1. Which of the following steps is not a valid step for using anti-DDOS pro?

A) configure to be protected domain name
B) change source IP
C) add new DNS record
D) if original server is using its own firewall, then need to add Anti-DDOS pro IP to its white list
E) bind real customer identity to anti-DDOS pro IP


2. Anti-DDOS basic is provided by Alibaba Cloud for free. Which of the following statements about this service are NOT true?(Select 2answers)

A) basic anti-DDOS service can detect attack traffic and migrate them automatically
B) no protection upper limit to the rate of attack traffic
C) CC attack protection need to be turned on manually
D) basic anti-DDOS service can protect any server connect to internet



3. Which version of WAF will provide advisor customized protection rule?

A) Ultimate Version
B) Standard Version
C) Enterprise Version
D) Advanced Version



4. Which of the following statements about ECS, VPC, security groups are NOT true? (the number of correct answers: 2)(Select 2answers)

A) default security group rule is safe enough, please don't change it too much
B) by default, ECS in different security group can communicate with each other
C) rule setting for security group supports both in and out direction configuration
D) one ECS can be in several different security group



5. Which of the following service may under anti-DDOS attack? (the number of correct answers: 3)(Select 3answers)

A) any device internet reachable
B) public DNS service
C) servers in VPC only configured with private network
D) offline servers
E) government website