Alibaba Exam ACP-Sec1 Topic 6 Question 31 Discussion

Actual exam question for Alibaba's ACP-Sec1 exam

Question #: 31
Topic #: 6

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?

AResolve 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

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

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

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

Show Suggested Answer

Suggested Answer: A

by Eun at May 06, 2022, 01:52 AM

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