220-1102 domain - 31% of the exam

Operating Systems

Operating Systems is 31% of the CompTIA A+ Core 2 (220-1102) exam. These are the objectives it covers, each with practice questions, with every answer explained.

Objectives in this domain

Sample question from this domain

Free sampleOperating Systemsmedium

Priya needs to move several 6 GB video files back and forth on a single USB flash drive that must be readable and writable on both Windows 11 and macOS without installing extra software. Which file system should she format the drive with?

  • AexFAT, because it supports files well above 4 GB and is natively read/write on both Windows and macOS Correct
  • BFAT32, because it is the most widely supported removable-media format across desktop operating systems
  • CNTFS, because it journals writes and both operating systems fully support reading and writing it
  • Dext4, because it is a modern journaling file system that stores large media files reliably
Select exFAT for removable media that must carry files larger than 4 GB with native read/write access on both Windows and macOS. The two hard constraints are files over 4 GB and native read/write on Windows and macOS. FAT32 fails the size limit, NTFS is read-only on macOS by default, and ext4 is not natively mounted by either, so exFAT is the only format that satisfies all of them.

Why A is correct: exFAT was designed for flash media, removes the 4 GB per-file limit, and is natively read/write on modern Windows and macOS, meeting every constraint.

Why B is wrong: FAT32 is broadly compatible, which makes it tempting, but it caps individual files at 4 GB, so a 6 GB video will not fit.

Why C is wrong: NTFS handles large files, but macOS mounts NTFS volumes read-only by default, so Priya could not write to the drive without third-party drivers.

Why D is wrong: ext4 is a capable Linux file system, but neither Windows nor macOS mounts it natively, so it fails the cross-platform requirement.

Other domains in this exam

See also the 220-1102 cert hub, the study guide, and the cheat sheet.

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