The correct choice is to implement Transparent Data Encryption (TDE) to minimize performance impact, as it directly addresses the database administrator’s concern while satisfying the security policy. TDE operates at the storage layer, encrypting data automatically before it is written to disk and decrypting it when read into memory, which offloads the cryptographic overhead from application logic and avoids costly schema or query changes. On the Systems Security Certified Practitioner (SSCP) exam, this question tests your understanding of balancing security controls with operational efficiency—a common trap is assuming all encryption equally degrades performance, when TDE’s design specifically reduces that impact. Remember the key distinction: TDE protects data at rest without altering how applications access it, making it the least disruptive encryption method. A useful memory tip is “TDE: Transparent to the app, Decrypts on the disk.”
SSCP Security Operations and Administration Practice Question
This SSCP practice question tests your understanding of security operations and administration. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
An organization's security policy requires that all data at rest be encrypted. A database administrator objects, stating that encryption will degrade performance. What is the best response?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Implement transparent data encryption (TDE) to minimize performance impact.
Transparent Data Encryption (TDE) encrypts data at rest at the storage layer, automatically encrypting data before it is written to disk and decrypting it when read into memory. This minimizes performance impact because encryption/decryption occurs outside the application logic and does not require schema changes, making it the best response to the DBA's concern while still meeting the policy requirement.
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.
✗
Remove the encryption requirement for databases.
Why it's wrong here
This violates security policy and exposes data.
✗
Encrypt only the backup files, not the live database.
Why it's wrong here
This leaves live data unencrypted, violating policy.
✗
Use column-level encryption on sensitive columns only.
Why it's wrong here
Column-level encryption can be more complex and may still impact performance.
✓
Implement transparent data encryption (TDE) to minimize performance impact.
Why this is correct
TDE encrypts the entire database transparently with low overhead.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may choose column-level encryption (Option C) thinking it is more targeted and thus less impactful, but they overlook that TDE is designed specifically to minimize performance impact by operating at the storage layer without requiring application changes.
Detailed technical explanation
How to think about this question
TDE typically uses a two-tier key architecture: a Database Encryption Key (DEK) is stored in the database boot record and protected by a certificate or asymmetric key stored in the master database. When data is read, the DEK decrypts the data pages in memory, and when written, it encrypts them, with the encryption/decryption happening at the page level (typically 8 KB or 16 KB pages) rather than row-by-row, which reduces overhead. In real-world scenarios, TDE can add 3–5% CPU overhead on the database server, but this is often negligible compared to the performance hit of application-level or column-level encryption, especially on modern hardware with AES-NI instruction set support.
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 developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Security Operations and Administration — This question tests Security Operations and Administration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Implement transparent data encryption (TDE) to minimize performance impact. — Transparent Data Encryption (TDE) encrypts data at rest at the storage layer, automatically encrypting data before it is written to disk and decrypting it when read into memory. This minimizes performance impact because encryption/decryption occurs outside the application logic and does not require schema changes, making it the best response to the DBA's concern while still meeting the policy requirement.
What should I do if I get this SSCP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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