Question: 18. Solid-state drives consist of a microcontroller and flash memory. T/ 19. The disadvantage of RAID-1 is that it is costly and requires large memory

18. Solid-state drives consist of a microcontroller and flash memory. T/ 19. The disadvantage of RAID-1 is that it is costly and requires large memory space. TIF 20. A) Sectors B) Segments C) Paths D) Symmetry are divisions of concentric circles called tracks in disk drives. 21. is the oldest and most cost-effective of all mass-storage devices. A) Magnetic drive B) Compact dick C) Magnetic tape D) Floppy disk 22. Calculate the overall speedup of a system that spends 40% of its time in calculations with a processor upgrade that provides for 100% greater throughput. 23. Suppose your company has decided that it needs to make certain busy servers 30% faster. Processes in the workload spend 70% of their time using the CPU and 30% on LO. In order to achieve an overall system speedup of 30%. How much faster does the CPU need to be

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