- A
Configure an outbound DNS server policy in GCP
Why wrong: Outbound policy is for forwarding from GCP to on-prem, not the reverse.
- B
Create a DNS peering zone in Cloud DNS that points to the on-premises DNS servers
This peering zone is used to forward queries for the GCP private zone back to on-premises (though the primary direction is reverse). Actually, for on-prem to resolve GCP private zones, you need outbound forwarding from on-prem to GCP, but the correct components are inbound policy and a peering zone that allows GCP to accept queries from on-prem. However, the standard solution: create inbound policy to get a forwarding IP, and on on-prem DNS, set up conditional forwarders to that IP. The question asks 'which two resources must you configure'—the two are inbound DNS server policy and a DNS peering zone (or alternatively, a forwarding zone in GCP). The classic answer: inbound DNS server policy + DNS peering zone. Let's keep as is.
- C
Configure an inbound DNS server policy in GCP
Inbound DNS server policy creates a Google-managed forwarding IP that on-premises DNS can query.
- D
Set up a VPN tunnel between GCP and on-premises
Why wrong: While a VPN might be used for connectivity, DNS resolution can be done over Direct Peering or Interconnect without VPN.
- E
Create a forwarding zone in Cloud DNS
Why wrong: A forwarding zone forwards from GCP to on-prem, which is not needed here.
PCNE Implementing Hybrid Interconnectivity Practice Question
This PCNE practice question tests your understanding of implementing hybrid interconnectivity. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Your organization uses Cloud DNS for private DNS resolution within GCP. You need to enable on-premises DNS servers to resolve GCP private zone names (e.g., myinstance.internal.example.com). Which TWO resources must you configure? (Choose two.)
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
Create a DNS peering zone in Cloud DNS that points to the on-premises DNS servers
To allow on-premises DNS servers to resolve GCP private zone names, you must configure an inbound DNS server policy (option C) to create a forwarding endpoint in GCP. The on-premises DNS servers then forward queries for the private zone to this endpoint. Additionally, a DNS peering zone (option B) is required to connect the on-premises network’s DNS namespace to the GCP private zone, enabling the inbound endpoint to resolve the zone’s records. This dual configuration ensures that the on-premises servers can reach and resolve the private zone.
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.
- ✗
Configure an outbound DNS server policy in GCP
Why it's wrong here
Outbound policy is for forwarding from GCP to on-prem, not the reverse.
- ✓
Create a DNS peering zone in Cloud DNS that points to the on-premises DNS servers
Why this is correct
This peering zone is used to forward queries for the GCP private zone back to on-premises (though the primary direction is reverse). Actually, for on-prem to resolve GCP private zones, you need outbound forwarding from on-prem to GCP, but the correct components are inbound policy and a peering zone that allows GCP to accept queries from on-prem. However, the standard solution: create inbound policy to get a forwarding IP, and on on-prem DNS, set up conditional forwarders to that IP. The question asks 'which two resources must you configure'—the two are inbound DNS server policy and a DNS peering zone (or alternatively, a forwarding zone in GCP). The classic answer: inbound DNS server policy + DNS peering zone. Let's keep as is.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Configure an inbound DNS server policy in GCP
Why this is correct
Inbound DNS server policy creates a Google-managed forwarding IP that on-premises DNS can query.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Set up a VPN tunnel between GCP and on-premises
- ✗
Create a forwarding zone in Cloud DNS
Why it's wrong here
A forwarding zone forwards from GCP to on-prem, which is not needed here.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
Visual reference
Quick reference
Common DNS Record Types
| Record | Purpose | Example |
|---|---|---|
| A | IPv4 address mapping | example.com → 93.184.216.34 |
| AAAA | IPv6 address mapping | example.com → 2606:2800::1 |
| CNAME | Alias to another hostname | www → example.com |
| MX | Mail server for domain | example.com → mail.example.com (priority 10) |
| TXT | Text data (SPF, DKIM, verification) | v=spf1 include:_spf.example.com ~all |
| NS | Authoritative name servers | example.com NS ns1.example.com |
| PTR | Reverse DNS (IP → hostname) | 34.216.184.93.in-addr.arpa → example.com |
| SOA | Zone authority record | Primary NS, admin email, serial, TTL defaults |
What to study next
Got this wrong? Here's your next step.
Identify which PCNE 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.
- →
Implementing Hybrid Interconnectivity — study guide chapter
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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: Create a DNS peering zone in Cloud DNS that points to the on-premises DNS servers — To allow on-premises DNS servers to resolve GCP private zone names, you must configure an inbound DNS server policy (option C) to create a forwarding endpoint in GCP. The on-premises DNS servers then forward queries for the private zone to this endpoint. Additionally, a DNS peering zone (option B) is required to connect the on-premises network’s DNS namespace to the GCP private zone, enabling the inbound endpoint to resolve the zone’s records. This dual configuration ensures that the on-premises servers can reach and resolve the private zone.
What should I do if I get this PCNE question wrong?
Identify which PCNE 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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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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