ACA-Cloud1 Pre-Exam Practice Tests | (Updated 74 Questions)
Valid ACA-Cloud1 Exam Q&A PDF - One Year Free Update
The ACA-Cloud1 exam is ideal for individuals who want to build a career in cloud computing. ACA-Cloud1 exam covers a broad range of topics that are essential for cloud computing professionals. These topics include cloud computing architecture, virtualization, storage, networking, security, and cloud computing deployment models. By passing the ACA-Cloud1 exam, individuals demonstrate their proficiency in these areas and their ability to work with Alibaba Cloud technologies.
Alibaba Cloud ACA-Cloud1 (ACA Cloud Computing Associate) Certification Exam is a comprehensive exam that covers a wide range of topics related to cloud computing. ACA-Cloud1 exam includes multiple-choice questions that test the knowledge and skills of candidates in cloud computing. The questions are designed to be challenging and to test the knowledge and skills of candidates in a real-world cloud computing environment.
NEW QUESTION # 10
Server Load Balancer can help protect fromattack.
- A. Ransomware
- B. DDoS
- C. Virus
- D. SQL injection
Answer: B
Explanation:
Explanation
Server Load Balancer (SLB) can help protect from distributed denial-of-service (DDoS) attacks by distributing network traffic across groups of backend servers to improve the service capability and application availability. SLB also supports built-in Anti-DDoS services to ensure business security. Anti-DDoS services can mitigate DDoS attacks at the Tbit/s level and provide multiple defense methods, such as blackhole filtering, traffic scrubbing, and access control1. In addition, you can integrate Application Load Balancer (ALB) with Web Application Firewall (WAF) in the console to ensure security at the application layer and prevent attacks such as SQL injection2. References: 1: Server Load Balancer(SLB) - Alibaba Cloud2: Associate an EIP protected by Anti-DDoS Pro/Premium with an ALB instance - Server Load Balancer - Alibaba Cloud Documentation Center.
NEW QUESTION # 11
You canan ECS instance's configuration. (Choose two.)
- A. downgraded
- B. upgraded
- C. uploaded
- D. downloaded
Answer: A,B
NEW QUESTION # 12
Alibaba Cloud relational database service (RDS) is a stable, reliable and elastic online database service. RDS supports below database types ? (Choose three.)
- A. SQL Server
- B. PostgreSQL
- C. Oracle database
- D. MySQL
Answer: A,B,D
NEW QUESTION # 13
Which 2 OSS object types can be configured as parameter for object lifecycle management? (Choose two.)
- A. Infrequent access
- B. Archive
- C. Chunk
- D. Snapshot
Answer: A,B
NEW QUESTION # 14
Alibaba Cloud OSS is a cloud storage service that features massive capacity, outstanding security, low cost, and high reliability. To control the access to the files stored on OSS, OSS provides multiple access permissions for each bucket. These bucket permissions are . (Choose three.)
- A. Public-read
- B. Private
- C. Private-read
- D. Public-read-write
Answer: A,B,D
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/100676.htm
NEW QUESTION # 15
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. Configure Auto Scaling appropriately to automatically add or reduce ECS instances.
- 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. 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.
- D. Configure Auto Scaling appropriately to automatically upgrade/downgrade the ECS instances.
Answer: A
Explanation:
Explanation
According to the Alibaba Cloud Academy, Auto Scaling is a service that automatically creates and releases ECS instances based on pre-defined rules in order to scale services to match demand. Furthermore, it can configure server load balancer and relational database service white lists, without any manual intervention.
Therefore, using Auto Scaling is the most preferred method from the perspective of cost and implementation simplicity, as it can dynamically adjust the number of ECS instances according to the traffic fluctuations, without requiring manual operations or wasting resources. The other methods are either too complex, inefficient, or costly to implement. References: Introduction to Alibaba Auto Scaling - Cloud Academy, ACA Cloud Computing Exam Preparation Course - Alibaba Cloud, Module 4: Cloud Computing Elasticity, Lesson
1: Auto Scaling, Slide 2.
NEW QUESTION # 16
You can an ECS instance's configuration. (Choose two.)
- A. downgraded
- B. upgraded
- C. uploaded
- D. downloaded
Answer: A,B
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/25437.htm
NEW QUESTION # 17
Alibaba Cloud Object Storage Service (OSS) is a massive, highly available, secured and cost effective storage service. OSS is superior than self-built storage in all these aspects. Which of the following advantage relates to the high availability of OSS?
- A. Data has to be backed up by customer manually, which is time-consuming and labor-intensive.
- B. Availability actually relies on the underlying hardware, which can break down easily. Once the hard disk malfunctions, it can also lead to permanent data loss.
- C. Data Reliability is not less than 99.99999999%. Data is backed up automatically with multiple redundant copies.
- D. The following features are available: Multiple Authentication and Authorization mechanism, Whitelist, Anti- leech URL, and Master-Sub Account
Answer: C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/blog/alibaba-cloud-object-storage-vs--ibm-cloud-and-oracle-cloud- equivalent_293464
NEW QUESTION # 18
Which of the following statements is true for RDS?
- A. None of the above is true.
- B. Resources are not shared among the databases in the same RDS instance.
- C. Databases with the same name are allowed in the same instance.
- D. Multiple databases can be created in one RDS instance.
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/26092.htm
NEW QUESTION # 19
You can retrieve data directly from an ECS Image and use it right away.
- A. FALSE
- B. TRUE
Answer: A
Explanation:
Explanation
An ECS image is a copy of data from one or more disks that are attached to an ECS instance. You cannot retrieve data directly from an ECS image and use it right away. You need to create an ECS instance from the image first, and then access the data on the disks of the instance. References: Elastic Compute Service:Image overview
NEW QUESTION # 20
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. Auto Scaling
- B. Server Load Balancer
- C. RDS
- D. OSS
Answer: A
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/25371.htm
NEW QUESTION # 21
Server Load Balancer can manage sudden spikes in traffic, minimize response time and maintain 99.99% availability of your web application.
- A. TRUE
- B. FALSE
Answer: A
Explanation:
Manage sudden spikes in traffic, minimize response time and maintain 99.99% availability of your web application with Server Load Balancer.
Reference:
https://arcelon.co.id/product/server_load_balancer.php
NEW QUESTION # 22
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. Aftersales Support
- B. Alibaba Cloud Product Operation Training
- C. Alibaba Cloud Architecture Design Training
- D. Event Management Service
Answer: C
Explanation:
Explanation
Alibaba Cloud Architecture Design Training is a service that provides professional guidance and best practices for designing cloud architectures that meet the business requirements and goals of the company. Alibaba Cloud Architecture Design Training can help the company to understand the cloud migration process, select the appropriate Alibaba Cloud products and services, design a secure, reliable, scalable, and cost-effective cloud architecture, and implement the migration plan with minimal risks and disruptions. Alibaba Cloud Architecture Design Training can also help the company to optimize the performance and efficiency of the cloud system after the migration.
References:
Alibaba Cloud Architecture Design Training
Cloud Migration - Alibaba Cloud Solutions
ACA-Cloud1 Alibaba Exam Questions and Answers - CertLibrary
NEW QUESTION # 23
Alibaba Cloud's object storage (Object Storage Service, OSS for short) can be used to store massive amount of files, but there is still a maximum number of files in a single bucket.
- A. FALSE
- B. TRUE
Answer: A
Explanation:
Explanation
According to the Alibaba Cloud Academy, Alibaba Cloud's object storage service (OSS) is a cloud storage service that enables you to store, backup, and archive any amount of data in the cloud. OSS is a cost-effective, highly secure, and highly reliable cloud storage solution. The capacity of each bucket is unlimited, and there is no limit on the number of files in a single bucket. Therefore, the statement is false. References: What is OSS? - Alibaba Object Storage Service Course - Cloud Academy, Object Storage Service(OSS): Store Data Safely In The Cloud - Alibaba Cloud Blog
NEW QUESTION # 24
You can create a custom image for ECS using which of the followings? (Choose two.)
- A. Data disk snapshot
- B. System disk snapshot
- C. Memory snapshot
- D. CPU snapshot
Answer: A,B
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/25460.htm
NEW QUESTION # 25
Which of the following ECS instance configurations can't be changed if we don't change instance type?
- A. Number of data disk
- B. Data disk size
- C. System disk size
- D. Mem size
Answer: D
Explanation:
Explanation
= A is the correct answer because the memory size of an ECS instance is determined by the instance type, and it cannot be changed independently. If you want to change the memory size of an ECS instance, you must change the instance type to another one that has a different memory size12 B, C, and D are incorrect answers because the system disk size, data disk size, and number of data disks of an ECS instance can be changed without changing the instance type. You can use the ECS console or API to resize the system disk or data disks of an ECS instance, or add or remove data disks from an ECS instance3456 References: 1: Overview of instance families 2: Change the instance type 3: Resize disks 4: Resize a disk 5: Attach or detach data disks 6: Attach or detach a data disk
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. Managed Security Service
- C. Anti-DDoS Service Basic
- D. Anti-DDoS Service Pro
Answer: C
NEW QUESTION # 27
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