Alibaba Cloud ACA-Sec1 - ACA Cloud Security Associate

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Total 147 questions

Question # 41

A DoS attack that sends a flood of synchronization (SYN) requests and never sends the final

acknowledgement (ACK) is typically known as which of the following?

Smurf

Ping Flood

Fraggle

SYN flood

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?

Change 'Administrator' to some other name

With 'Server Guard' protection in Alibaba Cloud, you can set password to some easy to

remember words.

Except some necessary accounts for system management, disable or delete other useless

accounts

Always set password with highly complex combination of number, letter and other

characters

For MySQL DB, if the records number exceeds one million in one single table, which of the

following methods can help you improve querying speed?(the number of correct answers: 2)

Score 1

setup index for this table

use 'group by' to filter information

use 'count(*)' to get total record number before query

use 'limit N' to limit the number of possible returned records

Which directory is the home directory of root user?

/home/root

/root

/boot