A small enterprise is rebuilding its public customer portal. The web front end must be reachable from the internet, the application tier should never be directly exposed, and the database must remain private even if the web server is compromised. Which two design changes best meet those goals? Select two.
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.
Best answer
Place the web front end in a DMZ behind a firewall rule allowing only HTTPS from the internet.
A DMZ is the correct place for the internet-facing web front end because it limits exposure if the server is attacked. Allowing only HTTPS from the internet reduces unnecessary access and supports a tight inbound filtering strategy. This choice fits a common secure web architecture pattern and keeps the higher-value internal systems separate from direct public reach.
Distractor review
Put the database on the same subnet as the web front end so internal calls have lower latency.
Putting the database on the same subnet increases blast radius and exposes sensitive data to a broader set of compromises. Lower latency is not a security justification when the design goal is isolation. The database should remain in a separate internal zone with tightly controlled access, not share the same network segment as the public-facing server.
Best answer
Place the application tier on an internal subnet and allow only the web front end to reach it on the app port.
Keeping the application tier on an internal subnet creates a protective boundary between public and internal components. Limiting access so only the web front end can reach the app port reduces attack paths and enforces segmentation. This design supports defense in depth because each tier can only communicate with the layer that truly needs it.
Distractor review
Allow the database to accept connections from the internet if strong passwords are used.
Direct internet exposure of a database is a poor design choice even when passwords are strong. Passwords alone do not prevent scanning, exploit attempts, or credential stuffing against the service. The database should be isolated behind internal controls and reachable only from approved application components, not from external networks.
Distractor review
Disable all inbound filtering on the DMZ so troubleshooting is simpler.
Removing inbound filtering defeats the purpose of a DMZ and greatly increases risk. Troubleshooting convenience is not a valid reason to expose services broadly. A secure design keeps only the necessary ports open and uses logging, documentation, and controlled rules to support administration without weakening security boundaries.
Common exam trap
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Technical deep dive
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
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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 laptop is suspected of being used in a malware incident. It is still powered on and connected to Wi-Fi. What should the responder do before shutting it down?
Question 2
An employee reports a ransomware note on a file server. The server is still powered on, shares are still being accessed, and management wants service restored as quickly as possible. What should the incident response team do first?
Question 3
An employee reports a ransomware note on a finance laptop. The laptop is still powered on, connected to Wi-Fi, and the user says they were just working in a spreadsheet. Management wants the fastest safe response that also preserves evidence. What should the responder do first?
Question 4
You are handed a company laptop suspected in an insider theft case. Legal says the evidence may be needed in court. Which action best preserves admissibility?
Question 5
A developer wants to reduce the risk of SQL injection in a new customer search form. Which two changes are the best mitigations? Select two.
Question 6
A branch office uses a flat LAN, and a compromise on one user workstation could spread quickly to finance systems. Management wants finance workstations isolated from general users, but finance staff still need access to a central finance application and network printer. What is the best design change?
FAQ
Questions learners often ask
What does this SY0-701 question test?
CIDR notation defines the prefix length.
What is the correct answer to this question?
The correct answer is: Place the web front end in a DMZ behind a firewall rule allowing only HTTPS from the internet. — The best choices are A and C. The web front end belongs in a DMZ because it is the only tier that should face the internet, and firewall rules should restrict exposure to the minimum needed service. The application tier should stay on an internal subnet and accept traffic only from the web layer. Together, these controls reduce attack surface and prevent a compromise of one tier from immediately exposing the database or internal services. Why others are wrong: B weakens segmentation by placing sensitive data too close to the exposed tier. D relies on passwords alone and leaves the database directly reachable from the internet, which is unacceptable. E removes the filtering that makes the DMZ useful in the first place and would create unnecessary risk rather than reducing it.
What should I do if I get this SY0-701 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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