Final answer:
The statement is true, and the two primary methods of improving disk I/O performance are disk scheduling, which optimizes the order of operations, and disk cache, which uses memory to buffer frequently accessed data.
Step-by-step explanation:
The statement is true: Two of the most widely used approaches to improve disk I/O performance are disk scheduling and disk cache. Disk scheduling is a method used by operating systems to decide which order disk I/O operations should be performed to improve performance and minimize the time for read/write operations.
Meanwhile, disk cache refers to the use of volatile memory as a buffer to store data that is frequently accessed or recently written, to speed up the process of disk I/O. By caching this data, the system reduces the need to read from or write to the disk, thereby speeding up overall disk I/O performance.
True. Disk scheduling and disk cache are two widely used approaches to improve disk I/O performance.
Disk scheduling is a technique used to organize and optimize the order in which requests for disk operations are processed. It helps reduce the seek time and track-to-track movement of the disk's read/write head.
Disk cache is a portion of the computer's memory that is used to store frequently accessed data from the disk. By keeping this data in cache, the computer can access it more quickly, avoiding the need to fetch it from the slower disk storage.