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Exam ACP Cloud Computing Certification Exam
Number ACP-Cloud1
File Name Alibaba.ACP-Cloud1.VCEplus.2024-11-14.86q.vcex
Size 128 KB
Posted Nov 14, 2024
Downloads: 1
Download Alibaba.ACP-Cloud1.VCEplus.2024-11-14.86q.vcex


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Demo Questions

Question 1

Alibaba Cloud Content Delivery Network (CDN) is a distributed network that is built and overlaid on the bearer network. It is composed of edge node server clusters distributed across different regions.
The following steps ________________ are required when a user uses Alibaba Cloud CDN. (Choose two.)


  1. Refresh cache manually
  2. Add domain name into 'CDN Domain Name List'
  3. Modify domain name resolution and direct it to the given CNAME
  4. Activate CDN resource monitoring
Correct answer: BC
Explanation:
To use Alibaba Cloud CDN, you must add your domain to the 'CDN Domain Name List' and then modify the domain's DNS settings to point to the CNAME provided by Alibaba Cloud. Manual cache refresh (option A) is optional and not a necessary step for initial setup, and while monitoring is useful, it is not required for CDN operation, so option D is also not essential.
To use Alibaba Cloud CDN, you must add your domain to the 'CDN Domain Name List' and then modify the domain's DNS settings to point to the CNAME provided by Alibaba Cloud. Manual cache refresh (option A) is optional and not a necessary step for initial setup, and while monitoring is useful, it is not required for CDN operation, so option D is also not essential.



Question 2

A startup team developed an app named ''Public Image Service,'' which provides image management services for e-commerce websites. The app includes a self-developed API for file uploads, queries, and deletions, and aims to manage a large number of small images with fast global access. Currently, 500 GB of images and files are uploaded daily. The team is ready to migrate all applications to Alibaba Cloud. They should at least choose Alibaba Cloud ___________________ service. (Choose three.)


  1. Object Storage Service
  2. Elastic Compute Service
  3. Content Delivery Network
  4. Auto Scaling
Correct answer: ABC
Explanation:
For a service focused on storing and providing fast access to a massive amount of images, the team should use:Object Storage Service (OSS): For scalable and cost-effective storage of large image datasets.Elastic Compute Service (ECS): For running the application's backend and API logic.Content Delivery Network (CDN): To cache and accelerate image delivery globally, improving access speed for users worldwide.While Auto Scaling is useful for applications with highly variable compute demands, it is not essential for this setup based on the described requirements.
For a service focused on storing and providing fast access to a massive amount of images, the team should use:
Object Storage Service (OSS): For scalable and cost-effective storage of large image datasets.
Elastic Compute Service (ECS): For running the application's backend and API logic.
Content Delivery Network (CDN): To cache and accelerate image delivery globally, improving access speed for users worldwide.
While Auto Scaling is useful for applications with highly variable compute demands, it is not essential for this setup based on the described requirements.



Question 3

Which of the following statements is NOT correct, when comparing RDS with a self-built database?


  1. Self-built database support quick deployment and elastic scaling.
  2. RDS requires no O&M while self-built database require a dedicated DBA for maintenance, which results in high HR costs.
  3. RDS features a high availability of 99 95% while self-built databases require you to implement data protection primary-standby replication, and RAID all by yourself.
  4. RDS provides automatic backup while self-built databases require you to prepare storage space for backup copies and regularly verify that these copies can be restored.
Correct answer: A
Explanation:
The statement A is not correct, because self-built databases do not support quick deployment and elastic scaling. On the contrary, self-built databases require hardware procurement, data center hosting, and machine deployment, which can be time consuming and costly. Moreover, self-built databases have low resource utilization, as they have to accommodate peak traffic requirements, while RDS can scale elastically according to the actual demand.Reference: = ApsaraDB for RDS vs. Self-built Databases - Alibaba Cloud
The statement A is not correct, because self-built databases do not support quick deployment and elastic scaling. On the contrary, self-built databases require hardware procurement, data center hosting, and machine deployment, which can be time consuming and costly. Moreover, self-built databases have low resource utilization, as they have to accommodate peak traffic requirements, while RDS can scale elastically according to the actual demand.
Reference: = ApsaraDB for RDS vs. Self-built Databases - Alibaba Cloud



Question 4

Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies It supports adding an existing ECS instance into the scaling group but imposes certain requirements on instance region In this case, which of the following statements is true?


  1. The instance and the scaling group must be in the same region and zone.
  2. The instance and the scaling group must be in the same region but not necessarily the same zone.
  3. Each scaling group can span up to two regions. After adding the ECS instance, the number of regions of all the ECS instances in the scaling group must be no greater than two.
  4. The instance and the scaling group can be in different regions and zones.
Correct answer: B
Explanation:
According to the Alibaba Cloud documentation1, Auto Scaling is a service that automatically adjusts the number of elastic computing resources based on your business demands and policies. When the demand for computing resources increases, Auto Scaling automatically adds ECS instances to ensure sufficient computing capabilities. When the demand decreases, Auto Scaling automatically removes ECS instances to reduce costs.Auto Scaling supports adding an existing ECS instance into the scaling group, but the instance must meet some requirements1. One of the requirements is that the instance and the scaling group must be in the same region.However, they do not have to be in the same zone. A zone is a physical area within a region that has independent power grids and networks. A region is a geographic area where Alibaba Cloud deploys its resources. Therefore, the correct answer is B.1: Auto Scaling: Automatically Adjusts Computing Resources - Alibaba Cloud2: Introduction to Auto Scaling - Alibaba Cloud Document Center
According to the Alibaba Cloud documentation1, Auto Scaling is a service that automatically adjusts the number of elastic computing resources based on your business demands and policies. When the demand for computing resources increases, Auto Scaling automatically adds ECS instances to ensure sufficient computing capabilities. When the demand decreases, Auto Scaling automatically removes ECS instances to reduce costs.
Auto Scaling supports adding an existing ECS instance into the scaling group, but the instance must meet some requirements1. One of the requirements is that the instance and the scaling group must be in the same region.
However, they do not have to be in the same zone. A zone is a physical area within a region that has independent power grids and networks. A region is a geographic area where Alibaba Cloud deploys its resources. Therefore, the correct answer is B.
1: Auto Scaling: Automatically Adjusts Computing Resources - Alibaba Cloud
2: Introduction to Auto Scaling - Alibaba Cloud Document Center



Question 5

Recently, response speed of a certain Alibaba Cloud Elastic Compute Service (ECS) instance is unacceptably slow. By using CloudMonitor we discovered that the ECS instance utilizes more than 80% of the assigned bandwidth.
Which of the following approach can address this issue and without the need to reboot the ECS instance?


  1. Upgrade the bandwidth of the ECS instance
  2. None of the above
  3. Upgrade the CPU and memory of the ECS ins
  4. Add a disk to the ECS instance
Correct answer: A
Explanation:
According to the Alibaba Cloud Elastic Compute Service documentation, if the current public bandwidth does not meet your business requirements, you can upgrade or downgrade the public bandwidth configurations without the need to reboot the ECS instance. This can improve the network performance and response speed of the ECS instance. Upgrading the CPU, memory, or disk of the ECS instance may not solve the issue of bandwidth utilization, and may require rebooting the ECS instance.Reference: Public bandwidth - Elastic Compute Service
According to the Alibaba Cloud Elastic Compute Service documentation, if the current public bandwidth does not meet your business requirements, you can upgrade or downgrade the public bandwidth configurations without the need to reboot the ECS instance. This can improve the network performance and response speed of the ECS instance. Upgrading the CPU, memory, or disk of the ECS instance may not solve the issue of bandwidth utilization, and may require rebooting the ECS instance.
Reference: Public bandwidth - Elastic Compute Service



Question 6

SQL injection is a common attack on the application layer. It builds special input as a parameter to pass into a web application to steal or destroy the application data. Which of the following is the target that SQL injection eventually destroys or steals from?


  1. Web applications
  2. Redis database
  3. Confidential files on the server
  4. Pictures on the server
Correct answer: A
Explanation:
SQL injection attacks primarily target databases by exploiting vulnerabilities in web applications. Attackers manipulate SQL queries to gain unauthorized access to the application's backend database, which may lead to data leakage or destruction. Although SQL injection affects the data stored in databases and not directly files or images on the server, the primary target remains the application layer through which the attack is conducted.
SQL injection attacks primarily target databases by exploiting vulnerabilities in web applications. Attackers manipulate SQL queries to gain unauthorized access to the application's backend database, which may lead to data leakage or destruction. Although SQL injection affects the data stored in databases and not directly files or images on the server, the primary target remains the application layer through which the attack is conducted.



Question 7

You have set an alert policy for the disk usage of an ECS instance by using Alibaba Cloud CloudMonitor. Each measurement cycle lasts for 5 minutes, during which the average disk usage is measured. If the average disk usage exceeds 80% for five consecutive measurement cycles, an alert will be reported. After your average disk usage exceeds 80%, how long will it take to receive an alert?


  1. 0 minutes
  2. 30 minutes
  3. 40 minutes
  4. 20 minutes
Correct answer: B
Explanation:
With a measurement cycle of 5 minutes and a requirement for five consecutive cycles where disk usage exceeds 80%, it would take 55=255 \times 5 = 2555=25 minutes for CloudMonitor to confirm the condition. After confirmation, CloudMonitor typically processes and sends the alert, which may take an additional 5 minutes, totaling approximately 30 minutes before you receive the alert.
With a measurement cycle of 5 minutes and a requirement for five consecutive cycles where disk usage exceeds 80%, it would take 55=255 \times 5 = 2555=25 minutes for CloudMonitor to confirm the condition. After confirmation, CloudMonitor typically processes and sends the alert, which may take an additional 5 minutes, totaling approximately 30 minutes before you receive the alert.



Question 8

Alibaba Cloud will check source IP addresses that connect to ApsaraDB for RDS through the public internet. When Alibaba Cloud Situation Awareness detects an alert reporting ''a seldom-used IP address connecting to the database,'' which of the following is the safest way to handle this alert?


  1. This alert does not matter and can be ignored
  2. Log on to Alibaba Cloud console, modify the IP address whitelist for authorized access to RDS, and retain the IP addresses that need to connect to RDS
  3. Modify the security group policies for ECS instances, and allow only specified IP addresses to connect to the server
  4. Log on to RDS console, and view the SQL audit logs to check whether any destructive operation has been performed. If no, you do not need to handle the alert
Correct answer: B
Explanation:
The safest response to a seldom-used IP alert connecting to ApsaraDB for RDS is to adjust the IP whitelist to allow only trusted IP addresses. By limiting the IP addresses in the whitelist, unauthorized or unfamiliar IP addresses cannot access the database. This approach provides direct control over access to RDS and minimizes potential security risks. Checking SQL audit logs (as suggested in option D) is useful but not sufficient on its own for a comprehensive security response.
The safest response to a seldom-used IP alert connecting to ApsaraDB for RDS is to adjust the IP whitelist to allow only trusted IP addresses. By limiting the IP addresses in the whitelist, unauthorized or unfamiliar IP addresses cannot access the database. This approach provides direct control over access to RDS and minimizes potential security risks. Checking SQL audit logs (as suggested in option D) is useful but not sufficient on its own for a comprehensive security response.



Question 9

An enterprise uses a public cloud service to lease several virtual machines and places these virtual machines in an isolated virtual network. They have full control over their virtual network, including choosing their IP address range, specifying the CIDR block, configuring the routing table, and gateway, etc.
In Alibaba Cloud, the _____________ can work as described above.


  1. SDN service
  2. NFV service
  3. VPC service
  4. VPN service
Correct answer: C
Explanation:
In Alibaba Cloud, a Virtual Private Cloud (VPC) provides isolated virtual networking environments where users can configure their own IP address ranges, CIDR blocks, routing tables, gateways, and other network elements.This functionality is critical for users who require an isolated, customizable network environment for their virtual machines in the public cloud. SDN (Software-Defined Networking) and NFV (Network Functions Virtualization) are underlying technologies, while VPN offers secure connectivity but not full virtual network management.
In Alibaba Cloud, a Virtual Private Cloud (VPC) provides isolated virtual networking environments where users can configure their own IP address ranges, CIDR blocks, routing tables, gateways, and other network elements.
This functionality is critical for users who require an isolated, customizable network environment for their virtual machines in the public cloud. SDN (Software-Defined Networking) and NFV (Network Functions Virtualization) are underlying technologies, while VPN offers secure connectivity but not full virtual network management.



Question 10

When adopting cloud computing and taking advantage of its convenience, you will also face challenges in information security.
Using cloud computing does not increase security risks, but your active engagement is still a must. Which of the following is not included in the security principles recommended by Alibaba Cloud?


  1. Users have the same security management responsibility
  2. Users should keep the same data attribution
  3. Users have the same security management standards
  4. Users should keep the same O&M methods
Correct answer: D
Explanation:
In cloud environments, Alibaba Cloud emphasizes that security responsibilities, data ownership (data attribution), and security standards remain with the user. However, O&M (Operations and Maintenance) methods often change due to the distinct management tools, automated processes, and distributed nature of cloud infrastructure. Cloud environments typically use different O&M approaches, so option D is not aligned with Alibaba Cloud's security principles.
In cloud environments, Alibaba Cloud emphasizes that security responsibilities, data ownership (data attribution), and security standards remain with the user. However, O&M (Operations and Maintenance) methods often change due to the distinct management tools, automated processes, and distributed nature of cloud infrastructure. Cloud environments typically use different O&M approaches, so option D is not aligned with Alibaba Cloud's security principles.









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