1. Which of the following 4 functions can be achieved through ECS security group configuration?

A) assign customized IP address to ECS
B) allow specific IP to remote access ECS server
C) make ECS server be able to defend 15Gb/s DDOS attack
D) fix XSS vulnerability



2. May, 2017. New blackmail virus WannaCry burst globally. This virus leveraged Windows OS opened port 445 to initiate the attack, so the quickest way to prevent this kind of attack is?

A) With 'Server Guard' protection in Alibaba Cloud, you can set password to some easy to remember words.
B) Change 'Administrator' to some other name
C) Always set password with highly complex combination of number, letter and other characters
D) Except some necessary accounts for system management, disable or delete other useless accounts



3. In RedHat Linux shell which command can be used to check what file system is mounted and from what disk device it was donde?

A) mount
B) ppart
C) fdisk
D) du



4. Which of the following scenarios is the one that 'Server Guard' will support for brute force password hacking detection?

A) Linux CRM application remote logon
B) RDS remote connection
C) Windows shared directory access
D) ECS server remote logon or inside DB remote logon



5. Which of the following statements is NOT true about daily operation on server account and password maintenance?

A) always set a complexed password using combination of numbers,letters and other characters
B) except for some necessary accounts for system management, disable or delete other seldomly used accounts
C) change 'Administrator' to some other name
D) with 'Server Guard' protection In Alibaba Cloud,you can set password to some easy to remember words.