- A
Private DNS zones
Why wrong: Private zones are for DNS resolution within GCP.
- B
DNS peering
Why wrong: Peering is for sharing DNS between networks.
- C
Inbound DNS policy
Why wrong: Inbound policy is for forwarding from on-premises to GCP.
- D
Outbound DNS forwarding (conditional forwarding)
This is the feature for forwarding specific domains to on-premises DNS.
Question 259 of 1,000
PCNE Implementing Hybrid Interconnectivity Practice Question
This PCNE practice question tests your understanding of implementing hybrid interconnectivity. 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.
A company needs to resolve on-premises DNS names from Google Cloud VMs. They want to forward DNS queries for a specific domain (example.corp) to an on-premises DNS server. Which Cloud DNS feature should they use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Outbound DNS forwarding (conditional forwarding)
Outbound DNS forwarding with conditional forwarding allows Cloud DNS to forward queries for a specific domain (example.corp) to an on-premises DNS server. This is the correct feature because it selectively routes DNS traffic based on the domain name, enabling resolution of private on-premises names from Google Cloud VMs without exposing the entire VPC network.
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.
- ✗
Private DNS zones
Why it's wrong here
Private zones are for DNS resolution within GCP.
- ✗
DNS peering
Why it's wrong here
Peering is for sharing DNS between networks.
- ✗
Inbound DNS policy
Why it's wrong here
Inbound policy is for forwarding from on-premises to GCP.
- ✓
Outbound DNS forwarding (conditional forwarding)
Why this is correct
This is the feature for forwarding specific domains to on-premises DNS.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between inbound and outbound DNS policies. Candidates may confuse the direction of DNS traffic and select Inbound DNS policy (Option C) instead of Outbound DNS forwarding.
Detailed technical explanation
How to think about this question
Outbound DNS forwarding uses a DNS forwarding zone configured with a target name server (the on-premises DNS server's IP) and a list of domains to forward. Under the hood, Cloud DNS sends standard DNS queries (RFC 1035) to the specified target, and the response is cached per the TTL. In a real-world scenario, this is critical for hybrid environments where VMs need to resolve internal corporate domains like 'example.corp' without running a full DNS proxy.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this PCNE question test?
Implementing Hybrid Interconnectivity — This question tests Implementing Hybrid Interconnectivity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Outbound DNS forwarding (conditional forwarding) — Outbound DNS forwarding with conditional forwarding allows Cloud DNS to forward queries for a specific domain (example.corp) to an on-premises DNS server. This is the correct feature because it selectively routes DNS traffic based on the domain name, enabling resolution of private on-premises names from Google Cloud VMs without exposing the entire VPC network.
What should I do if I get this PCNE 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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Last reviewed: Jul 4, 2026
This PCNE practice question is part of Courseiva's free Google Cloud 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 PCNE exam.
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