When we talk about the `Elastic' feature for ECS product, we are not talking about _____________.

A. Elastic Computing

B. Elastic Storage

C. Elastic Network

D. Elastic Administration

Your website has oscillating traffic peaks that are difficult to predict in advance. In this scenario, it is recommended to use SLB and __________________ together with ECS.

A. RDS

B. Auto Scaling

C. VPC

D. MaxCompute

You built an online shop using Alibaba Cloud services (ECS, RDS, ...etc.) and very soon you'll have a campaign that every customer that invites 3 friends will get a 50% off coupon. To avoid HTTP flood attacks and ensure only genuine customers (not bots) joining the event, which security product should you choose?

A. Anti-DDoS Basic

B. Anti-DDoS pro

C. WAF

D. Server Guard

You can __________________ an ECS instance's configuration. (Choose two.)

A. upgraded

B. downgraded

C. downloaded

D. uploaded

Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. Which of the following application scenarios are suitable for Auto Scaling? (Choose three.)

A. You need to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be added seamlessly to address traffic peaks and surges.

B. You need to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be reduced automatically to save costs when business needs drop.

C. When an ECS instance reacts abnormally in a scaling group, Auto Scaling will create a new ECS instance to take over the computing tasks conducted by the faulty instance.

D. You want to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be automatically upgraded (with more Memory, more powerful CPU) when needed.

You can retrieve data directly from an ECS Image and use it right away.

A. TRUE

B. FALSE

A video streaming company uses SLB to distribute user requests to 30 ECS instances (the 30 ECS instances have the same configuration). Yet, the company finds that the service traffic soars dramatically every night from 20:00 to 02:00. According to their calculation, the evening traffic is 100% higher than the traffic in other periods of time. To properly respond to user requests, which of the following methods is most preferred from the perspective of cost and implementation simplicity?

A. Configure Auto Scaling appropriately to automatically add or reduce ECS instances.

B. Manually create 30 ECS instances using the custom image, and then add them to SLB every night before 20:00 and remove them after 02:00.

C. Create 30 ECS instances based on the custom image and add them to SLB. Then, configure weights for these ECS instances to respond to user requests every night from 20:00 to 02:00, and reset those weights to zero for other periods of time.

D. Configure Auto Scaling appropriately to automatically upgrade/downgrade the ECS instances.

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

A. snapshot duplicate

B. snapshot rollback

C. snapshot download

D. snapshot deletion

Alibaba Cloud OSS is a cloud storage service that features massive capacity, outstanding security, low

cost, and high reliability. To control the access to the files stored on OSS, OSS provides multiple access

permissions for each bucket.

These bucket permissions are ____________. (Choose three.)

A. Private-read

B. Public-read-write

C. Public-read

D. Private

In which of the following cases would you need to apply an ICP license? (Choose three.)

A. Accelerate your Overseas Website in China

B. Launch your website in China

C. Launch your online shop in China

D. Open your office in China