The best answer is C. WAF.
XSS (Cross-Site Scripting) is a web application attack that injects malicious scripts into web content. A WAF (Web Application Firewall) is specifically designed to inspect, filter, and block malicious HTTP and HTTPS traffic targeting web applications. It can help detect and prevent common attacks such as XSS, SQL injection, and other application-layer threats.
Why the other options are incorrect:
A. NGFWA next-generation firewall provides advanced network security features, but it is not as specifically focused on web application attacks as a WAF.
B. UTMUnified Threat Management combines multiple security features in one platform, but it is not the best answer for preventing a web application attack like XSS.
D. NACNetwork Access Control focuses on controlling which devices can connect to the network. It does not directly prevent XSS.
From the SY0-701 perspective, attacks against web applications are best mitigated by controls specifically designed for application-layer inspection, making WAF the correct answer.
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