Quick Answer
The answer is VPN, as it creates a secure encrypted tunnel over the internet to protect data in transit between an on-premises data center and a public cloud environment. A Virtual Private Network establishes this encrypted tunnel by encapsulating and encrypting all traffic at the network layer, ensuring confidentiality and integrity even across untrusted networks. On the CompTIA Cloud+ CV0-004 exam, this concept tests your understanding of secure connectivity methods for hybrid cloud architectures, where the common trap is confusing VPN with TLS (used for individual web sessions) or SSH (for remote administration). Remember that a VPN is for site-to-site tunnels, while a firewall filters traffic but does not encrypt it. A useful memory tip: think of the VPN as a secure "pipe" connecting two locations, whereas TLS is a "lock" on a single door.
This CV0-004 practice question tests your understanding of 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.
A company wants to protect data in transit between its on-premises data center and a public cloud environment. Which technology should be used to create a secure encrypted tunnel over the internet?
SSH
Why wrong: SSH is for secure shell access, not for encrypting data between data centers.
Firewall
Why wrong: Firewalls filter traffic but do not inherently provide encryption or tunnel capabilities.
TLS
Why wrong: TLS is used for securing HTTP traffic, not typically for site-to-site VPN tunnels.
VPN
VPNs (IPsec or SSL VPNs) are designed to create secure tunnels over public networks.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
VPN
A VPN (Virtual Private Network) creates an encrypted tunnel over the internet. TLS is used for web traffic, not for site-to-site tunnels. SSH is for remote admin, and a firewall is for filtering, not encrypting tunnels.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
SSH
Why it's wrong here
SSH is for secure shell access, not for encrypting data between data centers.
Firewall
Why it's wrong here
Firewalls filter traffic but do not inherently provide encryption or tunnel capabilities.
TLS
VPN
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the CV0-004 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.
What to study next
Identify which CV0-004 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Security — study guide chapter
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FAQ
Security — This question tests Security — Read the scenario before looking for a memorised answer..
The correct answer is: VPN — A VPN (Virtual Private Network) creates an encrypted tunnel over the internet. TLS is used for web traffic, not for site-to-site tunnels. SSH is for remote admin, and a firewall is for filtering, not encrypting tunnels.
Identify which CV0-004 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This CV0-004 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 CV0-004 exam.
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