COMPTIA A+ Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

Chkdsk is the correct answer because it is the command that replaced scandisk in newer versions of Windows. While the other options mentioned are also useful tools for managing hard drive space and optimizing performance, they do not serve the same purpose as scandisk or chkdsk. Defrag and Disk Cleanup help to organize and free up space on a hard drive, while SFC (System File Checker) is used to scan and repair corrupted system files. Therefore, they are not suitable replacements for scandisk, which is used to check the file system for errors and fix them.