ACA-CLOUD1 Online Practice Questions and Answers

A/An _________________ is a copy of data on a disk at a certain point in time.

A. image

B. snapshot

C. template

D. EIP

If you are running an online ticket booking service with relatively fixed traffic, then which kind of charging mode is more suitable for you?

A. Pay-As-You-Go

B. Prepaid

C. Paypal-pay

D. bitcoin-pay

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

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?

A. Anti-DDoS Service Basic

B. Managed Security Service

C. Situation Awareness

D. Anti-DDoS Service Pro

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.

Auto Scaling can automatically remove unhealthy ECS instances from the scaling group (this feature is called Elastic Self-Health). Yet, after removal, the user has to manually add equivalent amount of new ECS instances back to the scaling group.

A. TRUE

B. FALSE

Alibaba Cloud provides powerful security services (the same level of security services used to support Alibaba Group double 11 shopping festival). However, you have to pay first before using any of the security services.

A. TRUE

B. FALSE

Cloud disks are reliable because they use __________ to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.

A. a distributed file management system with 3 redundant copies

B. a file system

C. a double copy distributed system

D. a Linux file system

Some applications may encounter large traffic fluctuations within a short period. When ECS is used with _______, the number of ECS instances is automatically adjusted based on traffic.

A. Server Load Balancer

B. RDS

C. Auto Scaling

D. OSS

___________ feature in Server Load Balancer means that it can forward the access requests from a single user to the same ECS instance within a certain period to ensure session continuity.

A. session persistence

B. health check

C. Weighted Round Robin

D. least connections scheduling

Alibaba Cloud Object Storage Service (OSS) is a massive, highly available, secured and cost effective storage service. One of the special characteristics of OSS is its superior data reliability, because of its underlying backup technology and policies. Which of the following statement about OSS backup is correct?

A. OSS supports 3 internal data copies, so the data can be manually recovered should there be any problem.

B. Customer has to safeguard their own data. OSS provides various backup interfaces to facilitate offsite backups.

C. OSS leverages RAID0+1 configuration of its underlying physical hard disks. There is no impact even if 2 hard disks were to fail simultaneously.

D. OSS supports 3 internal data copies, no human intervention is required to recover the data when anything goes wrong.

Which of the following statements is true for RDS?

A. Multiple databases can be created in one RDS instance.

B. Databases with the same name are allowed in the same instance.

C. Resources are not shared among the databases in the same RDS instance.

D. None of the above is true.

Your friend purchases some Alibaba Cloud resources and uses them to build an online training website. Before the site goes online, your friend wants to perform some performance tests but doesn't know how to do it. In this case, which of the following services can help?

A. After-Sales Support Service

B. Support Ticket Service

C. Load and Performance Testing Service

D. None Of The Above

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

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