Question 1

Which three of the following statements about domain name binding to your OSS bucket are correct? (Choose three.)

Accepted Answer

A)  Your customized domain name will be audited by Alibaba Cloud 
B)  your customized domain name need to be put on record in MIIT (Ministry of Industry and Information Technology) 
C)  the number of domain names you bind to one bucket can't exceed 20 
D)  mapping a domain name to your bucket endpoint is mandatory 
A)  Your customized domain name will be audited by Alibaba Cloud 
B)  your customized domain name need to be put on record in MIIT (Ministry of Industry and Information Technology) 
C)  the number of domain names you bind to one bucket can't exceed 20 
D)  mapping a domain name to your bucket endpoint is mandatory A,B,D

Question 2

A large shopping mall deploys a new video surveillance system. The five-floor building in which the mall is located installed 35 HD cameras to monitor the major exits. The surveillance system is deployed on an ECS instance, which has four 2 TB data disks to store video data. However, video data grows rapidly and the engineers find that the ECS will run out of storage space within 2 weeks. In this case, _____________ product is thought to be the best solution for addressing the storage challenge while ensuring quick access to historical video data when needed.

Accepted Answer

A)  Container Service 
B)  ECS 
C)  OSS 
D)  CDN 
A)  Container Service 
B)  ECS 
C)  OSS 
D)  CDN C

Question 3

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

Accepted Answer

A)  snapshot duplicate 
B)  snapshot rollback 
C)  snapshot download 
D)  snapshot deletion 
A)  snapshot duplicate 
B)  snapshot rollback 
C)  snapshot download 
D)  snapshot deletion A,C

Question 4

Which of the following statements is wrong when comparing RDS with self-built database?

Accepted Answer

A)  RDS features a high availability of 99.95% while self-built database requires you to implement data protection, primary-standby replication, and RAID all by yourself. 
B)  RDS provides automatic backup while self-built database requires you to prepare storage space for backup copies and regularly verify that these copies can be restored. 
C)  Self-built database supports quick deployment and elastic scaling. 
D)  RDS requires no O&M while self-built database requires a dedicated DBA for maintenance, which results in high HR cost. 
A)  RDS features a high availability of 99.95% while self-built database requires you to implement data protection, primary-standby replication, and RAID all by yourself. 
B)  RDS provides automatic backup while self-built database requires you to prepare storage space for backup copies and regularly verify that these copies can be restored. 
C)  Self-built database supports quick deployment and elastic scaling. 
D)  RDS requires no O&M while self-built database requires a dedicated DBA for maintenance, which results in high HR cost.

Question 5

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?

Accepted Answer

A)  After-Sales Support Service 
B)  Support Ticket Service 
C)  Load and Performance Testing Service 
D)  None Of The Above 
A)  After-Sales Support Service 
B)  Support Ticket Service 
C)  Load and Performance Testing Service 
D)  None Of The Above

Question 6

You are developing a highly available web application using stateless web servers. Which services are suitable for storing session state data? (Choose two.)

Accepted Answer

A)  RDS 
B)  Table Store 
C)  MaxCompute 
D)  OSS 
A)  RDS 
B)  Table Store 
C)  MaxCompute 
D)  OSS

Question 7

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

Accepted Answer

A)  image 
B)  snapshot 
C)  template 
D)  EIP 
A)  image 
B)  snapshot 
C)  template 
D)  EIP

Question 8

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?

Accepted Answer

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. 
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.

Question 9

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.

Accepted Answer

A)  RDS 
B)  Auto Scaling 
C)  VPC 
D)  MaxCompute 
A)  RDS 
B)  Auto Scaling 
C)  VPC 
D)  MaxCompute

Question 10

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?

Accepted Answer

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. 
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.

Question 11

A company wants to use Alibaba Cloud service to replace their self-built database, which of the following services should it choose?

Accepted Answer

A)  AsparaDB for RDS 
B)  Server Load Balancer (SL
B)  
C)  Alibaba Cloud CDN (Content Delivery Network) 
D)  Deploy more ECS instances 
A)  AsparaDB for RDS 
B)  Server Load Balancer (SL
B)  
C)  Alibaba Cloud CDN (Content Delivery Network) 
D)  Deploy more ECS instances

Question 12

www.company.com is a newly launched social portal for exchanging automotive information. The portal is based on PHP, including 10GB of images, and some JavaScripts files. Currently one single ECS instance is used to host all the application content as well as a MySQL database. With the growing number of users, the portal is getting slower to load images or respond to user requests. Moreover, there will be additional 50GB image content uploaded to the portal every week. Which combination of Alibaba Cloud services below can help resolve the storage and performance issue at the same time?

Accepted Answer

A)  OSS + CDN combination 
B)  OSS + MTS combination 
C)  OSS + RDS combination 
D)  OSS + ECS combination 
A)  OSS + CDN combination 
B)  OSS + MTS combination 
C)  OSS + RDS combination 
D)  OSS + ECS combination

Question 13

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 _________.

Accepted Answer

A)  Running 
B)  Created 
C)  Stopped 
D)  Preparing 
A)  Running 
B)  Created 
C)  Stopped 
D)  Preparing

Question 14

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.

Accepted Answer

A) True 
 B)False

Question 15

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.)

Accepted Answer

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. 
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.

Question 16

Company A builds a sales management platform based on Alibaba Cloud services, using 3 ECS instances. One of the ECS instance has MySQL installed as the database server of the platform, the other two are used as WEB servers. After some time, due to the rapid increase of employees and sales analysis requests, the performance of the platform is challenged in terms of response time. Through CloudMonitor, it is found that the average CPU usage reaches 70% for the two WEB server ECS instances and the database load reaches 75% for the database server ECS instance. In this situation, company A may choose which Alibaba Cloud services to improve the performance _________________. (Choose two.)

Accepted Answer

A)  Use content delivery network, CDN, to accelerate the caching of the platform's css, JavaScript files etc. 
B)  By adding a SLB instance and increase the number of ECS instances to reduce the work load on current ECS instances. 
C)  Use RDS to replace existing self-built database, in order to obtain better database performance; also creating RDS read-only instances to handle read-only requests, hence reduce the work load on master RDS instance. 
D)  Import data into OSS to share the storage load of the platform. 
A)  Use content delivery network, CDN, to accelerate the caching of the platform's css, JavaScript files etc. 
B)  By adding a SLB instance and increase the number of ECS instances to reduce the work load on current ECS instances. 
C)  Use RDS to replace existing self-built database, in order to obtain better database performance; also creating RDS read-only instances to handle read-only requests, hence reduce the work load on master RDS instance. 
D)  Import data into OSS to share the storage load of the platform.

Question 17

You are developing a highly available web application using stateless web servers. Which services are suitable for the application? (Choose three.)

Accepted Answer

A)  RDS 
B)  SLB 
C)  ECS 
D)  MaxCompute 
E)  OSS 
A)  RDS 
B)  SLB 
C)  ECS 
D)  MaxCompute 
E)  OSS

Question 18

In mainland China, the approval requirements for business record filing vary depending on provincial communication management bureaus.

Accepted Answer

A) True 
 B)False

Question 19

Your website has high volume of traffic and sudden spikes for a very short time. In this scenario, ______________ can manage traffic peak efficiently and maintain a consistent user experience.

Accepted Answer

A)  Server Load Balancer 
B)  Auto Scaling 
C)  RDS 
D)  VPC 
A)  Server Load Balancer 
B)  Auto Scaling 
C)  RDS 
D)  VPC

Question 20

A customer uses Alibaba Cloud Auto Scaling service and creates a scaling group. He/she sets the "Minimum number of instances" to 6 and "Maximum number of instances" to 8. After correctly configuring scaling settings, the customer adds a scaling rule "Adjust to 10 ECS instances", and creates a scheduled task based on this rule. And then, the customer checks the scaling group and see it already contains 6 valid ECS instances, he/she then enables this scaling group immediately. How many ECS instances are left in the scaling group when the scheduled task is activated once?

Accepted Answer

A)  Eight 
B)  Ten 
C)  Six 
D)  Five 
A)  Eight 
B)  Ten 
C)  Six 
D)  Five

Exam 1: ACA Cloud Computing Certification Exam

Which three of the following statements about domain name binding to your OSS bucket are correct? (Choose three.)

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

Which of the following statements is wrong when comparing RDS with self-built database?

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?

You are developing a highly available web application using stateless web servers. Which services are suitable for storing session state data? (Choose two.)

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

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 company wants to use Alibaba Cloud service to replace their self-built database, which of the following services should it choose?

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 _________.

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.

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.)

You are developing a highly available web application using stateless web servers. Which services are suitable for the application? (Choose three.)

In mainland China, the approval requirements for business record filing vary depending on provincial communication management bureaus.

Your website has high volume of traffic and sudden spikes for a very short time. In this scenario, ______________ can manage traffic peak efficiently and maintain a consistent user experience.

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