A customer built his website on Alibaba Cloud- To defend against Web attacks he activated Alibaba Cloud WAF However, a week later, the customer finds that his website has suffered intrusion. Which of the following actions should he take to ensure that WAF functions correctly and enhance system security? (Number of correct answers: 4)

Use Security Center to remove Trojans and fix vulnerabilities

Secure other HTTP services on the ECS instance using WAF

Configure a security group for the ECS instance.

Check whether or not the DNS resolution results point to the WAF address

Delete all snapshots and clear the server

Resolve the website domain name to the site s source IP address

Which of the following features are available in Alibaba Cloud Anti-DDoS Premium product? (Number of correct answers: 3)

Web application layer DDoS protection

Transport layer DDoS protection

To improve ECS instance security, the administrator does not want users on public network to check whether an ECS instance is online using the ping command. Which of the following reinforcement measures designed by the administrator is NOT feasible?

Resolve the IP address of the ECS instance to an uncommon level 4 domain name, and point the promotional domain name to the level 4 domain name through CNAME

Enable a security group and only allow access from ports 80 and 25 of the public network through TCP

Enable a security group, and reject ICMP for public network access.

Enable an operating system firewall for the ECS instance, and reject ICMP for public network access.

Content Moderation service is useful m a wide variety of scenarios. Which of the following are the *most* suited to Content Moderation's capabilities? (Number of correct answers 2)

Deleting porn on a social networking site

Detecting spam posts on a forum

Detecting sensitive customer information such as credit card numbers in uploaded images

Free Alibaba ACP-Sec1 Exam Practice Questions & Explanations

Last updated on: Oct 27, 2026
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