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Que. Various storage devices used by an operating system can be arranged as follows in increasing order of accessing speed:
a. Magnetic tapes → magnetic disks → optical disks →  electronic disks →  main memory →  cache →  registers
b. Magnetic tapes → magnetic disks → electronic disks → optical disks → main memory → cache → registers
c. Magnetic tapes → electronic disks → magnetic disks → optical disks → main memory → cache → registers
d. Magnetic tapes → optical disks → magnetic disks →electronic disks →  main memory → cache → registers
Answer:Magnetic tapes → electronic disks → magnetic disks → optical disks → main memory → cache → registers
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