ACP-CLOUD1 Online Practice Questions and Answers

An online education website is built based on ECS. SLB and Auto Scaling, which greatly reduces resource cost, OandM cost and without compromising system stability and user experience.

Now. the website admin wants to keep the user information (such as source IP, accessed URLs, and duration on each page) for analysis to support their upcoming campaign events In this case, which of the following statements is NOT correct?

A. Let each ECS instance in the scaling group keeps the user access information it processes Thus, the data saved by these ECS instances can be accessed and analyzed at any time, making the solution not only simple, but also efficient reliable, and cost-effective.

B. Save user-related access information to ApsaraDB for RDS in real time or quasi real time, which can then be used for performing query and analysis.

C. Synchronize user-Synchronize user-related access information to ApsaraDB for Memcache in real time or quasi real time. Then, access Memcache using an application or make the data in Memcache persistent based on certain rules and then can use the persistent data for further analysis.

D. Synchronize user-related access information to OSS in real time or quasi real time for further use

Alibaba Cloud Object Storage Service (OSS) is a cloud storage service that features massive capacity, outstanding security, low costs, and high reliability. In an OSS bucket, all elements are stored as________.

A. Hashes

B. Keys

C. Objects

D. Stubs

When using Alibaba Cloud SLB. you can set different weights for backend ECS instances The higher the weight of a backend ECS instance the more load will be assigned to it An SLB instance has 5 ECS instances in the backend server pool, all of which are healthy Among these 5 ECS instances, the weight of ecs_inst1 is set to 100. Which of the following statements is correct?

A. Based on request level parameters of external requests, all requests with a request level parameter of 100 will be transferred to ecs_inst1

B. Based on SLB's working mechanism, approximately 20% of loads will be assigned to ecs_inst1

C. We do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen

D. 100% of loads will be assigned to ecs__inst1, and the remaining 4 ECS instances will stay idle

Which of the following scenarios can be done using Alibaba Cloud Express Connection? (Number of correct answers: 2)

A. Intranet communication between VPCs and Smart Access Gateway in customers different branch offices

B. Intranet communication between a VPC and servers in an external IDC

C. Intranet communication between two VPCs in different accounts and different CIDR Blocks

D. Intranet communication between two VPCs under the same account in the same region

Auto Scaling can automatically adjust the number of ECS instances based on user-defined scaling rules to meet service needs. If a user cannot predict service changes or does not have enough history data, he/she can still use dynamic scaling mode to automatically add/remove ECS instances based on certain CloudMonitor performance metrics (such as the CPU utilization rate)

A. True

B. False

A Virtual Private Cloud (VPC) is an isolated network environment that is completely isolated from each other The following statements about VPC are correct_________. (Number of correct answers: 2)

A. Each VPC has an independent tunnel ID, and a tunnel ID corresponds to a virtualized network.

B. Subnets can be divided like the traditional network environment. Different cloud servers within each subnet are connected by the same router and different subnets are interconnected by switches.

C. ECS instances in a VPC use security group firewalls for Layer 2 network access control.

D. The internal networks of different VPCs are completely isolated and can be interconnected through IP addresses mapped to the outside.

When using Alibaba Cloud SLB, users can enable the health check function If a backend ECS instance A is running abnormally, SLB will isolate it and forward the requests to other ECS instances, and when the backend ECS instance A is back to normal, SLB will again forward requests to it.

A. True

B. False

Alibaba Cloud Server Load Balancer (SLB) provides services for distributing traffic among multiple ECS instances SLB can expand the application system's service capacity through traffic distribution, and improve the system's availability by eliminating SPoFs (Single Points of Failure). Which of the following statements are correct? (Number of correct answers; 2)

A. One of SLB's features is the Health Check. If some of the backend ECS instances are down, whereas other backend ECS instances can still provide services, then the system can continue to work normally.

B. When recreating an SLB instance that has an Internet IP address, a new Internet IP address will be assigned to the SLB instance.

C. Before using SLB to provide external services, make sure that you have installed and correctly configured the SLB agent on all of the backend ECS instances.

D. SLB provides a function to automatically synchronize data among backend ECS instances using rsync remote synchronization.

Many of Alibaba Cloud services provide highly reliable data storage capacity. For example, Object Storage Service (OSS) promises that its data reliability is no less than 99 99999999%. This high data reliability is solely achieved by RAID 0+1 redundancy technology.

A. True

B. False

Recently, response speed of a certain Alibaba Cloud Elastic Compute Service (ECS) instance is unacceptably slow. By using CloudMonitor we discovered that the ECS instance utilizes more than 80% of the assigned bandwidth. Which of the following approach can address this issue and without the need to reboot the ECS instance?

A. Upgrade the bandwidth of the ECS instance

B. None of the above

C. Upgrade the CPU and memory of the ECS ins

D. Add a disk to the ECS instance