The correct choice is to place the web server in a DMZ and the database server on the internal network, with a firewall blocking outbound traffic from the DMZ to internal. This architecture prevents pivoting by enforcing a default-deny rule on traffic leaving the DMZ, so even if an attacker compromises the web server, they cannot initiate a connection to the internal database server—breaking the lateral movement chain. On the Cisco CyberOps Associate 200-201 exam, this scenario tests your understanding of DMZ network segmentation and how it isolates publicly accessible services from sensitive internal resources; a common trap is assuming that a firewall only needs to block inbound traffic, when the pivot threat relies on outbound DMZ-to-internal connections. Remember the memory tip: “DMZ is a one-way street—inbound allowed, outbound denied to internal.”
200-201 Security Concepts Practice Question
This 200-201 practice question tests your understanding of security concepts. 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 security engineer is designing a network to prevent an attacker who gains access to a web server from easily pivoting to the internal database server. Which architecture best achieves this goal?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Place the web server in a DMZ and the database server on the internal network, with a firewall blocking outbound traffic from DMZ to internal
Placing the web server in a DMZ and the database server on the internal network, with a firewall blocking outbound traffic from the DMZ to internal, prevents an attacker who compromises the web server from initiating connections to the internal database server. This implements a default-deny rule for DMZ-to-internal traffic, forcing all database access to be initiated from the internal network only, which breaks the pivot chain. The DMZ acts as a buffer zone, isolating publicly accessible services from sensitive internal resources.
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.
✗
Place both servers on the internal network with host-based firewalls
Why it's wrong here
Host firewalls can be bypassed if the attacker gains admin privileges.
✓
Place the web server in a DMZ and the database server on the internal network, with a firewall blocking outbound traffic from DMZ to internal
Why this is correct
DMZ isolates web server; blocking outbound from DMZ prevents pivot.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use a VPN between the web server and database server
Why it's wrong here
VPN adds encryption but does not prevent pivoting if the web server is compromised.
✗
Place both servers on the same VLAN with a firewall between them
Why it's wrong here
Same VLAN reduces segmentation; firewall alone may not block all lateral movement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that host-based firewalls or VLANs alone provide sufficient segmentation, when in fact network-level DMZ isolation with explicit direction-based firewall rules is required to prevent lateral movement after a perimeter breach.
Detailed technical explanation
How to think about this question
In a typical DMZ architecture, the firewall enforces stateful inspection and access control lists (ACLs) that permit only inbound HTTP/HTTPS traffic (TCP/80, TCP/443) to the web server from the internet, while blocking all outbound traffic from the DMZ to the internal network unless explicitly allowed (e.g., for database queries initiated from internal apps). The database server should only accept connections from the internal network, often using a separate firewall rule set or a bastion host. Real-world implementations often use a three-legged firewall or a pair of firewalls (front-end and back-end) to enforce this isolation, preventing an attacker from using the web server as a jump host.
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 help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
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.
Security Concepts — This question tests Security Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Place the web server in a DMZ and the database server on the internal network, with a firewall blocking outbound traffic from DMZ to internal — Placing the web server in a DMZ and the database server on the internal network, with a firewall blocking outbound traffic from the DMZ to internal, prevents an attacker who compromises the web server from initiating connections to the internal database server. This implements a default-deny rule for DMZ-to-internal traffic, forcing all database access to be initiated from the internal network only, which breaks the pivot chain. The DMZ acts as a buffer zone, isolating publicly accessible services from sensitive internal resources.
What should I do if I get this 200-201 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: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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