220-1102 Operational Procedures Practice Question
A company is decommissioning old laptops that contained confidential client data. Which data disposal method ensures the data is completely unrecoverable?
⚠ Common exam trap
CompTIA often tests the misconception that a low-level format (option D) is equivalent to a secure erase or degaussing, but in reality, a low-level format only writes a single pattern and does not eliminate the possibility of recovery through magnetic remanence or hardware-level analysis.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Degauss and physically destroy the drive.
Degaussing uses a powerful magnetic field to disrupt the magnetic domains on a hard drive's platters, rendering the data permanently unrecoverable. Physically destroying the drive (e.g., shredding, crushing) ensures no residual magnetic pattern remains, making it the only method that guarantees data cannot be reconstructed even with advanced forensic tools. This combination is the standard for decommissioning drives containing highly sensitive data like confidential client information.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Degauss and physically destroy the drive.
Why this is correct
Degaussing applies a strong alternating magnetic field to randomize the magnetic domains on the platters, effectively erasing all data. Physical destruction (e.g., shredding or crushing) then renders the media completely unreadable, even with advanced forensic tools. This two-step approach meets NIST SP 800-88 purging standards for high-integrity data disposal.
- ✗
Reformat the hard drive.
Why it's wrong here
A standard reformat (quick or full in many OSes) primarily rewrites file system structures such as the boot sector and file allocation tables, not the user data sectors. The underlying magnetic transitions representing confidential files remain on the platters and can be reconstructed using data recovery software, leaving the data recoverable. Thus reformatting alone fails to sanitize media containing sensitive client information.
- ✗
Delete all files and empty the Recycle Bin.
Why it's wrong here
Deleting files marks the directory entries as unallocated and removing them from the Recycle Bin merely frees the logical space, but the actual data bits are still physically present on the disk. Recovery tools can scan for these orphaned data blocks and reassemble the file contents without overwriting them. This process does not touch the raw storage, so it provides virtually no security for confidential data.
- ✗
Perform a low-level format.
Why it's wrong here
Low-level formatting, which traditionally creates the physical sectors on a hard disk, is generally not accessible on modern SATA/SSD drives because the factory already performed it and the ATA interface does not expose the true physical structure. Even if attempted with manufacturer utilities, low-level format often only rewrites logical sector headers or performs a lengthy overwrite, but it may not guarantee cryptographic erasure nor prevent recovery from remapped or hidden sectors. Physical destruction remains the only fully assured method for decommissioning drives with confidential client data.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1102 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1102 exam.