The answer is that the SQL Server service is down. An HTTP 500 error signals a generic server-side failure, and when the web server can successfully ping the database server, the network layer is intact, isolating the problem to the application’s backend dependencies. Since the web application relies on SQL Server to process queries, a stopped database service prevents query execution, causing the 500 error. On the Systems Security Certified Practitioner SSCP exam, this scenario tests your ability to differentiate between network connectivity issues and service-level failures—a common trap is assuming a successful ping means the application should work, but ping only confirms ICMP reachability, not that critical services like SQL Server are running. Remember the memory tip: “Ping is fine, service is down—500 means the app can’t talk to the database.”
SSCP Incident Response and Recovery Practice Question
This SSCP practice question tests your understanding of incident response and recovery. 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.
Exhibit
Refer to the exhibit.
```
[2024-01-15 14:32:05] [ERROR] [host=web01] Failed to connect to SQL server at 10.0.1.50:1433: Connection refused
[2024-01-15 14:32:10] [WARNING] [host=web01] Application pool "AppPool1" has been recycled due to memory limit
[2024-01-15 14:32:15] [ERROR] [host=db01] Disk I/O write latency exceeded threshold: 2000ms
```
Based on the exhibit, what is the most likely cause of the web application outage?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Refer to the exhibit.
```
[2024-01-15 14:32:05] [ERROR] [host=web01] Failed to connect to SQL server at 10.0.1.50:1433: Connection refused
[2024-01-15 14:32:10] [WARNING] [host=web01] Application pool "AppPool1" has been recycled due to memory limit
[2024-01-15 14:32:15] [ERROR] [host=db01] Disk I/O write latency exceeded threshold: 2000ms
```
A
Network connectivity issue between web and DB
Why wrong: A network issue would typically show 'timeout' rather than 'Connection refused'.
B
Application pool memory leak
Why wrong: The warning about application pool recycling is a separate issue and occurred after the SQL connection failure.
C
SQL Server service is down
The 'Connection refused' error on port 1433 indicates the SQL Server is not listening or is down.
D
Database server disk failure
Why wrong: The disk I/O latency on db01 is concerning but not the immediate cause of the web app outage.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SQL Server service is down
The exhibit shows that the web application is returning HTTP 500 errors, which typically indicate a server-side issue. Since the web server can connect to the database server (as shown by the successful ping), but the application fails, the most likely cause is that the SQL Server service is down, preventing the application from executing queries. This aligns with the correct answer C.
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.
✗
Network connectivity issue between web and DB
Why it's wrong here
A network issue would typically show 'timeout' rather than 'Connection refused'.
✗
Application pool memory leak
Why it's wrong here
The warning about application pool recycling is a separate issue and occurred after the SQL connection failure.
✓
SQL Server service is down
Why this is correct
The 'Connection refused' error on port 1433 indicates the SQL Server is not listening or is down.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Database server disk failure
Why it's wrong here
The disk I/O latency on db01 is concerning but not the immediate cause of the web app outage.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume a successful ping implies full database availability, but ping only tests network layer connectivity, not the application layer service (SQL Server).
Trap categories for this question
Command / output trap
A network issue would typically show 'timeout' rather than 'Connection refused'.
Detailed technical explanation
How to think about this question
When SQL Server service is stopped, the web application's connection pool will fail to establish new connections, resulting in HTTP 500 errors. The web server may still ping the database server because ICMP operates at the network layer, independent of the SQL Server service. In real-world scenarios, administrators should check SQL Server error logs and Windows Event Viewer for service stop events, and verify that the SQL Server service is set to automatic startup.
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 security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
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.
Incident Response and Recovery — This question tests Incident Response and Recovery — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: SQL Server service is down — The exhibit shows that the web application is returning HTTP 500 errors, which typically indicate a server-side issue. Since the web server can connect to the database server (as shown by the successful ping), but the application fails, the most likely cause is that the SQL Server service is down, preventing the application from executing queries. This aligns with the correct answer C.
What should I do if I get this SSCP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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