This CCSP practice question tests your understanding of cloud application security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which TWO measures are effective for securing container images in a cloud environment?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Sign images to ensure integrity
Signing container images (e.g., using Docker Content Trust or Notary) ensures integrity and authenticity by cryptographically verifying that the image has not been tampered with since it was signed. This prevents man-in-the-middle attacks and the deployment of malicious images, which is a critical security measure in cloud environments where images are pulled from remote registries.
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.
✗
Store images in a public registry without scanning
Why it's wrong here
Public registries without scanning expose to known vulnerabilities.
✓
Sign images to ensure integrity
Why this is correct
Image signing verifies the image has not been tampered with.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use latest tags without version pinning
Why it's wrong here
Using latest tags can lead to unexpected changes.
✗
Run containers with root privileges
Why it's wrong here
Running as root increases risk of container escape.
✓
Scan images for vulnerabilities before deployment
Why this is correct
Scanning identifies known vulnerabilities in images.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
ISC2 often tests the misconception that 'latest tags are safe because they always point to the most recent version,' but the trap is that 'latest' is a mutable tag that can silently introduce breaking changes or vulnerabilities, whereas version pinning (e.g., using a specific digest or semantic version) ensures deterministic and auditable deployments.
Detailed technical explanation
How to think about this question
Image signing typically uses a private key to create a digital signature over the image manifest, which is stored in a trusted registry (e.g., Docker Content Trust leverages The Update Framework (TUF) for key management and delegation). When a container runtime pulls a signed image, it verifies the signature against a trusted public key; if verification fails, the pull is rejected. In a real-world scenario, a signed base image (e.g., from a vendor) ensures that no intermediate registry or network attacker has injected a backdoor, which is especially critical in multi-tenant cloud environments.
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 security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
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.
Cloud Application Security — This question tests Cloud Application Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Sign images to ensure integrity — Signing container images (e.g., using Docker Content Trust or Notary) ensures integrity and authenticity by cryptographically verifying that the image has not been tampered with since it was signed. This prevents man-in-the-middle attacks and the deployment of malicious images, which is a critical security measure in cloud environments where images are pulled from remote registries.
What should I do if I get this CCSP 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.
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This CCSP practice question is part of Courseiva's free ISC2 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 CCSP exam.
Question Discussion
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