The most significant risk in network architecture is direct SQL authentication from the application server to the database. This configuration violates the principle of least privilege because it embeds database credentials directly in the application server’s code or configuration, meaning that if the application server is compromised, an attacker gains unfettered access to the entire database without any additional authentication layer. On the CISM exam, this scenario tests your understanding of secure architecture design and common attack vectors, often appearing as a trap where candidates confuse strong encryption (like TLS 1.3) or network segmentation (like VPNs and jump hosts) with database access controls. Remember that encryption protects data in transit, not the credentials themselves, and separating zones does not eliminate the risk of a single point of compromise. Memory tip: “Direct auth is a direct breach”—if the app server falls, the database falls with it.
CISM Information Security Risk Management Practice Question
This CISM practice question tests your understanding of information security risk management. 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.
Exhibit
Refer to the exhibit.
Network Architecture Description:
- Internet facing web server (DMZ)
- Application server (internal trust zone)
- Database server (restricted zone)
- All zones separated by firewalls
- Admin access to database server requires VPN + jump host
- All traffic from web server to application server encrypted with TLS 1.3
- Application server has direct access to database using SQL authentication
Which of the following is the most significant risk in this architecture?
Refer to the exhibit.
Network Architecture Description:
- Internet facing web server (DMZ)
- Application server (internal trust zone)
- Database server (restricted zone)
- All zones separated by firewalls
- Admin access to database server requires VPN + jump host
- All traffic from web server to application server encrypted with TLS 1.3
- Application server has direct access to database using SQL authentication
A
Segmentation of network zones
Why wrong: Segmentation is a control.
B
Admin access via VPN and jump host
Why wrong: This is a good security control.
C
Use of TLS 1.3 for encryption
Why wrong: TLS 1.3 is secure.
D
Direct SQL authentication from application server to database
If app server is compromised, database can be accessed directly.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Direct SQL authentication from application server to database
Option D is correct because direct SQL authentication from application server to database bypasses the principle of least privilege and can be exploited if the application server is compromised. Option A is wrong because TLS 1.3 is strong encryption. Option B is wrong because separating zones is good practice. Option C is wrong because VPN + jump host is a security measure.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
Direct SQL authentication from application server to database
Why this is correct
If app server is compromised, database can be accessed directly.
Related concept
Authentication checks who the user is.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related CISM questions on access control and AAA configuration.
Information Security Risk Management — This question tests Information Security Risk Management — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Direct SQL authentication from application server to database — Option D is correct because direct SQL authentication from application server to database bypasses the principle of least privilege and can be exploited if the application server is compromised. Option A is wrong because TLS 1.3 is strong encryption. Option B is wrong because separating zones is good practice. Option C is wrong because VPN + jump host is a security measure.
What should I do if I get this CISM question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related CISM questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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Question Discussion
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