What does LBA stand for in disk addressing?

• A. Logical Block Address
• B. Local Byte Address
• C. Link Byte Allocation
• D. Logical Binary Access

Answer: (A)

Disk addressing uses a linear block model. LBA stands for Logical Block Address. It assigns a unique number to each block (sector) on the disk, starting from zero, creating a simple, sequential view of the drive. This abstraction hides the drive’s physical geometry (cylinders, heads, sectors) and lets the operating system, file systems, and forensic tools read or copy data by referring to a block number rather than worrying about how the data is physically laid out. This makes modern disks easier to manage, since CHS-style addressing is obsolete and varied across devices. In practice, imaging or analyzing data can be done by stepping through sectors via their LBA numbers, with the underlying translation to physical locations handled as needed. Local Byte Address isn’t a standard term for disk addressing, and Logical Binary Access isn’t used to describe this concept.