Download Online VALID ACA-Cloud1 Exam Dumps File Instantly[Mar 21, 2024]
ACA-Cloud1 Exam Dumps For Certification Exam Preparation
Alibaba Cloud ACA-Cloud1 (ACA Cloud Computing Associate) Certification Exam is an essential certification for anyone who wants to establish their careers in the cloud computing industry. It is designed to validate the candidate's knowledge of core cloud computing concepts and their ability to apply that knowledge in real-world scenarios. ACA-Cloud1 exam is suitable for beginners who want to pursue advanced certifications and is an excellent starting point for a career in cloud computing.
NEW QUESTION # 19
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?
- A. Five
- B. Eight
- C. Six
- D. Ten
Answer: A
NEW 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 "Remove 5 ECS instances", and creates a scheduled task based on this rule.
And then, the customer checks the scaling group and see it already contains 8 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?
- A. Six
- B. Five
- C. One
- D. Zero
Answer: A
Explanation:
Explanation
Alibaba Cloud Auto Scaling service allows you to automatically adjust the number of ECS instances in a scaling group based on your business needs and scaling policies. You can set the minimum and maximum number of instances in a scaling group to limit the range of scaling actions1. When you create a scaling rule, you can specify the number of instances to be added or removed, or the expected number of instances after the scaling action2. You can also create a scheduled task to execute a scaling rule at a specified time or periodically3.
In this question, the customer sets the minimum number of instances to 6 and the maximum number of instances to 8 in the scaling group. This means that the scaling group will always have at least 6 instances and at most 8 instances. The customer also adds a scaling rule to remove 5 instances, and creates a scheduled task based on this rule. However, this scaling rule will not be executed if it violates the minimum and maximum limits of the scaling group. Therefore, when the scheduled task is activated once, the scaling group will only remove 2 instances, which is the difference between the current number of instances (8) and the minimum number of instances (6). The remaining number of instances in the scaling group will be 6, which is the correct answer. References: 1: Create a scaling group - Auto Scaling - Alibaba Cloud Documentation Center2: Create a scaling rule - Auto Scaling - Alibaba Cloud Documentation Center3: Create a scheduled task - Auto Scaling
- Alibaba Cloud Documentation Center.
NEW QUESTION # 21
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. Confidential files on the server
- C. Database
- D. Web application
Answer: C
Explanation:
Explanation/Reference: https://www.rapid7.com/fundamentals/sql-injection-attacks/
NEW QUESTION # 22
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 ECS instances under the same SLB instance must be running on the same operating system
- B. All backend servers under the same SLB instance must be in the same Scaling Group
- C. SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling
- D. All backend servers under the same SLB instance must have the same configuration
Answer: C
NEW QUESTION # 23
Server Load Balancer supports protocols like ______________. (Choose four.)
- A. MPLS
- B. UDP
- C. TCP
- D. HTTP
- E. MQTT
- F. HTTPS
Answer: B,C,D,F
Explanation:
Comprehensive protocol support - ICMP, TCP, UDP, HTTP, HTTPS,
Reference: https://www.a10networks.com/resources/articles/server-load-balancing
NEW QUESTION # 24
If you are running an online ticket booking service with relatively fixed traffic, then which kind of charging mode is more suitable for you?
- A. Prepaid
- B. bitcoin-pay
- C. Paypal-pay
- D. Pay-As-You-Go
Answer: A
Explanation:
Explanation
Prepaid is a charging mode that allows you to pay in advance for a certain amount of resources for a specified period of time. It is also known as subscription or reserved instance. Prepaid is more suitable for scenarios with relatively fixed traffic, such as an online ticket booking service, because it offers lower prices and more stable performance than pay-as-you-go. Pay-as-you-go is a charging mode that allows you to pay only for the resources you actually use on an hourly basis. It is more suitable for scenarios with unpredictable or fluctuating traffic, such as a news website or a social media platform. Paypal-pay and bitcoin-pay are not valid charging modes for Alibaba Cloud Computing products.
References: 1: Alibaba Cloud Academy, "Charging Modes",
https://edu.alibabacloud.com/elearning/lesson/ACA-Cloud-Computing-Certification/lesson-1-charging-modes
NEW QUESTION # 25
ECS can be used along with_____to store static images, videos, and reducing storage fees.
- A. RDS
- B. OSS
- C. Server Load Balancer
- D. VPC
Answer: B
Explanation:
Explanation
ECS can be used along with OSS to store static images, videos, and reducing storage fees. OSS is a fully managed object storage service that provides industry-leading scalability, durability, and performance. OSS can store any amount of data from anywhere, such as static images, videos, backup files, and so on. ECS is a cloud computing service that provides elastic and secure virtual cloud servers. ECS can access OSS resources by using an internal endpoint of OSS, which reduces the network latency and the traffic costs. By using ECS and OSS together, you can benefit from the following advantages1:
Improved user experience: You can use OSS to store and deliver static content, such as images and videos, to your users. OSS integrates with CDN products to provide reliable, scalable, flexible, and cost-effective content distribution solutions. You can use ECS to run dynamic applications, such as web servers and databases, that require high performance and availability. ECS provides fast memory and the latest CPUs to help you power your cloud applications and achieve faster results with low latency.
Reduced storage fees: You can use OSS to store large amounts of data at a low cost. OSS offers four tiers of storage: Standard, Infrequent Access, Archive, and Cold Archive. Each tier is cost-optimized for specific storage patterns. You can use lifecycle policies to automatically transition your data to the appropriate storage tier based on your business needs. You can also use Storage Capacity Unit to plan your storage budget and usage in one place. You can use ECS to scale your computing resources up or down based on real-time demands. ECS supports pay-as-you-go and different capacity reservation plans.
You can also use spot instances to reduce your computing costs by up to 90%.
Enhanced security: You can use OSS to protect your data from unauthorized access, deletion, or modification. OSS supports encryption at rest and in transit, anti-leech protection, bucket policies, RAM roles, and more. You can also use your own key (BYOK) encryption to ensure your data is encrypted when it is stored in the cloud platform. You can use ECS to secure your cloud servers from network attacks, such as DDoS and brute force attacks. ECS supports security groups, firewalls, VPCs, SSL certificates, and more. You can also use Resource Access Management (RAM) to control the access permissions of your ECS instances and OSS buckets. References: Use Alibaba Cloud CDN to accelerate access to OSS
NEW QUESTION # 26
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. health check
- B. least connections scheduling
- C. session persistence
- D. Weighted Round Robin
Answer: C
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/55202.htm
NEW QUESTION # 27
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. Managed Security Service
- B. Anti-DDoS Service Pro
- C. Anti-DDoS Service Basic
- D. Situation Awareness
Answer: C
Explanation:
Reference:
https://www.alibabacloud.com/product/anti-ddos
NEW QUESTION # 28
Server Load Balancer supports protocols like . (Choose four.)
- A. MPLS
- B. UDP
- C. TCP
- D. HTTP
- E. MQTT
- F. HTTPS
Answer: B,C,D,F
Explanation:
Comprehensive protocol support - ICMP, TCP, UDP, HTTP, HTTPS,
Reference:
https://www.a10networks.com/resources/articles/server-load-balancing
NEW QUESTION # 29
You are developing a highly available web application using stateless web servers. Which services are suitable for the application? (Choose three.)
- A. SLB
- B. MaxCompute
- C. RDS
- D. OSS
- E. ECS
Answer: C,D,E
Explanation:
Reference:
http://docs-aliyun.cn-hangzhou.oss.aliyun-inc.com/pdf/slb-faq-intl-en-2017-03-29.pdf
NEW QUESTION # 30
Which of the following is not the database type supported by RDS?
- A. Oracle database
- B. MySQL
- C. SQL Server
- D. Postgre SQL
Answer: A
Explanation:
Explanation/Reference: https://aws.amazon.com/rds/features/
NEW QUESTION # 31
Which of the following statements is true for RDS?
- A. Databases with the same name are allowed in the same instance.
- B. Multiple databases can be created in one RDS instance.
- C. None of the above is true.
- D. Resources are not shared among the databases in the same RDS instance.
Answer: B
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/26092.htm
NEW QUESTION # 32
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. Confidential files on the server
- C. Database
- D. Web application
Answer: C
NEW QUESTION # 33
Using a cloud computing service is simple and straightforward. One can choose the instance with desired specification, finish payment and then use it right away. Moreover, the underlying physical machines are managed by cloud service providers and transparent to users.
- A. FALSE
- B. TRUE
Answer: B
Explanation:
Explanation
Using a cloud computing service is simple and straightforward. One can choose the instance with desired specification, finish payment and then use it right away. Moreover, the underlying physical machines are managed by cloud service providers and transparent to users. This is the basic concept of cloud computing, which provides on-demand, scalable, and reliable computing resources and services over the internet12.
References: 1: ACA Cloud Computing Exam Preparation Course - Alibaba Cloud3 2: What Is Alibaba Cloud Academy Certification?4
NEW QUESTION # 34
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 ECS instances under the same SLB instance must be running on the same operating system
- B. All backend servers under the same SLB instance must be in the same Scaling Group
- C. SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling
- D. All backend servers under the same SLB instance must have the same configuration
Answer: C
Explanation:
Explanation
SLB and Auto Scaling are two Alibaba Cloud services that can work together to provide high availability, scalability, and performance for your applications. SLB is a load balancing service that distributes incoming traffic across multiple ECS instances. Auto Scaling is a service that automatically adjusts the number of ECS instances based on your business needs. When you use SLB and Auto Scaling together, you need to follow some best practices and precautions to ensure the optimal performance and reliability of your system. One of the precautions is that SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling1. Health Check is a feature of SLB that monitors the health status of the backend ECS instances.
If an ECS instance becomes unhealthy or fails, SLB automatically stops sending traffic to that instance and redirects the traffic to other healthy instances. This ensures that your application can continue to serve user requests without interruption. Health Check is also essential for Auto Scaling, because Auto Scaling relies on the health status reported by SLB to decide whether to add or remove ECS instances. If an ECS instance is unhealthy, Auto Scaling will automatically replace it with a new one. If the traffic increases and the average health status of the ECS instances decreases, Auto Scaling will automatically add more instances. If the traffic decreases and the average health status of the ECS instances increases, Auto Scaling will automatically remove some instances. Therefore, Health Check is a prerequisite for using SLB and Auto Scaling together. If you disable Health Check, SLB and Auto Scaling will not be able to communicate with each other and coordinate their actions. This may result in performance degradation, service interruption, or resource waste.
The other options are incorrect, because they are not necessary or relevant for using SLB and Auto Scaling together. The backend ECS instances under the same SLB instance can have different operating systems, configurations, and scaling groups, as long as they can provide the same service and respond to the same requests. SLB and Auto Scaling do not impose any restrictions on these aspects of the ECS instances.
References: Associate SLB instances with or disassociate SLB instances from a scaling group
NEW QUESTION # 35
Which of the following scenarios is applicable to use RDS read-only instances?
- A. Implements data backtracking for the last two days.
- B. Reduces the write pressure on the RDS primary instance.
- C. Improves RDS storage capabilities.
- D. Reduces the read pressure on the RDS primary instance.
Answer: D
NEW QUESTION # 36
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.)
- A. 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.
- B. Import data into OSS to share the storage load of the platform.
- C. Use content delivery network, CDN, to accelerate the caching of the platform's css, JavaScript files etc.
- D. By adding a SLB instance and increase the number of ECS instances to reduce the work load on current ECS instances.
Answer: A,D
NEW QUESTION # 37
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
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/40654.htm
NEW QUESTION # 38
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
NEW QUESTION # 39
A/Anis a copy of data on a disk at a certain point in time.
- A. snapshot
- B. image
- C. EIP
- D. template
Answer: A
Explanation:
Explanation
A snapshot is a copy of data on a disk at a certain point in time. It is used to back up and restore data, or create custom images. Snapshots can capture the data of system disks, data disks, and shared block storage devices1.
References: 1: Alibaba Cloud Academy, "Snapshot",
https://edu.alibabacloud.com/elearning/lesson/ACA-Cloud-Computing-Certification/lesson-3-snapshot
NEW QUESTION # 40
Server Load Balancer can help protect from attack.
- A. Ransomware
- B. DDoS
- C. Virus
- D. SQL injection
Answer: B
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/27539.htm
NEW QUESTION # 41
Which three of the following statements about domain name binding to your OSS bucket are correct? (Choose three.)
- A. the number of domain names you bind to one bucket can't exceed 20
- B. Your customized domain name will be audited by Alibaba Cloud
- C. your customized domain name need to be put on record in MIIT (Ministry of Industry and Information Technology)
- D. mapping a domain name to your bucket endpoint is mandatory
Answer: A,B,C
Explanation:
Explanation
Domain name binding is a feature that allows you to use your own domain name to access your OSS bucket, instead of using the default OSS domain name. Domain name binding has the following requirements and limitations12:
Your customized domain name will be audited by Alibaba Cloud. You need to submit a domain name binding request and wait for approval before you can use your own domain name to access your OSS bucket.
Your customized domain name need to be put on record in MIIT (Ministry of Industry and Information Technology). This is a mandatory requirement for all websites that are hosted in mainland China. You need to provide your domain name information and relevant documents to MIIT and obtain an ICP filing number before you can use your own domain name to access your OSS bucket.
NEW QUESTION # 42
Which of the followings are not the operations that you can do on a cloud disk snapshot? (Choose two.)
- A. snapshot rollback
- B. snapshot deletion
- C. snapshot download
- D. snapshot duplicate
Answer: C,D
Explanation:
Explanation
According to the Alibaba Cloud Academy, a cloud disk snapshot is a point-in-time backup of a cloud disk.
You can use snapshots to back up data, create images, or restore data. The operations that you can do on a cloud disk snapshot are snapshot creation, snapshot deletion, snapshot rollback, and snapshot sharing.
Snapshot duplicate and snapshot download are not the operations that you can do on a cloud disk snapshot.
Therefore, the options A and C are the correct answers. References: Snapshot Overview - Alibaba Cloud Documentation Center, ACA Cloud Computing Exam Preparation Course - Alibaba Cloud, Module 3: Cloud Computing Storage, Lesson 2: Snapshot, Slide 2
NEW QUESTION # 43
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The Alibaba Cloud ACA-Cloud1 exam covers a wide range of topics related to cloud computing, including the basics of cloud computing, cloud architecture, security and compliance, storage, networking, and database concepts. ACA-Cloud1 exam is designed to test an individual's ability to manage and maintain cloud resources, as well as their understanding of how to deploy and manage various cloud services.
Latest Verified & Correct ACA-Cloud1 Questions: https://www.actual4cert.com/ACA-Cloud1-real-questions.html
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