Question 417 of 997

Operations and Support →mediumMultiple SelectObjective-mapped

CV0-004 Operations and Support Practice Question

This CV0-004 practice question tests your understanding of operations and support. 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 cloud engineer is troubleshooting a network connectivity issue between two subnets in a VPC. The engineer wants to capture and analyze traffic metadata to identify dropped packets. Which TWO tools can provide this information? (Select TWO.)

A
AWS X-Ray
Why wrong: X-Ray traces application requests, not raw network traffic.
B
Amazon CloudWatch Logs
Why wrong: CloudWatch Logs stores logs but does not capture network traffic by itself.
C
AWS Network Firewall logs
Network Firewall logs provide detailed information about traffic that matches firewall rules, including dropped packets.
D
AWS CloudTrail
Why wrong: CloudTrail records API activity, not network traffic.
E
VPC Flow Logs
VPC Flow Logs capture network traffic metadata, including allowed/denied packets.

Full breakdown with real-world context →

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

✓

AWS Network Firewall logs

VPC Flow Logs capture metadata about IP traffic going to and from network interfaces. AWS X-Ray provides distributed tracing but for application-level requests, not raw network traffic. AWS CloudTrail logs API calls, not traffic.

Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
AWS X-Ray
Why it's wrong here
X-Ray traces application requests, not raw network traffic.
✗
Amazon CloudWatch Logs
Why it's wrong here
CloudWatch Logs stores logs but does not capture network traffic by itself.
✓
AWS Network Firewall logs
Why this is correct
Network Firewall logs provide detailed information about traffic that matches firewall rules, including dropped packets.
Related concept
CIDR notation defines the prefix length.
✗
AWS CloudTrail
Why it's wrong here
CloudTrail records API activity, not network traffic.
✓
VPC Flow Logs
Why this is correct
VPC Flow Logs capture network traffic metadata, including allowed/denied packets.
Related concept
CIDR notation defines the prefix length.

Common exam traps

Common exam trap: usable hosts are not the same as total addresses

Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.

Detailed technical explanation

How to think about this question

Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.

KKey Concepts to Remember

CIDR notation defines the prefix length.
Block size helps identify subnet boundaries.
Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
The required host count determines the smallest suitable subnet.

TExam Day Tips

Write the block size before choosing the subnet.
Check whether the question asks for hosts, subnets or a specific address range.
Do not confuse /24, /25, /26 and /27 host counts.

Key takeaway

Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.

Real-world example

How this comes up in practice

A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.

Visual reference

What to study next

Got this wrong? Here's your next step.

Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related CV0-004 subnetting questions on CIDR, address ranges, and subnet selection.

Related CV0-004 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Cloud Architecture and Design practice questions

Practise CV0-004 questions linked to Cloud Architecture and Design.

Deployment practice questions

Practise CV0-004 questions linked to Deployment.

Security practice questions

Practise CV0-004 questions linked to Security.

Operations and Support practice questions

Practise CV0-004 questions linked to Operations and Support.

Troubleshooting practice questions

Practise CV0-004 questions linked to Troubleshooting.

CV0-004 fundamentals practice questions

Practise CV0-004 questions linked to CV0-004 fundamentals.

CV0-004 scenario practice questions

Practise CV0-004 questions linked to CV0-004 scenario.

CV0-004 troubleshooting practice questions

Practise CV0-004 questions linked to CV0-004 troubleshooting.

Practice this exam

Start a free CV0-004 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

CV0-004 practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this CV0-004 question test?

Operations and Support — This question tests Operations and Support — CIDR notation defines the prefix length..

What is the correct answer to this question?

The correct answer is: AWS Network Firewall logs — VPC Flow Logs capture metadata about IP traffic going to and from network interfaces. AWS X-Ray provides distributed tracing but for application-level requests, not raw network traffic. AWS CloudTrail logs API calls, not traffic.

What should I do if I get this CV0-004 question wrong?

What is the key concept behind this question?

CIDR notation defines the prefix length.

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 →

How Courseiva writes practice questions · Editorial policy

Last reviewed: Jul 4, 2026

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.

Loading comments…

This CV0-004 practice question is part of Courseiva's free CompTIA 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 CV0-004 exam.