The answer is a degausser, as it is the most secure method to erase hard drive data by physically randomizing the magnetic domains on the platters with a powerful magnetic field. This process, known as degaussing, destroys all stored data and renders the drive completely unusable, making data recovery impossible even with advanced forensic tools. On the CompTIA A+ Core 2 220-1202 exam, this question tests your understanding of sanitization methods under strict security policies, where degaussing is the only option that meets the requirement for irreversible data destruction. A common trap is confusing overwriting or wiping software with degaussing—remember that software methods can leave residual data recoverable by specialized equipment, while degaussing physically alters the drive’s magnetic structure. For a quick memory tip, think “Degauss destroys domains,” linking the tool to its permanent effect on the drive’s magnetic fields.
220-1202 Safety Procedures and Compliance Practice Question
This 220-1202 practice question tests your understanding of safety procedures and compliance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A technician needs to install a new hard drive in a computer that is under a strict security policy requiring all drives to be sanitized before disposal. The old drive will be replaced. What is the most secure method to ensure data cannot be recovered from the old drive?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a degausser to erase the magnetic fields.
A degausser generates a powerful magnetic field that physically randomizes the magnetic domains on the platters, effectively destroying all stored data and rendering the drive unusable. This is the only method listed that meets the strict security policy requirement for sanitization, as it prevents any possible data recovery even with advanced forensic tools.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Perform a quick format of the drive.
Why it's wrong here
A quick format only removes the file system pointers; data remains recoverable with software tools.
✓
Use a degausser to erase the magnetic fields.
Why this is correct
Degaussing destroys the magnetic structure of the platters, making data unrecoverable. This meets strict security requirements.
Related concept
Read the scenario before looking for a memorised answer.
✗
Run the Windows Disk Cleanup tool.
Why it's wrong here
Disk Cleanup removes temporary files but does not securely erase the entire drive.
✗
Delete all partitions using Disk Management.
Why it's wrong here
Deleting partitions does not overwrite the data; it only removes the partition table.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the misconception that a quick format or partition deletion is sufficient for data sanitization, when in reality these methods only remove pointers to the data, leaving the raw data recoverable with simple tools.
Detailed technical explanation
How to think about this question
Degaussing works by exposing the hard drive to a magnetic field of at least 1,000 oersteds, which realigns the magnetic domains on the platters into a random pattern, destroying both the data and the servo tracks that the drive head uses for positioning. After degaussing, the drive is typically non-functional and cannot be reused, making it suitable only for physical destruction or recycling. In contrast, software-based wiping (e.g., overwriting with zeros) is compliant with NIST SP 800-88 for clearing but not necessarily for purging, depending on the media type and sensitivity level.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 220-1202 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1202 question in full detail.
Safety Procedures and Compliance — This question tests Safety Procedures and Compliance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use a degausser to erase the magnetic fields. — A degausser generates a powerful magnetic field that physically randomizes the magnetic domains on the platters, effectively destroying all stored data and rendering the drive unusable. This is the only method listed that meets the strict security policy requirement for sanitization, as it prevents any possible data recovery even with advanced forensic tools.
What should I do if I get this 220-1202 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A technician is tasked with decommissioning a server that contains a RAID array of hard drives. The drives are still functional, but the data must be securely erased. What is the most secure method to ensure data cannot be recovered?
hard
A.Perform a quick format of each drive.
B.Overwrite the drives with zeros using a low-level format.
✓ C.Use a degausser to erase the magnetic data on the drives.
D.Physically destroy the drives with a hammer.
Why C: Degaussing destroys the magnetic field on the platters, making data unrecoverable. Physical destruction is also secure, but degaussing is the most efficient for bulk drives. Simply reformatting or overwriting may leave recoverable data.
Variation 2. A technician is tasked with disposing of a server that contains multiple SAS hard drives. The company's data destruction policy mandates that drives must be rendered unreadable by any means. Which combination of methods ensures compliance?
hard
A.Perform a full format on each drive.
✓ B.Use a degausser on each drive and then shred them.
C.Overwrite each drive with zeros using a software tool.
D.Remove the drives and store them in a locked cabinet.
Why B: For maximum security, physical destruction (shredding) is the most reliable method. Degaussing works for HDDs but not SSDs. Combining shredding with degaussing is redundant but ensures compliance. The correct answer involves physical destruction, as it renders the media completely unusable and data unrecoverable.
Last reviewed: Jun 30, 2026
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This 220-1202 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 220-1202 exam.
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