PCNE Implementing hybrid interconnectivity Practice Question
This PCNE practice question tests your understanding of implementing hybrid interconnectivity. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 has a Dedicated Interconnect connection between their on-premises data center and Google Cloud. They are experiencing intermittent connectivity issues on a specific VLAN attachment. The VLAN attachment is configured with a single Cloud Router and BGP sessions are established. Which two steps should they take to troubleshoot the issue? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Verify the BGP session status on the Cloud Router.
Option A is correct because BGP session status on the Cloud Router directly indicates whether the routing protocol is functioning correctly between the on-premises router and Google Cloud. Intermittent connectivity on a VLAN attachment often stems from BGP flapping or session drops, which can be verified by checking the BGP state (e.g., Established, Idle, or Active) and associated error counters in the Google Cloud Console or via gcloud commands.
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.
✓
Verify the BGP session status on the Cloud Router.
Why this is correct
Correct. BGP session flapping can cause intermittent connectivity.
Related concept
Read the scenario before looking for a memorised answer.
✗
Check the MTU configuration on the on-premises router.
Why it's wrong here
MTU mismatch usually causes consistent packet loss, not intermittent issues.
✗
Verify the physical interconnect location and cable connections.
Why it's wrong here
Physical issues are unlikely to affect only one VLAN attachment.
✓
Review the VLAN attachment status in the Google Cloud Console.
Why this is correct
Correct. The VLAN attachment might be in a degraded state.
Related concept
Read the scenario before looking for a memorised answer.
✗
Review the Cloud NAT configuration for the VPC network.
Why it's wrong here
Cloud NAT is used for outbound internet access, not hybrid connectivity.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse physical layer issues (Option C) with logical layer problems, but the question specifies a single VLAN attachment, which points to a logical configuration error rather than a physical interconnect fault.
Detailed technical explanation
How to think about this question
A VLAN attachment on a Dedicated Interconnect uses a 802.1q VLAN tag to separate traffic, and each attachment has its own Cloud Router and BGP sessions. Intermittent connectivity can be caused by BGP keepalive failures due to asymmetric routing, route advertisement issues, or VLAN ID mismatches. Checking the VLAN attachment status in the Google Cloud Console (Option D) reveals whether the attachment is operational (e.g., ACTIVE, PARTNER_ACTIVE) or has errors like VLAN mismatch or insufficient capacity, which can cause intermittent behavior.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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.
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: Verify the BGP session status on the Cloud Router. — Option A is correct because BGP session status on the Cloud Router directly indicates whether the routing protocol is functioning correctly between the on-premises router and Google Cloud. Intermittent connectivity on a VLAN attachment often stems from BGP flapping or session drops, which can be verified by checking the BGP state (e.g., Established, Idle, or Active) and associated error counters in the Google Cloud Console or via gcloud commands.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.