Optical disk technology uses

Related MCQs

• 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.
• 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.
• 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.
• The disk controller uses                  at each sector to ensure that the data is not corrupted on data retrieval.
•                      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.
• The primary medium for the long-term online storage of data is the                       where the entire database is stored on magnetic disk.
• In magnetic disk                  stores information on a sector magnetically as reversals of the direction of magnetization of the magnetic material.
• A                      is the smallest unit of information that can be read from or written to the disk.
•                              partitions data and parity among all N+1 disks, instead of storing data in N-disks and parity in one disk.
• A typical tape drive is                  a typical disk drive.