Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company is placing a customer-facing web application behind a new security control. The team wants to block malicious HTTP requests such as injection attempts before they reach the application server, with minimal code changes to the app itself. Which control is the best fit?
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.
A
Distractor review
Network access control (NAC) at the switch port.
NAC checks device posture and admission to the network, but it does not inspect web requests for application-layer attacks.
B
Best answer
Web application firewall (WAF) in front of the application.
A WAF inspects HTTP traffic and can block common web exploits without requiring changes to the application code.
C
Distractor review
Data loss prevention (DLP) on the email gateway.
DLP is meant to identify and stop sensitive data leakage, not to filter hostile web requests going to a server.
D
Distractor review
Endpoint detection and response (EDR) on the web server only.
EDR helps detect malicious activity on endpoints, but it does not provide inline protection for inbound HTTP request filtering.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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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?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Web application firewall (WAF) in front of the application. — A WAF is the best choice because it sits in front of the web application and examines HTTP or HTTPS traffic for suspicious patterns such as SQL injection, cross-site scripting, and command injection. It can block or challenge malicious requests without requiring major application changes, which is ideal when the organization wants faster risk reduction with minimal disruption. This makes it a strong practical control for web-facing applications under Security+ scenarios. Why others are wrong: NAC controls who can connect to the network, not what web content is allowed through. DLP focuses on data leakage, usually on email, endpoints, or file movement. EDR is useful on the server itself, but it reacts to host behavior rather than filtering inbound application traffic. The question asks for a control that protects the web app before requests reach it, which is exactly the WAF's role.
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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