[2024年04月] 検証済み Alibaba Cloud 試験問題集 ACP-Cloud1 試験学習ガイド [Q24-Q44]

[2024年04月] 検証済みAlibaba Cloud試験問題集でACP-Cloud1試験学習ガイド

ベスト品質のAlibaba Cloud ACP-Cloud1試験解答リアル練習試験問題集で[2024]

ACP-Cloud1認定を達成することは、クラウドコンピューティングプロフェッショナルのキャリアに大きな影響を与える可能性があります。これは、Alibaba Cloud Technologyにおける高レベルの専門知識と知識を示しており、専門家が競争の激しい雇用市場で自分自身を差別化するのに役立ちます。さらに、この認定は、新しい雇用機会、給与の増加、および雇用セキュリティの向上につながる可能性があります。

ACP-Cloud1認定試験では、クラウドアーキテクチャ、クラウドコンピューティングモデル、クラウドセキュリティ、クラウド展開など、クラウドコンピューティングに関連するさまざまなトピックをカバーしています。この試験は、Alibaba Cloudの製品とサービスを使用して、クラウドベースのソリューションを設計、展開、管理する候補者の能力をテストするように設計されています。試験はオンラインで実施され、複数選択の質問で構成されています。候補者は、試験に合格するために少なくとも60％を獲得する必要があります。

Alibaba Cloud ACP-Cloud1（ACPクラウドコンピューティングプロフェッショナル）認定試験は、クラウドコンピューティングにおける個人の専門知識を検証する、世界的に認められた認定資格です。ACP-Cloud1の認定試験は、展開、管理、およびセキュリティを含むクラウドコンピューティングのさまざまな側面をカバーし、個人の知識とスキルをテストするように設計されています。

質問 # 24
Which of the following statements is most accurate about the Data Transmission Service (DTS) database migration function?

A. Supports warning when source and destination has some unresolved conflict found.
B. Supports migrating MySQL databases from external sources.
C. Supports all of the above functions.
D. Supports database schema replication between instances.

正解：C

解説：
Explanation
Data Transmission Service (DTS) is a real-time data streaming service that supports data transmission between data sources such as relational databases, NoSQL, and Big Data (OLAP). DTS supports data migration, data synchronization, and change data subscription scenarios. DTS can migrate your data to and from most of the widely used commercial and open source databases. It supports homogeneous migrations such as MySQL to MySQL, as well as heterogeneous migrations between different database platforms, such as Oracle to MySQL.
Migrations can be from on-premises databases to RDS or ECS, databases running on ECS to RDS, or vice versa, as well as from one RDS database to another RDS database. DTS also supports database schema replication between instances, which means that DTS can automatically create the same schema as the source database in the target database. DTS also supports warning when source and destination has some unresolved conflict found, such as data type mismatch, primary key conflict, or foreign key constraint violation. DTS can help you resolve these conflicts by providing suggestions or allowing you to modify the data mapping rules.
Therefore, the correct answer is C. Supports all of the above functions. References:
1: Data Transmission Service - Alibaba Cloud
2: What is Data Transmission Service? - Alibaba Cloud
3: Database Migration - AlibabaCloud
4: Cloud Migration without Stopping Services: Alibaba Cloud DTS

質問 # 25
A new media company uses a mobile app to provide news and information services. They utilize Auto Scaling to add/reduce ECS instances dynamically to address service traffic spikes.
Based on the estimation of their service and technical personnel the company thinks they require 10 ECS instances during idle hours and 10 to 20 ECS instances (dynamically adjusted) during some busy hours, which are normally from 07:30 to 09:00 and from 18:30 to 20:00 In the scaling group; they set the "Minimum number of instances" to 10 and "Maximum number of instances" to 20.
To simplify deployment tasks and save costs, which of the following scaling modes should they choose?

A. Event-triggered mode
B. Healthy mode
C. Scheduled mode
D. Fixed quantity mode

正解：D

質問 # 26
Compared with traditional physical servers, upgrading an ECS instance is much easier. Which of the following statements about upgrading an ECS instance is false?

A. Upgrading the configuration of the ECS instance requires no' redeployment or data migration.
B. Upgrading network bandwidth does not require the ECS instance to restart.
C. You can upgrade the CPU, memory, and bandwidth.
D. You can change an instance's operating system without rebooting.

正解：D

解説：
Explanation
Changing an instance's operating system requires creating a custom image or using a public image, and then replacing the system disk of the instance. This process will cause the instance to restart. Therefore, this statement is false. References: ECS User Guide: Replace the system disk (non-public image) and ECS User Guide: Replace the system disk (public image)

質問 # 27
When the "'Obtain the Visitor's Real IP Address" function is enabled in Alibaba Cloud SLB For layer 7 services, you can obtain the real IP addresses of visitors through the______________field in HTTP header

A. Connection
B. X-Forwarded-For
C. Etag
D. Authorization

正解：A

質問 # 28
When using Alibaba Cloud SLB, users can enable the health check function If a backend ECS instance A is running abnormally, SLB will isolate it and forward the requests to other ECS instances, and when the backend ECS instance A is back to normal, SLB will again forward requests to it.

A. False
B. True

正解：B

解説：
Explanation
When using Alibaba Cloud SLB, users can enable the health check function to monitor the availability of the backend ECS instances. If a backend ECS instance A is running abnormally, SLB will stop forwarding requests to it and distribute them to other healthy ECS instances. This way, SLB can ensure the high availability and reliability of the service. When the backend ECS instance A is back to normal, SLB will resume forwarding requests to it. SLB performs health checks on the backend ECS instances at regular intervals and updates their status accordingly. Users can configure the health check parameters such as the protocol, port, interval, timeout, and threshold on the SLB console or by using the API. References: 1 - Health checks - Server Load Balancer - Alibaba Cloud Document Center - Health check overview

質問 # 29
Company A constructed a sales management platform using three Elastic Compute Service (ECS) instances. One of the instances runs MySQL, and is used as the database server. The other two instances are used as Web servers After some time, the number of employees in Company A dramatically increases, leading to higher sales volumes At the same time, the platform response speed is gradually decreasing too.
According to the report from CloudMonitor, the average CPU utilization rate of the two Web servers exceeds 70%, and database load reaches 75% Company A can select Alibaba Cloud_________ services.to cope with the issue and optimize the performance. (Number of correct answers: 2)

A. Incorporate Server Load Balancer (SLB) and add additional ECS instances to relieve the load on existing ECS instances
B. Use Content Delivery Network (CDN) to enhance content loading speed
C. Replace the self-built MySQL database with ApsaraDB for RDS to obtain better database performance, and utilize RDS read-only instances to handle read-only requests
D. Import database data into Object Storage Service (OSS) to share the storage pressure on the platform

正解：A、C

質問 # 30
Object Storage Service (OSS) supports sub accounts, and you can allocate access permissions to different buckets for each sub account.

A. False
B. True

正解：A

質問 # 31
You are using Auto Scaling with one scaling group already created, then you want to execute a task at a specific time such as removing 1 ECS instance every night at 00:00. To achieve this, which of the following operations should be performed'? (Number of correct answers; 2)

A. Create a scaling rule
B. Create an event-triggered task.
C. Create a scheduled task.
D. Create a new scaling group.

正解：A、D

質問 # 32
Alibaba Cloud CloudMonitor is a service that monitors Alibaba Cloud resources and Internet functions currently provided by CloudMonitor? (Number of correct answers: 3)

A. Site monitoring
B. Customized monitoring
C. Custom firewall
D. Cloud service monitoring
E. Operation auditing

正解：A、B、D

解説：
https://cloudacademy.com/course/alibaba-security-monitoring-1275/introduction-to-cloud-monitor/#:~:text=Cloud%20Monitor%20is%20a%20service,safeguard%20your%20products%20and%20business.

質問 # 33
You would like to deploy your applications on Alibaba Cloud to meet requirements including cost reduction, improving service availability, fast deployment- and redundant backup Alibaba Cloud_________products can help meet these requirements (Number of correct answers 3)

A. Elastic Compute Service (ECS) image achieve efficient and convenient deployment.
B. Reasonable selection of Regions/Zones meets the location needs of application deployment as well as the demands for redundantly backup critical business applications and data.
C. Elastic Compute Service (ECS) snapshot satisfies the needs of rapid recovery of applications and data.
D. Utilizing Content Delivery Network (CDN) can meet the demands for redundant backup.
E. Utilizing Server Load Balancer (SLB) and ECS instances can improve data reliability.

正解：A、B、E

解説：
Explanation
A: Elastic Compute Service (ECS) image achieve efficient and convenient deployment. This is correct because ECS images are pre-configured operating system environments that can be used to create and launch ECS instances quickly and easily. ECS images can reduce the cost and time of deploying applications on Alibaba Cloud1.
B: Utilizing Content Delivery Network (CDN) can meet the demands for redundant backup. This is incorrect because CDN is not a backup service, but a service that accelerates the delivery of content to end users by caching it at edge nodes. CDN can improve the performance and availability of applications, but it does not provide data redundancy or backup2.
C: Utilizing Server Load Balancer (SLB) and ECS instances can improve data reliability. This is correct because SLB is a service that distributes traffic among multiple ECS instances based on predefined rules. SLB can improve the availability and reliability of applications by eliminating single points of failure and ensuring that requests are routed to healthy instances3.
D: Elastic Compute Service (ECS) snapshot satisfies the needs of rapid recovery of applications and data. This is incorrect because ECS snapshot is a feature that allows users to create point-in-time backups of ECS disks. ECS snapshots can be used to restore data or create new disks, but they do not satisfy the needs of rapid recovery of applications and data. Snapshots are stored in Object Storage Service (OSS), which is a low-cost and durable storage service, but it has higher latency and lower performance than disks4.
E: Reasonable selection of Regions/Zones meets the location needs of application deployment as well as the demands for redundantly backup critical business applications and data. This is correct because regions and zones are the physical locations of Alibaba Cloud data centers. Regions are geographically isolated from each other, and zones are physically independent within the same region. Users can choose the regions and zones that best suit their application deployment needs, such as proximity to customers, compliance with local regulations, and availability of services. Users can also use multiple regions and zones to achieve redundancy and backup for their critical business applications and data.
References: 1: ECS Images 2: CDN Overview 3: SLB Overview 4: ECS Snapshots : Regions and Zones

質問 # 34
Different Alibaba Cloud VPCs are completely isolated from each other.
By default, the VPCs cannot communicate with each other over Intranet, but you can establish VPN connections via the Internet to achieve interconnection between VPCs.

A. False
B. True

正解：B

質問 # 35
After stopping an Alibaba Cloud Elastic Compute Service (ECS) instance, since the ECS instance is stopped, you will not be charged for anything related to that ECS instance until you start the instance again regardless of which region the instance is located in.

A. False
B. True

正解：A

解説：
Explanation
After stopping an Alibaba Cloud Elastic Compute Service (ECS) instance, you will not be charged for the instance usage fee or the public bandwidth fee (if applicable) until you start the instance again. However, you will still be charged for the disk usage fee and the snapshot usage fee (if applicable) regardless of which region the instance is located in. This is because the disks and snapshots are still occupying the storage space and need to be billed accordingly. Therefore, the statement is false. References: 1 - Billing FAQ - Alibaba Cloud Document Center - What fees do I need to pay after I stop a Pay-As-You-Go instance?

質問 # 36
Before data communication is setup, the security groups match the security group rules one by one to query whether to allow access requests Assume that the user has created two security group rules 1 and 2 The protocol type, port range, authorization type, and authorization object of the two security group rules are the same. The difference is that Rule 1 is a denial policy, rule 2 is an allowed policy, so the following statement is correct_______ (Number of correct answers 2)

A. If rule 1 and rule 2 have the same priority, the rule of the denial policy takes effect first, and the rule of the allowed policy does not take effect
B. If rule 1 and rule 2 have different priorities, the rule with a small priority number takes effect
C. If rule 1 and rule 2 have different priorities, the rule with a large priority number takes effect.
D. If rule 1 and rule 2 have the same priority, the rule of the allowed policy takes effect first, and the rule that of the denial policy does not take effect.

正解：A、B

質問 # 37
A company launched its online service just a year ago. It uses five ECS instances and does not have a full-time system administrator Over the last six months, the company's system has encountered various security problems Several high-risk vulnerabilities were exploited by hackers, leading to leakage of the company's confidential dat
a. Which of the following Alibaba Cloud products can be used to quickly resolve this problem?

A. Managed Security Service
B. Anti-DDoS Pro Service
C. Security Center
D. Cloud Firewall

正解：D

質問 # 38
If you want to build a secure and isolated network environment on Alibaba Cloud; meanwhile, design your network topology and specify Intranet IP addresses or CIDR Blocks in this network environment as needed, you can choose

A. Auto Scaling
B. Virtual Private Cloud (VPC)
C. Express Connect
D. Leased line

正解：B

質問 # 39
Auto Scaling can automatically adjust the number of ECS instances based on user-defined scaling rules to meet service needs. If a user cannot predict service changes or does not have enough history data, he/she can still use dynamic scaling mode to automatically add/remove ECS instances based on certain CloudMonitor performance metrics (such as the CPU utilization rate)

A. False
B. True

正解：B

質問 # 40
Many websites have suffered DDoS attacks of different volumes. Therefore, accurate understanding of DDoS attacks is critical to website security protection. Which of the following statements about DDoS attacks is the MOST accurate?

A. DDoS attacks primarily target databases.
B. A DDoS attacks crack the server's logon password by means of a massive number of attempts.
C. The purpose of a DDoS attack is to steal confidential information.
D. The main purpose of a DDoS attack is to prevent the target server from providing normal services.
Currently, the DDoS attack is one of the strongest and most indefensible website attacks.

正解：D

解説：
Explanation
A DDoS attack is a type of cyberattack that aims to exhaust the resources of a target server or network, such as bandwidth, CPU, memory, or disk space, by sending a large amount of malicious traffic or requests. This can cause the server or network to slow down, crash, or become unavailable to legitimate users. A DDoS attack is not intended to steal confidential information, crack passwords, or target databases, although these may be secondary objectives or consequences of some attacks. A DDoS attack is one of the most common and powerful threats to website security, as it can be launched from multiple sources, use various attack methods, and evade traditional defense mechanisms. According to the DDoS Attack Statistics and Trend Report by Alibaba Cloud, the proportion of volumetric attacks at 50Gbps and above has doubled, and the resources exhaustion attack reached a peak value of 3 million QPS in 2020-2021. References: DDoS Attacks: Sources, Strategies and Practices - Alibaba Cloud, DDoS Attack Statistics and Trend Report by Alibaba Cloud, Use Alibaba Cloud Anti-DDoS Service to Defend DoS Attack, Anti-DDoS Basic - Alibaba Cloud

質問 # 41
The backend server pool of an Alibaba Cloud SLB contains multiple ECS instances, which may have different service capacities. To exploit the different service capacities of backend ECS instances, which of the following statements is correct?

A. Choose Weighted Least-Connection mode, and ECS instances with higher capacities will surely be assigned with more requests.
B. Choose Weighted Round Robin mode to set higher weights to ECS instances with higher capacities The higher the weight of the backend ECS instance the higher chance that the instance will receive requests.
C. Choose Round-Robin model and ECS instances with higher capacities will surely be assigned with more requests.
D. SLB cannot assign more requests to certain ECS instances.

正解：B

解説：
Explanation
Weighted Round Robin (WRR) is a load balancing mode that assigns requests to backend ECS instances based on their weights. The higher the weight of the backend ECS instance, the higher the chance that the instance will receive requests. This mode can exploit the different service capacities of backend ECS instances by setting higher weights to ECS instances with higher capacities. For example, if there are two ECS instances in the backend server pool, one with a weight of 10 and the other with a weight of 20, the ECS instance with a weight of 20 will receive twice as many requests as the ECS instance with a weight of 10.
References:
1: SLB overview - Server Load Balancer - Alibaba Cloud Documentation Center
4: Server Load Balancer - Alibaba Cloud
5: Alibaba Server Load Balancer (SLB) Course - Cloud Academy

質問 # 42
Alibaba Cloud provides comprehensive security protection covering networks, hosts, applications, databases, and content for on-cloud clients. Users using Alibaba Cloud services only need to focus on their own services, without the need to pay any attention to security protection issues.