Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. It supports adding existing ECS instances into the scaling group, whose status however must be .

Which of the followings are not the operations that you can do on a cloud disk snapshot? (Choose two.)

Multiple lower-configuration I/O-optimized ECS instances can be used with ___________ to deliver a high- availability architecture.

You can create a custom image for ECS using which of the followings? (Choose two.)

Alibaba Cloud provides anti-DDoS products of different levels. If the service availability needs to be kept at
99.9% or higher under DDoS attacks, which of the following is the MOST suitable product?