SOA-C02 Monitoring, Logging, and Remediation Practice Question
This SOA-C02 practice question tests your understanding of monitoring, logging, and remediation. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 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?
Why wrong: 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
"HTTP 500"
This is the correct syntax for matching the exact string 'HTTP 500' anywhere in the log line.
C
"HTTP" && "500"
Why wrong: 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
[HTTP, 500, ...]
Why wrong: This square bracket syntax would treat 'HTTP' and '500' as fields, and the ellipsis is not valid. It does not match a literal string.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
"HTTP 500"
Option B is correct because CloudWatch Logs metric filter patterns use literal string matching by enclosing the exact text in double quotes. The pattern "HTTP 500" will match any log line that contains the exact substring 'HTTP 500', which is the simplest and most reliable way to count occurrences of HTTP 500 errors.
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.
✗
[error, HTTP, 500]
Why it's wrong here
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'.
✓
"HTTP 500"
Why this is correct
This is the correct syntax for matching the exact string 'HTTP 500' anywhere in the log line.
Related concept
Read the scenario before looking for a memorised answer.
✗
"HTTP" && "500"
Why it's wrong here
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.
✗
[HTTP, 500, ...]
Why it's wrong here
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 traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the space-delimited token pattern syntax (square brackets) with literal string matching, leading them to choose options like A or D that only match specific token positions rather than any occurrence of 'HTTP 500' in the log line.
Detailed technical explanation
How to think about this question
CloudWatch Logs metric filter patterns support two modes: space-delimited token patterns (using square brackets) and literal string patterns (using double quotes). Literal string patterns are case-sensitive and match the exact substring anywhere in the log event. For counting HTTP 500 errors, a literal string pattern is preferred because it avoids false negatives from token ordering or extra whitespace. The metric filter then increments a CloudWatch metric each time the pattern matches, enabling alarms or dashboards.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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.
Monitoring, Logging, and Remediation — This question tests Monitoring, Logging, and Remediation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: "HTTP 500" — Option B is correct because CloudWatch Logs metric filter patterns use literal string matching by enclosing the exact text in double quotes. The pattern "HTTP 500" will match any log line that contains the exact substring 'HTTP 500', which is the simplest and most reliable way to count occurrences of HTTP 500 errors.
What should I do if I get this SOA-C02 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.
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Question Discussion
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