Alibaba Cloud ACP-Cloud1 Exam Preparation Guide and PDF Download
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Alibaba Cloud ACP-Cloud1 (ACP Cloud Computing Professional) Exam is a certification program designed to validate the skills and knowledge of professionals who work with Alibaba Cloud computing solutions. ACP-Cloud1 exam covers various topics related to cloud computing, including cloud architecture, infrastructure, security, and management. ACP Cloud Computing Professional certification is ideal for individuals who want to demonstrate their expertise in cloud computing and differentiate themselves in the job market.
Alibaba Cloud ACP-Cloud1 certification is an excellent opportunity for IT professionals to demonstrate their expertise in cloud computing technologies. ACP Cloud Computing Professional certification exam is designed to validate the skills and knowledge required for designing, deploying, and managing cloud-based solutions using Alibaba Cloud services. By passing the ACP-Cloud1 certification exam, IT professionals can enhance their career prospects and gain recognition for their cloud computing skills.
NEW QUESTION # 19
You have created two Alibaba Cloud VPCs in two different regions To establish communication between these two VPCs via the Intranet, you can________.
- A. No operation is needed, as VPCs under the same account are connected through the Intranet by default
- B. Use the VRouter to create a new route table to enable the communication
- C. Use CEN to establish communication between VPCs
- D. Create a new access rule through the Security Group to enable the communication
Answer: C
NEW QUESTION # 20
Alibaba Cloud Content Delivery Network (CDN) performs content acceleration with the support of intelligent DNS resolution The following function_________is NOT included in intelligent DNS resolution.
- A. A user request is directed to the server nearest to the customer based on location information of the pre-configured IP section.
- B. The intelligent DNS resolution supports web page content caching. A user will receive data from the origin site at first-time access, and then will be reading data from cache in subsequent requests
- C. The intelligent DNS resolution can parse the same domain name into different IP addresses based on the IP of different visitors.
- D. If a user activates mirror sites in different IDCs, intelligent DNS resolution can achieve load balancing by guiding customers in different places to different mirror sites.
Answer: B
Explanation:
Explanation
Intelligent DNS resolution is a feature of Alibaba Cloud DNS that allows users to configure different IP addresses for the same domain name based on the geographic locations or ISPs of the visitors. This way, visitors can access the nearest or optimal server for better performance and availability. Intelligent DNS resolution does not support web page content caching, which is a function of Alibaba Cloud CDN. Alibaba Cloud CDN is a distributed network that delivers content from the origin server to the edge nodes closest to the end users, reducing the network latency and bandwidth consumption. Alibaba Cloud CDN caches the static content of the web pages, such as images, CSS, and JavaScript files, on the edge nodes, so that the users can access them faster and reduce the load on the origin server. A user will receive data from the cache in the first-time access, and then will be updated from the origin site in subsequent requests based on the cache expiration time.
References:
1: Intelligent DNS resolution - Alibaba Cloud DNS - Alibaba Cloud Documentation Center
4: Alibaba Cloud Content Delivery Network (CDN) performs content acceleration with the support of intelligent DNS resolution The following function_________is NOT included in intelligent DNS resolution.
5: Alibaba Cloud DNS:Alibaba Cloud line for intelligent DNS resolution (September 16, 2020) - Alibaba Cloud Documentation Center
NEW QUESTION # 21
RDS provides whitelist access policies. You can set permitted IP addresses and IP network segments to effectively prevent hackers from attacking the server by port scanning.
- A. False
- B. True
Answer: B
NEW QUESTION # 22
To meet business requirements, a user requires that the backend server of an SLB instance include a primary ECS instance and a secondary ECS instance. When the primary instance is working properly, the traffic is only forwarded to the primary ECS, when the primary instance is down, traffic is switched to the standby instance. In this case, you can create an active/standby server group on the backend of the SLB instance Which kind of listener supports this feature? (Number of correct answers: 2)
- A. UDP
- B. HTTP
- C. TCP
- D. HTTPS
Answer: A,D
NEW QUESTION # 23
After creating an RDS for MySQL read-only instance, which of the following CAN NOT be performed by the read-only instance in RDS management console?
- A. SQL log auditing
- B. Specification change
- C. Parameter configuration
- D. Intranet/Internet switchover
Answer: C
NEW QUESTION # 24
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 an event-triggered task.
- B. Create a scheduled task.
- C. Create a new scaling group.
- D. Create a scaling rule
Answer: C,D
NEW QUESTION # 25
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 Round-Robin model 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 Weighted Least-Connection mode, and ECS instances with higher capacities will surely be assigned with more requests.
- D. SLB cannot assign more requests to certain ECS instances.
Answer: B
NEW QUESTION # 26
An online education website is built based on ECS. SLB and Auto Scaling, which greatly reduces resource cost, O&M cost and without compromising system stability and user experience.
Now. the website admin wants to keep the user information (such as source IP, accessed URLs, and duration on each page) for analysis to support their upcoming campaign events In this case, which of the following statements is NOT correct?
- A. Synchronize user-Synchronize user-related access information to ApsaraDB for Memcache in real time or quasi real time. Then, access Memcache using an application or make the data in Memcache persistent based on certain rules and then can use the persistent data for further analysis.
- B. Synchronize user-related access information to OSS in real time or quasi real time for further use
- C. Let each ECS instance in the scaling group keeps the user access information it processes Thus, the data saved by these ECS instances can be accessed and analyzed at any time, making the solution not only simple, but also efficient reliable, and cost-effective.
- D. Save user-related access information to ApsaraDB for RDS in real time or quasi real time, which can then be used for performing query and analysis.
Answer: C
Explanation:
Explanation
This statement is not correct because it is not a good practice to store user access information on each ECS instance in the scaling group. This is because the ECS instances are dynamic and can be added or removed by the Auto Scaling service based on the load and demand. Therefore, the data stored on the ECS instances may be lost or inconsistent if the instances are terminated or replaced. Moreover, this approach does not provide a centralized and unified way to access and analyze the data, which may affect the accuracy and efficiency of the analysis. Therefore, it is better to use other services such as ApsaraDB for RDS, ApsaraDB for Memcache, or OSS to store the user access information in a persistent and scalable manner. References: Auto Scaling, ApsaraDB for RDS, ApsaraDB for Memcache, OSS
NEW QUESTION # 27
The Alibaba Cloud CDN can directly accelerate access to the files stored in OSS and reduce OSS traffic costs.
- A. False
- B. True
Answer: B
NEW QUESTION # 28
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
Answer: B
NEW QUESTION # 29
As a concept stem from cloud computing, cloud storage service provides on-demand storage and data services to users through a unified interface Which of the following characteristics about cloud storage are correct?
(Number of correct answers: 4)
- A. Transparent service: Provides the service through a single SDK
- B. High scalability Storage capacity can be dynamically scaled to meet the needs.
- C. Ultra-large scale: Data storage can reach TB or even PB level
- D. Management and maintenance: To prevent emergent service termination, users need to know the underlying detail like how the data is archived in the resource pool.
- E. Service on demand Cloud storage has a huge resources pool, users can apply for and use the resources on demand.
- F. High reliability and availability: Provides very high reliability and availability through technologies like
3 redundant copies, automatic failure recovery, etc.
Answer: B,C,E,F
Explanation:
Explanation
A: Management and maintenance: To prevent emergent service termination, users need to know the underlying detail like how the data is archived in the resource pool. This is incorrect because cloud storage is designed to abstract the underlying details of how the data is stored and managed from the users. Users do not need to worry about the hardware, software, or network issues that may affect the data availability or reliability. The cloud storage provider is responsible for maintaining and managing the storage infrastructure and ensuring the service continuity1.
B: Service on demand Cloud storage has a huge resources pool, users can apply for and use the resources on demand. This is correct because cloud storage is based on the cloud computing model of service on demand, which means that users can request and access the storage resources as needed, without having to purchase or provision them in advance. Cloud storage providers offer flexible pricing models that allow users to pay only for the storage they use2.
C: High reliability and availability: Provides very high reliability and availability through technologies like 3 redundant copies, automatic failure recovery, etc. This is correct because cloud storage uses various technologies and methods to ensure that the data stored in the cloud is always accessible and durable. For example, cloud storage providers typically replicate the data across multiple servers, regions, or zones to prevent data loss due to hardware failure, natural disaster, or human error. Cloud storage providers also use automatic failure recovery mechanisms to detect and repair any issues that may affect the data integrity or availability3.
D: Ultra-large scale: Data storage can reach TB or even PB level. This is correct because cloud storage can handle massive amounts of data, ranging from terabytes (TB) to petabytes (PB) or even exabytes (EB). Cloud storage providers have the infrastructure and expertise to scale up the storage capacity and performance to meet the growing data needs of users. Cloud storage can support various types of data, such as structured, unstructured, or semi-structured data, and various use cases, such as data backup, data archiving, data analytics, or data sharing.
E: Transparent service: Provides the service through a single SDK. This is incorrect because cloud storage is not a transparent service, but a service that requires users to interact with it through a specific interface or protocol. Cloud storage providers usually offer different types of storage services, such as object storage, block storage, or file storage, each with its own characteristics and features. Users need to choose the appropriate storage service for their data and use the corresponding software development kit (SDK), application programming interface (API), or command-line interface (CLI) to access and manipulate the data.
F: High scalability Storage capacity can be dynamically scaled to meet the needs. This is correct because cloud storage is highly scalable, meaning that users can increase or decrease the storage capacity according to their data needs. Cloud storage providers offer elastic storage services that can automatically adjust the storage resources based on the demand, without requiring users to manually provision or deprovision them. Cloud storage also allows users to scale the storage performance, such as throughput, latency, or bandwidth, to optimize the data access and transfer.
References: 1: What is Cloud Storage? - Cloud Storage Explained - AWS 2: What is Cloud Storage & How Does it Work? | Google Cloud 3: Cloud Storage Reliability and Availability | Cloud Storage Documentation :
What is Cloud Storage? - Definition from Techopedia : Cloud Storage Types: Object, Block, and File | IBM :
Cloud Storage Scalability | Cloud Storage Documentation
NEW QUESTION # 30
Alibaba Cloud Elastic Compute Service (ECS) instances in different Security Groups will definitely have no way to communicate with each other.
- A. False
- B. True
Answer: B
NEW QUESTION # 31
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. Use Content Delivery Network (CDN) to enhance content loading speed
- B. Import database data into Object Storage Service (OSS) to share the storage pressure on the platform
- 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. Incorporate Server Load Balancer (SLB) and add additional ECS instances to relieve the load on existing ECS instances
Answer: C,D
Explanation:
Explanation
Option B is correct because using Server Load Balancer (SLB) and adding additional ECS instances can help to distribute the traffic among multiple servers and improve the availability and scalability of the platform. SLB can also provide health checks and fault tolerance for the ECS instances1 Option D is correct because replacing the self-built MySQL database with ApsaraDB for RDS can provide better database performance, security, and reliability. ApsaraDB for RDS is a fully managed cloud database service that supports MySQL, SQL Server, PostgreSQL, and other engines. It can automatically handle tasks such as backup, recovery, monitoring, and patching. Using RDS read-only instances can also handle read-only requests and reduce the load on the primary database2 Option A is incorrect because importing database data into Object Storage Service (OSS) will not share the storage pressure on the platform. OSS is a cloud storage service that provides high durability, availability, and scalability for storing unstructured data such as images, videos, and documents. It is not suitable for storing structured data such as database tables. Moreover, importing data into OSS will incur additional costs and latency3 Option C is incorrect because using Content Delivery Network (CDN) will not enhance the content loading speed of the platform. CDN is a distributed network that delivers content to users based on their geographic locations, the origin of the content, and the content delivery server. It is mainly used to accelerate the delivery of static content such as images, videos, and scripts. It is not effective for dynamic content such as database queries and transactions4 References:
1: Server Load Balancer - Alibaba Cloud
2: ApsaraDB for RDS - Alibaba Cloud
3: Object Storage Service - Alibaba Cloud
4: Content Delivery Network - Alibaba Cloud
NEW QUESTION # 32
When you create an Alibaba Cloud VPC. a VRouter and a route table will be created automatically. Which of the following statements is NOT correct about the route table?
- A. This route table cannot be deleted
- B. Each VRouter may have multiple route tables.
- C. When a VPC is deleted, the corresponding route table is also deleted.
- D. The routing entries of the route table can not be modified manually.
Answer: C
NEW QUESTION # 33
When creating an ECS instance in your Alibaba Cloud VPC, you must specify a VSwitch for that instance at the same time. Otherwise, you will not be able to create this ECS instance.
- A. False
- B. True
Answer: B
Explanation:
Explanation
When creating an ECS instance in your Alibaba Cloud VPC, you must specify a VSwitch for that instance at the same time. Otherwise, you will not be able to create this ECS instance. This is true according to the Alibaba Cloud documentation on ECS1. A VSwitch is a basic network device of a VPC and is used to connect different cloud product instances deployed in a VPC2. A VSwitch defines a network segment within a VPC and allows you to specify the IP address range, network mask, and gateway for the network segment2. When you create an ECS instance, you must select a VSwitch that belongs to the same zone as the ECS instance3. If you do not specify a VSwitch, the ECS instance will not be able to communicate with other cloud product instances in the VPC or access the Internet. References: 1: Create an instance by using the provided wizard - Elastic Compute Service - Alibaba Cloud Documentation Center 2: What is a VSwitch? - Virtual Private Cloud - Alibaba Cloud Documentation Center 3: Create an instance by using the advanced wizard - Elastic Compute Service - Alibaba Cloud Documentation Center : [VPC FAQ - Virtual Private Cloud - Alibaba Cloud Documentation Center]
NEW QUESTION # 34
When a customer uses Alibaba Cloud Object Storage Service (OSS) service and finds there exist an amount of Internet downstream traffic, he/she can use Alibaba Cloud Content Delivery Network (CDN) service to reduce the traffic cost.
Because the Internet traffic cost of CDN is lower than that of OSS, moreover, the back-to-source traffic cost from CDN to OSS is also lower than a user access to OSS directly.
- A. False
- B. True
Answer: B
NEW QUESTION # 35
Many cloud computing service providers support users to activate/create a cloud service through Open API.
Which of the following protocols is most not likely to be supported by these Open API?
- A. Restful
- B. HTTP
- C. Web Service
- D. PPPoE
Answer: D
Explanation:
Explanation
PPPoE stands for Point-to-Point Protocol over Ethernet, which is a network protocol that encapsulates PPP frames in Ethernet frames and allows multiple computers to share a single Internet connection. PPPoE is typically used by Internet service providers (ISPs) to provide broadband access to their customers, such as DSL or cable modem. PPPoE is not a protocol that is commonly supported by Open API for cloud computing service providers, because it is not designed for web-based communication and requires a dedicated connection between the client and the server. Open API, on the other hand, is a term that refers to a set of publicly available application programming interfaces (APIs) that allow developers to access the functionality and data of cloud computing service providers. Open API usually follows standard protocols that are widely used on the web, such as HTTP, Restful, and Web Service. HTTP stands for Hypertext Transfer Protocol, which is the foundation of data communication on the web. HTTP defines how messages are formatted and transmitted, and what actions web servers and browsers should take in response to various commands. HTTP is a stateless protocol, which means that each request is independent and does not depend on any previous requests or responses. Restful stands for Representational State Transfer, which is an architectural style for designing web services that are based on the concept of resources. Restful web services use HTTP methods (such as GET, POST, PUT, and DELETE) to perform operations on resources, and use standard formats (such as JSON or XML) to exchange data. Restful web services are stateless, scalable, and cacheable, and aim to provide a uniform interface for interacting with different types of resources. Web Service is a generic term that refers to any software service that is available over the web and uses a standardized format for communication, such as SOAP or REST. Web Service allows different applications to communicate and exchange data across different platforms and languages. Web Service can be described using a specification language, such as WSDL or OpenAPI, which defines the structure, operations, and parameters of the service. Web Service can also be registered and discovered using a directory service, such as UDDI or Swagger.
NEW QUESTION # 36
Which of the following ports does RDS for MySQL listen on by default?
- A. Port 3600
- B. Port 3306
- C. Port 3060
- D. Port 8080
Answer: B
Explanation:
Explanation
The port 3306 is the default port on which MySQL is usually configured. This port is used by MySQL clients and applications to connect to the MySQL server. If you are using any other port, you should allow traffic to that specific port instead. Alibaba Cloud RDS for MySQL also uses this port by default, unless you specify a different port when creating the RDS instance. You can view and modify the port number of your RDS instance in the RDS console. References: How to configure an Amazon RDS environment for MySQL, Connecting to a DB instance running the MySQL database engine, [Create an ApsaraDB RDS for MySQL instance]
NEW QUESTION # 37
A video company uses SLB to distribute user requests to 20 ECS instances with the same configuration to response these requests. As the Spring Festival approaches, service traffic would double during holidays (based on past experience). Thus, you use Auto Scaling to elastically adjust computing resources. Since the services is online for many years, you have historic records that can help predict the upcoming service traffic and choose the scaling mode freely. In this scenario, which of the following options are feasible and with minimum operation efforts? (Number of correct answers: 2)
- A. Scheduled task: Increases the number of ECS instances to 40 on the first day of the holidays and reduce the number to 20 after the holidays.
- B. Healthy check mode: Ensures that all the current ECS instances in scaling groups are working correctly to meet user access requests.
- C. Manual mode: Set the minimum number of instances to 40 on the first day of the holidays and change the number to 20 after the holidays.
- D. Cloud monitor and event-triggered task: Dynamically adds ECS instances during resource shortage and reduces ECS instances during idle hours by monitoring the CPU utilization rate and workload
Answer: A,C
NEW QUESTION # 38
By using ApsaraDB for RDS to implement read/write splitting, which of the following can be achieved? (Number of correct answers 2)
- A. Write requests are distributed to multiple instances.
- B. Read/write requests to the database are separated.
- C. Read requests are distributed to multiple instances.
- D. Both read and write requests are distributed to multiple instance
Answer: A,D
NEW QUESTION # 39
Which of the following statements is most accurate about the Data Transmission Service (DTS) database migration function?
- A. Supports all of the above functions.
- B. Supports migrating MySQL databases from external sources.
- C. Supports database schema replication between instances.
- D. Supports warning when source and destination has some unresolved conflict found.
Answer: A
Explanation:
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
NEW QUESTION # 40
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 data. Which of the following Alibaba Cloud products can be used to quickly resolve this problem?
- A. Managed Security Service
- B. Cloud Firewall
- C. Security Center
- D. Anti-DDoS Pro Service
Answer: C
Explanation:
Explanation
Security Center is a centralized security management system that dynamically identifies and analyzes security threats, and generates alerts when threats are detected. Security Center provides multiple features to ensure the security of cloud resources and servers in data centers1. Security Center can help the company to quickly resolve its security problems by providing the following benefits:
Unified security management: Security Center automatically collects various log data from the company's services on the cloud, and implements control over found security threats. Security Center can also manage assets, attacks, vulnerabilities, and threats in the Security Center console2.
Proactive defense: Security Center supports the proactive detection and termination of mainstream ransomware, mining programs, backdoor programs, worms, malicious programs, DDoS trojans, and trojan programs. Security Center also prevents websites from being maliciously implanted with the acts that involve terrorism, politics, dark chains, trojans, and backdoors. This ensures the normal operation of web page information2.
Automated security operations: Security Center automatically traces the sources and causes of attacks.
This helps the company understand the ins and outs of intrusion threats and make quick responses. Security Center also supports custom alerts and third-party data migration to the cloud in a secure manner2. References: Security Center - Alibaba Cloud, Cloud Security- Alibaba Cloud, Introduction to Security Center - Alibaba Cloud Document Center
NEW QUESTION # 41
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Alibaba Cloud ACP-Cloud1 exam is a comprehensive test that covers a variety of topics related to cloud computing. It is designed to test the knowledge and skills of IT professionals who are looking to advance their careers in cloud computing. ACP-Cloud1 exam covers topics such as cloud architecture, deployment, security, and maintenance. It is a challenging test that requires a thorough understanding of cloud computing concepts and technologies.
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