- A
dst_ip
Correct. dst_ip filters by the destination IP address, directly targeting traffic to the malicious IP.
- B
src_port
Why wrong: Incorrect. src_port is not used to filter traffic to a specific destination IP; it relates to the source port of the traffic.
- C
bytes_sent
Why wrong: Incorrect. bytes_sent is a metric that indicates the number of bytes sent, not a field for filtering traffic to an IP address.
- D
src_ip
Correct. src_ip identifies the source IP addresses sending traffic to the malicious IP, useful for analysis.
- E
protocol
Correct. protocol filters traffic by protocol type (e.g., TCP, UDP), allowing more focused analysis.
Question 47 of 1,000
PCNE VPC Flow Logs Practice Question
This PCNE practice question tests your understanding of managing, monitoring, and optimising network operations. 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. A key principle to apply: vPC Flow Logs. 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 uses VPC Flow Logs exported to BigQuery for security analysis. They need to identify traffic to a known malicious IP. Which THREE fields can be used in a BigQuery query to filter this traffic? (Choose THREE.)
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
✓
dst_ip
VPC Flow Logs contain fields such as src_ip, dst_ip, protocol, src_port, dst_port, and others. To filter traffic destined for a known malicious IP, the dst_ip field is the primary filter. The src_ip field can identify which source IPs are initiating traffic to that destination, and the protocol field narrows down the traffic type (e.g., TCP, UDP). Therefore, all three fields can be used in a BigQuery WHERE clause to filter the relevant traffic.
Key principle: VPC Flow Logs
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
dst_ip
Why this is correct
Correct. dst_ip filters by the destination IP address, directly targeting traffic to the malicious IP.
Related concept
VPC Flow Logs
- ✗
src_port
Why it's wrong here
Incorrect. src_port is not used to filter traffic to a specific destination IP; it relates to the source port of the traffic.
- ✗
bytes_sent
Why it's wrong here
Incorrect. bytes_sent is a metric that indicates the number of bytes sent, not a field for filtering traffic to an IP address.
- ✓
src_ip
Why this is correct
Correct. src_ip identifies the source IP addresses sending traffic to the malicious IP, useful for analysis.
Related concept
VPC Flow Logs
- ✓
protocol
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
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- VPC Flow Logs
- BigQuery Querying
- dst_ip
- src_ip and protocol
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
VPC Flow Logs
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
What to study next
Got this wrong? Here's your next step.
Review vPC Flow Logs, then practise related PCNE questions on the same topic to reinforce the concept.
- →
Managing, Monitoring, and Optimising Network Operations — study guide chapter
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FAQ
Questions learners often ask
What does this PCNE question test?
Managing, Monitoring, and Optimising Network Operations — This question tests Managing, Monitoring, and Optimising Network Operations — VPC Flow Logs.
What is the correct answer to this question?
The correct answer is: dst_ip — VPC Flow Logs contain fields such as src_ip, dst_ip, protocol, src_port, dst_port, and others. To filter traffic destined for a known malicious IP, the dst_ip field is the primary filter. The src_ip field can identify which source IPs are initiating traffic to that destination, and the protocol field narrows down the traffic type (e.g., TCP, UDP). Therefore, all three fields can be used in a BigQuery WHERE clause to filter the relevant traffic.
What should I do if I get this PCNE question wrong?
Review vPC Flow Logs, then practise related PCNE questions on the same topic to reinforce the concept.
What is the key concept behind this question?
VPC Flow Logs
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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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