This PK0-005 practice question tests your understanding of basics of it infrastructure and it project management. 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 project involves integrating an on-premises IT infrastructure with a public cloud provider. The project team must ensure secure connectivity. Which of the following should be implemented?
DNS
Why wrong: DNS resolves domain names to IP addresses and does not provide security.
VPN
A VPN secures data in transit over the internet by encrypting the connection.
NAT
Why wrong: NAT translates private IP addresses to public ones, but does not secure the connection.
VLAN
Why wrong: A VLAN logically separates network traffic but does not provide encryption or security across the internet.
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) is the correct choice because it creates an encrypted tunnel over the public internet between the on-premises infrastructure and the public cloud provider, ensuring secure connectivity. Technologies like IPsec or TLS-based VPNs authenticate both endpoints and encrypt all traffic, preventing eavesdropping and tampering during transit.
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.
DNS
Why it's wrong here
DNS resolves domain names to IP addresses and does not provide security.
VPN
Why this is correct
A VPN secures data in transit over the internet by encrypting the connection.
Related concept
Read the scenario before looking for a memorised answer.
NAT
Why it's wrong here
NAT translates private IP addresses to public ones, but does not secure the connection.
VLAN
Why it's wrong here
A VLAN logically separates network traffic but does not provide encryption or security across the internet.
Common exam traps
The trap here is that candidates often confuse VPN with VLAN, thinking both provide secure segmentation, but VLANs only isolate traffic within a local network and offer no encryption or protection across the internet.
Detailed technical explanation
A site-to-site VPN typically uses IPsec in tunnel mode, encapsulating the original IP packet in a new IP header with ESP (Encapsulating Security Payload) for encryption and authentication. In cloud integration, the VPN gateway on-premises and the cloud VPC's virtual gateway negotiate Security Associations (SAs) using IKEv2, with AES-256 encryption and SHA-256 hashing, ensuring data confidentiality and integrity even over untrusted networks.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
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FAQ
Basics of IT Infrastructure and IT Project Management — This question tests Basics of IT Infrastructure and IT Project Management — Read the scenario before looking for a memorised answer..
The correct answer is: VPN — A VPN (Virtual Private Network) is the correct choice because it creates an encrypted tunnel over the public internet between the on-premises infrastructure and the public cloud provider, ensuring secure connectivity. Technologies like IPsec or TLS-based VPNs authenticate both endpoints and encrypt all traffic, preventing eavesdropping and tampering during transit.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This PK0-005 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 PK0-005 exam.
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