In Microsoft file structures, sectors are grouped together to form which of the following?

• A. Bitstreams
• B. Clusters
• C. Partitions
• D. Drives

Answer: (B)

Sectors are the smallest addressable units on the disk, and they’re grouped into a larger unit called a cluster (the allocation unit). The file system uses clusters as the smallest piece that can be allocated to store a file; a file may span multiple clusters. This organization helps the OS manage disk space and track where file data lives (via structures like the File Allocation Table or the NTFS Master File Table). Partitions divide a disk into separate sections, drives refer to entire physical disks, and bitstreams isn’t the standard term used here. So sectors grouped into clusters is the concept used to form the storage allocation unit. For example, with 512-byte sectors and a 4 KB cluster size, eight sectors make one cluster.