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Question 164 - Professional Cloud Network Engineer discussion

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Your team is developing an application that will be used by consumers all over the world. Currently, the application sits behind a global external application load balancer You need to protect the application from potential application-level attacks. What should you do?

A.
Enable Cloud CDN on the backend service.
Answers
A.
Enable Cloud CDN on the backend service.
B.
Create multiple firewall deny rules to block malicious users, and apply them to the global external application load balancer
Answers
B.
Create multiple firewall deny rules to block malicious users, and apply them to the global external application load balancer
C.
Create a Google Cloud Armor security policy With web application firewall rules, and apply the security policy to the backend service.
Answers
C.
Create a Google Cloud Armor security policy With web application firewall rules, and apply the security policy to the backend service.
D.
Create a VPC Service Controls perimeter with the global external application load balancer as the protected service, and apply it to the backend service
Answers
D.
Create a VPC Service Controls perimeter with the global external application load balancer as the protected service, and apply it to the backend service
Suggested answer: C

Explanation:

The correct answer is C because it meets the requirement of protecting the application from potential application-level attacks.Google Cloud Armor security policies are sets of rules that match on attributes from Layer 3 to Layer 7 to protect externally facing applications1.Web application firewall (WAF) rules are predefined rules that detect and mitigate common web attacks such as cross-site scripting (XSS), SQL injection, remote file inclusion, and more2. By applying a Google Cloud Armor security policy with WAF rules to the backend service, you can filter out malicious requests before they reach your application.

Option A is incorrect because Cloud CDN is a content delivery network that caches static content at the edge of Google's network, but it does not provide any protection against application-level attacks3.Option B is incorrect because firewall rules are applied at the VPC network level, not at the load balancer level4.Firewall rules also only match on Layer 3 and 4 attributes, not on Layer 7 attributes that are relevant for application-level attacks4. Option D is incorrect because VPC Service Controls perimeter is a feature that helps you secure your data from unauthorized access by users outside your organization, but it does not protect your application from external attacks.

Security policy overview | Google Cloud Armor

Web application firewall (WAF) rules | Google Cloud Armor

Cloud CDN overview | Google Cloud

Using firewall rules | VPC

[VPC Service Controls overview | Google Cloud]

asked 18/09/2024
Vanildo Pedro
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