Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company runs a web application on Amazon EC2 instances. The application logs are sent to Amazon CloudWatch Logs. The SysOps administrator needs to monitor the logs for an increasing number of HTTP 500 errors. The administrator wants to create a metric filter that will count the number of lines containing 'HTTP 500' in the log group. Which syntax should the administrator use for the metric filter pattern?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
[error, HTTP, 500]
Square brackets are used for space-delimited patterns, but 'error' and 'HTTP 500' are not fields separated by spaces; this pattern would try to match fields named 'error', 'HTTP', and '500'.
B
Best answer
"HTTP 500"
This is the correct syntax for matching the exact string 'HTTP 500' anywhere in the log line.
C
Distractor review
"HTTP" && "500"
The && operator is not supported in CloudWatch Logs metric filter patterns. You can use space-separated terms, but quotes around each term will treat them as separate strings to match.
D
Distractor review
[HTTP, 500, ...]
This square bracket syntax would treat 'HTTP' and '500' as fields, and the ellipsis is not valid. It does not match a literal string.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Related practice questions
Related SOA-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A company uses Amazon CloudFront to deliver content to a global audience. The origin is an Application Load Balancer in us-east-1. The SysOps administrator wants to reduce costs by minimizing the number of requests that reach the origin server. Which action should the administrator take?
Question 2
A company runs a batch processing application on Amazon EC2 that runs for 2 hours every night. The workload can tolerate interruptions. Which EC2 purchasing option provides the lowest cost for this use case?
Question 3
A SysOps administrator needs to monitor the CPU utilization of an Amazon RDS DB instance and receive an alarm when CPU utilization exceeds 80% for 5 consecutive minutes. Which AWS service should be used to create this alarm?
Question 4
A company runs a critical web application on Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer (ALB). The application uses session stickiness (sticky sessions) to maintain user sessions. The SysOps administrator notices that when instances are replaced during a scale-in or failure event, users lose their session data. The administrator needs to preserve session data across instance failures without losing stickiness benefits. What should the administrator do?
Question 5
A company runs a production web application on a single Amazon EC2 instance. The application experiences a predictable and steady workload 24/7. The SysOps administrator wants to minimize compute costs for this instance while ensuring it remains available during the expected workload. Which EC2 purchasing option should the administrator use?
Question 6
A company has a VPC with public and private subnets. The private subnets host application servers that need to make outbound HTTPS connections to the internet. The SysOps administrator must implement a solution that provides outbound internet connectivity while preventing inbound connections from the internet. Additionally, the solution must allow the company to control which domains the application servers can access. Which solution should the administrator implement?
FAQ
Questions learners often ask
What does this SOA-C02 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: "HTTP 500" — CloudWatch Logs metric filter patterns are either space-delimited or JSON-based. For a literal string match, you enclose the pattern in quotes. The pattern "HTTP 500" will match any log line that contains the exact string 'HTTP 500'. Option A is incorrect because square brackets are used for space-delimited patterns where each term is a field; here the pattern is not space-delimited fields. Option C is incorrect; the && operator is not used in CloudWatch Logs filter patterns; you can use multiple terms separated by spaces with quotes for exact phrases. Option D is incorrect; the square bracket syntax expects a list of fields and wildcards, not a specific string.
What should I do if I get this SOA-C02 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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