Optical disk                systems contain a few drives and numerous disks that can be loaded into one of the drives automatically (by a robot arm) on demand.

Related MCQs

• There are “record-once” versions of the compact disk and digital video disk, which can be written only once; such disks are also called                      disks.
•                              partitions data and parity among all N+1 disks, instead of storing data in N-disks and parity in one disk.
• Hybrid disk drives are hard-disk systems that combine magnetic storage with a smaller amount of flash memory, which is used as a cache for frequently accessed data.
• With multiple disks, we can improve the transfer rate as well by                        data across multiple disks.
• The time for repositioning the arm is called the                  and it increases with the distance that the arm must move.
• Optical disk technology uses
•                      is increasingly being used in server systems to improve performance by caching frequently used data, since it provides faster access than disk, with larger storage capacity than main memory.
• Which of the following occupies boot record of hard and floppy disks and activated during computer startup?
• Bitmaps can be combined with regular B+- tree indices for relations where a few attribute values are extremely common, and other values also occur, but much less frequently.
• Tuples are generated                        in producer-driven pipelining, they are generated                  on demand, in demand- driven pipelining.