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Alibaba Cloud ACP-Cloud1 Exam Syllabus Topics:

Topic	Details
Topic 1	Able to use ECS, Server Load Balancer and OSS products in a VPC and implement application solutions Familiar with Auto Scaling features, product advantages and common application scenarios
Topic 2	Has basic security awareness and security basics of using Cloud services Familiar with the usage and operations of ECS instances, disks, security groups, snapshots, images and tags
Topic 3	Has knowledge about the advantages, application scenarios and billing models of OSS products Able to implement application solutions based on Server Load Balancer as well as ECS and Auto Scaling products
Topic 4	Familiar with VPC-related concepts, including VPCs, Vrouters, Vswitches, route tables, and route entries Able to implement application solutions based on OSS as well as ECS, CDN and ApsaraVideo for Media Transcoding

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Alibaba Cloud ACP Cloud Computing Professional Sample Questions (Q118-Q123):

NEW QUESTION # 118
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. HTTP
B. PPPoE
C. Restful
D. Web Service

Answer: B

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 # 119
If users use Alibaba Cloud Anti-DDoS Basic service, when the attack traffic exceeds the service upper limit, the black hole policy will then be triggered; after that, the users' servers can still provide services at a limited speed.

A. FALSE
B. TRUE

Answer: A

Explanation:
When the black hole policy is triggered by excessive DDoS traffic, the affected server is temporarily isolated from the network to prevent further damage. During this period, no services are available, meaning the server cannot provide limited-speed services.

NEW QUESTION # 120
Which of the following statements is most accurate about the Data Transmission Service (DTS) database migration function?

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

Answer: C

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 # 121
Which of the following statements is NOT correct, when comparing RDS with a self-built database?

A. 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.
B. RDS requires no O&M while self-built database require a dedicated DBA for maintenance, which results in high HR costs.
C. Self-built database support quick deployment and elastic scaling.
D. 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.

Answer: C

Explanation:
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. References: = ApsaraDB for RDS vs. Self-built Databases - Alibaba Cloud

NEW QUESTION # 122
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 requests are distributed to multiple instances.
C. Read/write requests to the database are separated.
D. Both read and write requests are distributed to multiple instance

Answer: B,C

Explanation:
Explanation
ApsaraDB for RDS is a stable and reliable online database service that supports MySQL, SQL Server, PostgreSQL, MariaDB, and PPAS. ApsaraDB for RDS provides a read/write splitting feature that allows you to create read-only RDS instances, which can offload read requests from the primary RDS instance of your database system1. Read/write splitting is implemented by using a dedicated proxy endpoint, which routes read and write requests to different RDS instances based on the SQL statements and the read weights of the read-only instances2. By using ApsaraDB for RDS to implement read/write splitting, you can achieve the following benefits21:
Read requests are distributed to multiple instances. This can improve the read performance and availability of your database system, as well as balance the load among the read-only instances. You can specify the read weights of the read-only instances to control the distribution of read requests.
Read/write requests to the database are separated. This can reduce the pressure on the primary RDS instance and ensure the stability and security of the write operations. You only need to connect to the proxy endpoint, and the proxy will automatically route the read and write requests to the appropriate RDS instances.
The other statements are not correct, as write requests are not distributed to multiple instances, but only sent to the primary RDS instance2; and both read and write requests are not distributed to multiple instances, but separated by the proxy endpoint2. References: [ApsaraDB for RDS - Alibaba Cloud], Read/write splitting - - Alibaba Cloud Documentation Center, Use the read/write splitting feature to increase the processing capability of an ApsaraDB RDS instance

NEW QUESTION # 123
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Get the Alibaba Cloud ACP-Cloud1 Certification to Boost Your Professional Career

Alibaba Cloud ACP-Cloud1 Exam Syllabus Topics:

ACP-Cloud1 Dumps Discount, ACP-Cloud1 Reliable Exam Preparation

Alibaba Cloud ACP Cloud Computing Professional Sample Questions (Q118-Q123):