Updated Sep-2021 Test Engine to Practice Test for ACA-Cloud1 Exam Questions and Answers!
ACA Cloud Computing Associate Certification Sample Questions and Practice Exam
NEW QUESTION 30
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.
- A. VPC
- B. RDS
- C. Auto Scaling
- D. Server Load Balancer
Answer: C
Explanation:
Reference:
https://www.alibabacloud.com/blog/designing-a-cloud-based-architecture-for-internet-of-vehicles- iov-series-ii_594263
NEW QUESTION 31
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 _________.
- A. Preparing
- B. Running
- C. Stopped
- D. Created
Answer: B
Explanation:
Explanation/Reference: http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNESS1876951_en- US_intl_181115175025_public_176152014821b385708e5290da11a0fe.pdf (14)
NEW QUESTION 32
A company wants to migrate its system to public cloud platform and they choose Alibaba Cloud. The migration process is very important and they want to ensure that everything works right. Which of the following services can the company choose?
- A. Alibaba Cloud Product Operation Training
- B. Event Management Service
- C. Aftersales Support
- D. Alibaba Cloud Architecture Design Training
Answer: D
NEW QUESTION 33
A/Anis a copy of data on a disk at a certain point in time.
- A. EIP
- B. snapshot
- C. image
- D. template
Answer: B
NEW QUESTION 34
Which of the followings are not the operations that you can do on a cloud disk snapshot? (Choose two.)
- A. snapshot rollback
- B. snapshot download
- C. snapshot deletion
- D. snapshot duplicate
Answer: B,D
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/52045.htm#section-1ff-9s6-3i5
NEW QUESTION 35
RDS provides whitelist access policies. You can set permitted IP addresses and IP network segments to effectively prevent hackers from attacking the server by port scanning.
- A. TRUE
- B. FALSE
Answer: B
Explanation:
Reference:
https://apsarastackdocument.oss-cn-hangzhou.aliyuncs.com/01_ApsaraStackEnterprise/V3.5.2- intl-en/Alibaba%20Cloud%20Apsara%20Stack%20Enterprise%201808%20Security%20Whitepaper%20-% 2020180831.pdf
NEW QUESTION 36
A/An _________________ is a copy of data on a disk at a certain point in time.
- A. EIP
- B. snapshot
- C. image
- D. template
Answer: B
NEW QUESTION 37
Server Load Balancer supports health checks for ECS instances and allows user to specify the frequency. If an ECS instance does not qualify the health check, traffic will not be forwarded to that instance, thereby ensuring application availability.
- A. TRUE
- B. FALSE
Answer: B
Explanation:
Explanation
NEW QUESTION 38
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?
- A. OSS + RDS combination
- B. OSS + MTS combination
- C. OSS + ECS combination
- D. OSS + CDN combination
Answer: C
NEW QUESTION 39
Anti-DDoS is one of the major features in Alibaba Cloud Security Service. Many websites have experienced different types of DDoS attacks, an accurate understanding of DDoS is crucial to protecting websites. Which of the following descriptions about DDoS attack is the most accurate one?
- A. The main purpose of DDoS attack is to make the target server unable to provide service normally, which is one of the network attacks that are most difficult to defend.
- B. The main target for DDoS attack is the database.
- C. The purpose of DDoS attack is to steal confidential information.
- D. DDoS attack will try to crack the password through a large number of attempts.
Answer: A
NEW QUESTION 40
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, no human intervention is required to recover the data when anything goes wrong.
- B. OSS leverages RAID0+1 configuration of its underlying physical hard disks. There is no impact even if
2 hard disks were to fail simultaneously. - C. Customer has to safeguard their own data. OSS provides various backup interfaces to facilitate offsite backups.
- D. OSS supports 3 internal data copies, so the data can be manually recovered should there be any problem.
Answer: C
NEW QUESTION 41
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.
- A. ECS
- B. Container Service
- C. CDN
- D. OSS
Answer: D
NEW QUESTION 42
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. WAF
- B. Server Guard
- C. Anti-DDoS Basic
- D. Anti-DDoS pro
Answer: A
Explanation:
Explanation
After adding your website to the WAF protection list, you can enable HTTP Flood protection and select an appropriate protection mode for the website
NEW QUESTION 43
Which of the followings are not the operations that you can do on a cloud disk snapshot? (Choose two.)
- A. snapshot rollback
- B. snapshot download
- C. snapshot deletion
- D. snapshot duplicate
Answer: B,D
NEW QUESTION 44
A company uses Alibaba Cloud SLB and Auto Scaling at the same time, hoping this combination can help save O&M cost and provide a stable and reliable system.
However, because they do not have relevant experience, the company's engineers listed some precautions based on their understanding, and turned the list to you for advice.
As an expert of Alibaba Cloud, you tell them only _______________ is correct.
- A. All backend servers under the same SLB instance must have the same configuration
- B. SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling
- C. All ECS instances under the same SLB instance must be running on the same operating system
- D. All backend servers under the same SLB instance must be in the same Scaling Group
Answer: B
Explanation:
Explanation/Reference: https://www.alibabacloud.com/blog/comprehensive-upgrade-of-alibaba-cloud-auto-scaling- product_594112
NEW QUESTION 45
Company B builds a music download website based on OSS and ECS, and users can download mp3 files after registering for the website. Recently, the public network traffic to the OSS has doubled but the increase of registered users is less than 10%. After in-depth analysis, engineers find that many user download requests are raised from search engine but not the website itself. In this case, which of the following measures is thought to be able to address this issue.
- A. Introduce SLB for extra protection.
- B. Limits access sources by configuring "Anti-leech settings" of OSS bucket attributes.
- C. Migrates music files from the OSS to the data disks for ECS instances.
- D. Changes the website access mode to HTTPS.
Answer: B
Explanation:
Reference:
http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNOSS11828897_en-US_intl_190202150837_public_b55986256a50380c526a35e863023ec9.pdf (55)
NEW QUESTION 46
You can __________________ an ECS instance's configuration. (Choose two.)
- A. uploaded
- B. downgraded
- C. downloaded
- D. upgraded
Answer: B,D
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/25437.htm
NEW QUESTION 47
A company uses Alibaba Cloud SLB and Auto Scaling at the same time, hoping this combination can help save O&M cost and provide a stable and reliable system.
However, because they do not have relevant experience, the company's engineers listed some precautions based on their understanding, and turned the list to you for advice.
As an expert of Alibaba Cloud, you tell them only________is correct.
- A. All backend servers under the same SLB instance must have the same configuration
- B. SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling
- C. All ECS instances under the same SLB instance must be running on the same operating system
- D. All backend servers under the same SLB instance must be in the same Scaling Group
Answer: B
NEW QUESTION 48
Cloud disks are reliable because they use to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
- A. a double copy distributed system
- B. a Linux file system
- C. a file system
- D. a distributed file management system with 3 redundant copies
Answer: D
Explanation:
An ECS disk can be used jointly or separately to meet the requirements of different application scenarios. ECS disks are categorized into ephemeral SSD disks and cloud disks. Compared with ephemeral SSD disks, cloud disks are more reliable as they use a triplicate distributed system to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
Reference:
http://docs-aliyun.cn-hangzhou.oss.aliyun-inc.com/pdf/ecs-product-introduction-intl-en-2017-03- 24.pdf
NEW QUESTION 49
Cloud disks are reliable because they use __________ to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
- A. a double copy distributed system
- B. a Linux file system
- C. a file system
- D. a distributed file management system with 3 redundant copies
Answer: D
Explanation:
An ECS disk can be used jointly or separately to meet the requirements of different application scenarios. ECS disks are categorized into ephemeral SSD disks and cloud disks. Compared with ephemeral SSD disks, cloud disks are more reliable as they use a triplicate distributed system to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
Reference: http://docs-aliyun.cn-hangzhou.oss.aliyun-inc.com/pdf/ecs-product-introduction-intl-en-2017-03-
24.pdf
NEW QUESTION 50
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. Load and Performance Testing Service
- B. Support Ticket Service
- C. After-Sales Support Service
- D. None Of The Above
Answer: C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/support/after-sales
NEW QUESTION 51
Alibaba Cloud does not support Intranet communication between products that are not in the same region, which does not mean?
- A. ECS instances and other products in different regions, such as ApsaraDB for RDS and OSS instances, cannot communicate with each other on the intranet.
- B. Server Load Balancer cannot be deployed for ECS instances in various regions.
- C. ECS instances in different regions cannot communicate with each other on the intranet.
- D. Server Load Balancer can be deployed for ECS instances in various regions.
Answer: A
NEW QUESTION 52
Which method is not supported by OSS to create a bucket?
- A. through cloud console
- B. through ECS instance filesystem directory operation
- C. through oss cmd tool
- D. through OSS API/SDK
Answer: C
NEW QUESTION 53
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