CompTIA SY0-701 Exam - Topic 4 Question 39 Discussion

Actual exam question for CompTIA's SY0-701 exam

Question #: 39
Topic #: 4

A company must ensure sensitive data at rest is rendered unreadable. Which of the following will the company most likely use?

AHashing

BTokenization

CEncryption

DSegmentation

Show Suggested Answer

Suggested Answer: C

Encryption is a method of transforming data in a way that makes it unreadable without a secret key necessary to decrypt the data back into plaintext. Encryption is one of the most common and effective ways to protect data at rest, as it prevents unauthorized access, modification, or theft of the data. Encryption can be applied to different types of data at rest, such as block storage, object storage, databases, archives, and so on. Hashing, tokenization, and segmentation are not methods of rendering data at rest unreadable, but rather of protecting data in other ways. Hashing is a one-way function that generates a fixed-length output, called a hash or digest, from an input, such that the input cannot be recovered from the output. Hashing is used to verify the integrity and authenticity of data, but not to encrypt it. Tokenization is a process that replaces sensitive data with non-sensitive substitutes, called tokens, that have no meaning or value on their own. Tokenization is used to reduce the exposure and compliance scope of sensitive data, but not to encrypt it. Segmentation is a technique that divides a network or a system into smaller, isolated units, called segments, that have different levels of access and security.Segmentation is used to limit the attack surface and contain the impact of a breach, but not to encrypt data at rest.Reference:CompTIA Security+ Study Guide: Exam SY0-701, 9th Edition, pages 77-781; Protecting data at rest - Security Pillar3

by Emilio at Jun 11, 2025, 02:04 PM

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Portia

2 months ago

Totally agree, encryption is the standard for this!

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Maurine

2 months ago

Wait, can encryption really make data completely unreadable?

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Ria

2 months ago

I think tokenization could work too, but not as common.

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Micaela

3 months ago

Hashing is not reversible, so it’s not suitable here.

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Fanny

3 months ago

Pretty sure encryption is the way to go for data at rest.

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Karan

3 months ago

Segmentation seems off for this question; I don't recall it being about making data unreadable, just separating it.

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Alison

3 months ago

Tokenization might be a contender, but I feel like encryption is more commonly used for protecting sensitive data.

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Ronald

4 months ago

I'm not entirely sure, but I remember hashing is more for integrity checks, not really for making data unreadable at rest.

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Elke

4 months ago

I think encryption is the right choice here since it specifically makes data unreadable when stored.

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Eve

4 months ago

Encryption is the way to go. It's the most secure option for protecting sensitive data at rest.

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Georgene

4 months ago

I'm a little confused by the options. Segmentation doesn't seem like it would make data unreadable. I'll have to review my notes on data protection techniques.

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Annelle

4 months ago

Encryption is the obvious choice here. It's the standard way to protect sensitive data when it's not in use.

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Stephane

5 months ago

Hmm, I'm not sure about this one. Hashing, tokenization, and encryption all seem like they could work. I'll have to think it through carefully.

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Adolph

5 months ago

This one seems pretty straightforward. Encryption is the most likely option to render sensitive data unreadable at rest.

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Nichelle

7 months ago

Encryption is the clear choice here. Unless you want your sensitive data to be as readable as a children's book.

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Staci

6 months ago

I agree, hashing and tokenization are good too, but encryption is the best for sensitive data.

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Laila

7 months ago

Encryption is definitely the way to go. It keeps everything secure.

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Detra

8 months ago

I'm going with C. Encryption. It's like wrapping your data in a giant, unbreakable vault.

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Denny

7 months ago

Hashing is great for passwords, but encryption is better for sensitive data.

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Marleen

7 months ago

I think tokenization could also be a good option for securing data.

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Abel

7 months ago

I agree, encryption is the best way to protect sensitive data.

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Una

8 months ago

I'm not sure, but I think tokenization could also be a good choice for protecting sensitive data.

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Chana

8 months ago

I agree with Darell, encryption is the best option to render sensitive data unreadable at rest.

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Nathalie

8 months ago

Hashing, tokenization, and segmentation are all great, but if you really want to secure that data, encryption is the answer.

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Renato

8 months ago

Encryption is the way to go! Who wants to read sensitive data anyway?

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Nada

7 months ago

User 3: Hashing and tokenization are good too, but encryption is the most secure method.

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Cordie

7 months ago

User 2: I agree, encryption makes it unreadable to anyone without the proper key.

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Micheal

7 months ago

User 1: Encryption is definitely the best option for securing sensitive data.

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Kati

7 months ago

I agree, encryption is the most secure way to keep data unreadable.

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Rosenda

8 months ago

Encryption is definitely the best option for protecting sensitive data.

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Darell

8 months ago

I think the company will most likely use encryption.

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