This PCA practice question tests your understanding of manage implementation of cloud architecture. 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.
An organization wants to monitor network traffic between VMs in a VPC for troubleshooting. Which TWO services can provide this?
Cloud Audit Logs
Why wrong: Records admin activity, not network traffic.
Packet Mirroring (Network Intelligence Center)
Provides deep packet inspection.
VPC Flow Logs
Captures network traffic metadata.
Cloud Monitoring
Why wrong: Provides metrics, not traffic details.
Cloud Logging
Why wrong: Stores logs, but not the generation service.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Packet Mirroring (Network Intelligence Center)
Packet Mirroring (Network Intelligence Center) is correct because it clones the actual packet contents (headers and payload) from VM instances and forwards them to a collector for deep packet inspection, enabling detailed troubleshooting of network traffic between VMs in a VPC. This service captures full packet data, including application-layer information, which is essential for diagnosing issues like packet loss, latency, or protocol errors.
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.
Cloud Audit Logs
Why it's wrong here
Records admin activity, not network traffic.
Packet Mirroring (Network Intelligence Center)
Why this is correct
Provides deep packet inspection.
Related concept
Read the scenario before looking for a memorised answer.
VPC Flow Logs
Why this is correct
Captures network traffic metadata.
Related concept
Read the scenario before looking for a memorised answer.
Cloud Monitoring
Why it's wrong here
Provides metrics, not traffic details.
Cloud Logging
Why it's wrong here
Stores logs, but not the generation service.
Common exam traps
Google Cloud often tests the distinction between services that capture raw packet data (Packet Mirroring) versus those that only log metadata or metrics (VPC Flow Logs, Cloud Monitoring), leading candidates to mistakenly choose VPC Flow Logs as the sole correct answer when full packet capture is required for deep troubleshooting.
Detailed technical explanation
Packet Mirroring uses a VPC mirror source (e.g., a VM NIC) and a mirror destination (e.g., an internal load balancer or another VM) to copy all ingress/egress packets at the hypervisor level, ensuring no performance impact on the source VM. It supports filtering by IP ranges, protocols, or port numbers to reduce noise, and the mirrored traffic is encapsulated with a VXLAN header (UDP port 4789) for transport. In a real-world scenario, you could use it to capture a TLS handshake between two VMs to debug a certificate mismatch or retransmission issue.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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FAQ
Manage implementation of cloud architecture — This question tests Manage implementation of cloud architecture — Read the scenario before looking for a memorised answer..
The correct answer is: Packet Mirroring (Network Intelligence Center) — Packet Mirroring (Network Intelligence Center) is correct because it clones the actual packet contents (headers and payload) from VM instances and forwards them to a collector for deep packet inspection, enabling detailed troubleshooting of network traffic between VMs in a VPC. This service captures full packet data, including application-layer information, which is essential for diagnosing issues like packet loss, latency, or protocol errors.
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 30, 2026
This PCA 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 PCA exam.
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