desired data. It is the time required to transfer the desired number of bits to or from the disk. It is the time required to wait for the desired data item to pass under the read/write head. It is the time required to wait for the desired track to pass under the read/write head. Which block allocation scheme requires a file copy if a block following the last file block is occupied? Clustered Linked Indexed Contiguous Which media benefits from wear leveling? Hard disk drive Dynamic random-access memory Magnetic tape Nonvolatile memory device Which storage is accessible to a client via Serial AT Attachment (SATA)? Storage area network (SAN) Host attached storage Network attached storage (NAS) Cloud storage