2021 Valid ACA-Cloud1 Exam Updates - 2021 Study Guide
ACA-Cloud1 Certification - The Ultimate Guide [Updated 2021]
NEW QUESTION 12
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. OSS supports 3 internal data copies, no human intervention is required to recover the data when anything goes wrong.
- 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. Customer has to safeguard their own data. OSS provides various backup interfaces to facilitate offsite backups.
Answer: D
NEW QUESTION 13
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. Situation Awareness
- B. Anti-DDoS Service Basic
- C. Managed Security Service
- D. Anti-DDoS Service Pro
Answer: B
NEW QUESTION 14
Which of the following statements is true for RDS?
- A. Databases with the same name are allowed in the same instance.
- B. None of the above is true.
- C. Resources are not shared among the databases in the same RDS instance.
- D. Multiple databases can be created in one RDS instance.
Answer: D
NEW QUESTION 15
An enterprise hosts their servers (include both Linux and Windows servers) in a traditional IDC. Every night hackers with IP addresses from many countries try to crack the password of their servers, making the administrator terribly worried about this. However, because of work requirements, the remote management port of these servers must be opened to public network.
The administrator heard that Alibaba Cloud has solutions that can help customers improve the security of their systems. Therefore, he/she wants to migrate the system to Alibaba Cloud. Which of the following functions should the administrator activate in Alibaba Cloud to reduce the possibility of brute force password cracking?
- A. Situation Awareness
- B. Server Guard
- C. Anti-DDoS Basic Service
- D. CloudMonitor
Answer: B
Explanation:
Explanation/Reference: https://www.alibabacloud.com/blog/blogblogalibaba-cloud-server-guard-a-comprehensive- assessment_284390
NEW QUESTION 16
SQL injection is a common application layer attack, usually through building special input parameters and pass it to web applications to steal or sabotage the application data. Which of the following is the target for SQL injection?
- A. Pictures on server
- B. Database
- C. Confidential files on the server
- D. Web application
Answer: B
Explanation:
Explanation/Reference: https://www.rapid7.com/fundamentals/sql-injection-attacks/
NEW QUESTION 17
SQL injection is a common application layer attack, usually through building special input parameters and pass it to web applications to steal or sabotage the application data. Which of the following is the target for SQL injection?
- A. Pictures on server
- B. Database
- C. Confidential files on the server
- D. Web application
Answer: B
NEW QUESTION 18
What is the full name of ECS?
- A. Elastic Computing Server
- B. Elastic Compute Service
- C. Elastic Communication Server
- D. Elastic Cost Server
Answer: B
NEW QUESTION 19
A/An is a copy of data on a disk at a certain point in time.
- A. image
- B. template
- C. snapshot
- D. EIP
Answer: C
NEW QUESTION 20
__________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. least connections scheduling
- C. health check
- D. Weighted Round Robin
Answer: A
NEW QUESTION 21
Alibaba Cloud relational database service (RDS) is a stable, reliable and elastic online database service. RDS supports below database types ? (Choose three.)
- A. PostgreSQL
- B. SQL Server
- C. MySQL
- D. Oracle database
Answer: A,B,C
NEW QUESTION 22
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. None Of The Above
- D. After-Sales Support Service
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/support/after-sales
NEW QUESTION 23
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. 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.
- B. 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.
- C. Configure Auto Scaling appropriately to automatically add or reduce ECS instances.
- D. Configure Auto Scaling appropriately to automatically upgrade/downgrade the ECS instances.
Answer: C
Explanation:
Reference:
https://www.alibabacloud.com/product/auto-scaling
NEW QUESTION 24
An enterprise hosts their servers (include both Linux and Windows servers) in a traditional IDC. Every night hackers with IP addresses from many countries try to crack the password of their servers, making the administrator terribly worried about this. However, because of work requirements, the remote management port of these servers must be opened to public network.
The administrator heard that Alibaba Cloud has solutions that can help customers improve the security of their systems. Therefore, he/she wants to migrate the system to Alibaba Cloud. Which of the following functions should the administrator activate in Alibaba Cloud to reduce the possibility of brute force password cracking?
- A. Situation Awareness
- B. Server Guard
- C. Anti-DDoS Basic Service
- D. CloudMonitor
Answer: B
NEW QUESTION 25
ECS can be used along with ______ to store static images, videos, and reducing storage fees.
- A. VPC
- B. RDS
- C. OSS
- D. Server Load Balancer
Answer: C
Explanation:
Explanation/Reference: http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNA0011858383_en- US_intl_190320132947_public_91775d442a4b315acafcb25df8bcc84f.pdf
NEW QUESTION 26
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. Situation Awareness
- B. Anti-DDoS Service Basic
- C. Managed Security Service
- D. Anti-DDoS Service Pro
Answer: B
Explanation:
Reference:
https://www.alibabacloud.com/product/anti-ddos
NEW QUESTION 27
When we talk about the 'Elastic' feature for ECS product, we are not talking about _____________.
- A. Elastic Storage
- B. Elastic Computing
- C. Elastic Network
- D. Elastic Administration
Answer: D
Explanation:
Explanation/Reference:
NEW QUESTION 28
RDS for MySQL is a PaaS, which means after creating the RDS instance, the user does not need to take care of the underlying OS, runtime environment of software packages. These would be taken care of by Alibaba Cloud.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 29
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. 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.
- B. 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.
- C. Configure Auto Scaling appropriately to automatically add or reduce ECS instances.
- D. Configure Auto Scaling appropriately to automatically upgrade/downgrade the ECS instances.
Answer: C
NEW QUESTION 30
Alibaba Cloud Monitor service stems from years of experience of server monitoring technology in Alibaba group, leveraging the powerful data analysis capability of Alibaba cloud computing platform to provide monitoring service for various clients' applications and servers. A user receives an alert saying that the IOPS utilization rate for an ECS instance exceeds 80%. Yet, he/she is not sure how to handle the situation, the user may obtain help from Alibaba Cloud through the below methods ____________________? (Choose three.)
- A. Check ECS or CloudMonitor product documents.
- B. Look for answers in Alibaba Cloud forum.
- C. You cannot obtain any help from Alibaba Cloud.
- D. Open a ticket to Alibaba Cloud help desk.
Answer: A,B,D
NEW QUESTION 31
Server Load Balancer supports protocols like . (Choose four.)
- A. UDP
- B. HTTP
- C. MPLS
- D. HTTPS
- E. MQTT
- F. TCP
Answer: A,B,D,F
Explanation:
Comprehensive protocol support - ICMP, TCP, UDP, HTTP, HTTPS,
Reference:
https://www.a10networks.com/resources/articles/server-load-balancing
NEW QUESTION 32
A company wants to use Alibaba Cloud service to replace their self-built database, which of the following services should it choose?
- A. Deploy more ECS instances
- B. AsparaDB for RDS
- C. Alibaba Cloud CDN (Content Delivery Network)
- D. Server Load Balancer (SLB)
Answer: A
NEW QUESTION 33
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. VPC
- B. Auto Scaling
- C. RDS
- D. MaxCompute
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 duplicate
- B. snapshot download
- C. snapshot rollback
- D. snapshot deletion
Answer: A,B
NEW QUESTION 35
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