Alibaba Cloud ACP-Cloud1 Value Pack (Frequently Bought Together)

A popular worldwide forum stores static resources in OSS and accelerates access using CON Users find that the speed of downloading files from the forum has been greatly improved, but uploading files is slow due to the long data transmission distance, resulting in a bad access experience In order to improve the speed of uploading files for users in this forum, so that users in different regions can have a good access experience, we recommend that the forum can________.

• A. Enable OSS static website hosting
• B. Enable the transmission acceleration service for O: Enable OSS
• C. Activate OSS in different regions as file storage, and synchronize data between OSS in different regions through cross-region replication
• D. Activate the PCDN service

Auto Scaling often works in conjunction with SLB, where scaling groups and SLB must be in the same region.

• A. TRUE
• B. FALSE

When distributing loads to multiple ECS instances with an Alibaba Cloud Server Load Balancer (SLB), you can obtain the real IP addresses of users who initiate the requests through _____________. (Choose two.)

• A. For Layer-4 services, you can obtain the visitors' real IP addresses directly, without any additional settings.
• B. For Layer-7 services, SLB obtains the real IP addresses of the visitors by means of HTTP Header: X- Forwarded-For, but the "Obtain the Visitors Real IP Address" function must be enabled first.
• C. For Layer-4 services, SLB obtains the real IP addresses of the visitors by means of the HTTP Header:
  X-Forwarded-For, but the "Obtain the Visitors Real IP Address" function must be enabled first.
• D. For Layer-7 services, you can obtain the visitors' real IP addresses directly, without any additional settings.

In Auto Scaling, the cool-down time of a scaling group refers to the lockout period after a scaling activity has been executed successfully. Which of the following statements about cool-down time are true? (Choose two.)

• A. You can't skip a scaling group's cool-down time period right after a scaling activity is just finished.
• B. During the cool-down time of a scaling group, only the alarms from CloudMonitor can bypass the cool- down time and trigger scaling activities, whereas other scaling activities, such as manually triggered ones, will still be subject to the cool-down time.
• C. When multiple ECS instances are added or removed from a scaling group, the cool-down time begins only when the last instance has been added or removed from the scaling group.
• D. During the cool-down time, only the scaling activities in the same scaling group are locked.

Many websites have suffered DDoS attacks of different volumes. Therefore, accurate understanding of DDoS attacks is critical to website security protection. Which of the following statements about DDoS attacks is the MOST accurate?

• A. The purpose of a DDoS attack is to steal confidential information.
• B. DDoS attacks primarily target databases.
• C. A DDoS attacks crack the server's logon password by means of a massive number of attempts.
• D. The main purpose of a DDoS attack is to prevent the target server from providing normal services.
  Currently, the DDoS attack is one of the strongest and most indefensible website attacks.