云计算特征有专用性吗(云计算种类的广泛性)

The characteristics of cloud computing are as follows:\x0d\x0a　 (1) Ultra-large scale\x0d\x0a "Cloud" has a considerable scale. Google Cloud Computing already has more than 1 million servers, Amazon, IBM, Microsoft, Yahoo and other "clouds" each have hundreds of thousands of servers. Enterprise private clouds generally have hundreds or thousands of servers. "Cloud" can give users unprecedented computing power. \x0d\x0a　 (2) Virtualization\x0d\x0a　 Cloud computing supports users to obtain application services at any location and using various terminals. The requested resources come from the "cloud" rather than a fixed tangible entity. The application runs somewhere in the "cloud", but users don't actually need to know or worry about the specific location where the application is running. With just a laptop or a mobile phone, everything we need can be achieved through network services, even tasks such as supercomputing. \x0d\x0a　(3) High reliability\x0d\x0a　"Cloud" uses measures such as multiple copies of data, fault tolerance, and isomorphic interchangeability of computing nodes to ensure high reliability of services. Using cloud computing is more reliable than using local computers. \x0d\x0a　(4) Versatility\x0d\x0a　Cloud computing is not targeted at specific applications. With the support of the "cloud", ever-changing applications can be constructed, and the same "cloud" can support the operation of different applications at the same time. \x0d\x0a　(5) High scalability\x0d\x0a　The scale of the "cloud" can be dynamically expanded and contracted to meet the needs of the growth of application and user scale. \x0d\x0a　(6) On-demand services\x0d\x0a　"Cloud" is a huge resource pool that you purchase on demand; the cloud can be billed like tap water, electricity, and gas. \x0d\x0a　(7) Extremely cheap\x0d\x0a Due to the special fault-tolerance measures of the "cloud", extremely cheap nodes can be used to form a cloud. The automated and centralized management of the "cloud" eliminates the need for a large number of enterprises to bear the burden of increasingly expensive data center management. Cost, the versatility of "cloud" greatly improves resource utilization compared with traditional systems, so users can fully enjoy the low-cost advantages of "cloud". It often only takes a few hundred dollars and a few days to complete what previously required tens of thousands of dollars. dollars and months to complete. \x0d\x0a　Cloud computing can completely change people's lives in the future, but at the same time, we must also pay attention to environmental issues, so that we can truly contribute to human progress, rather than simply improve technology. \x0d\x0a　 (8) Potential dangers\x0d\x0a In addition to providing computing services, cloud computing services must also provide storage services. However, cloud computing services are currently monopolized in the hands of private institutions (enterprises), and they can only provide commercial credit. Government agencies and commercial institutions (especially commercial institutions that hold sensitive data like banks) should be wary of choosing cloud computing services. Once commercial users use cloud computing services provided by private organizations on a large scale, no matter how strong their technical advantages are, these private organizations will inevitably hold the entire society hostage with the importance of "data (information)." For the information society, "information" is crucial. On the other hand, data in cloud computing is confidential to cloud computing users other than the data owner, but there are really no secrets to the commercial organizations that provide cloud computing. All these potential dangers are an important prerequisite that commercial institutions and government agencies must consider when choosing cloud computing services, especially cloud computing services provided by foreign institutions.

[Answer]: D
Cloud computing is a large-scale centralized service model: the server can be accessed through the network Lattice computing integrates a large number of low-end computers and storage resources to provide high-performance computing capabilities, storage services, applications, and security management; clients can dynamically apply for computing, storage, and application services as needed, reducing the cost of hardware and While reducing development and operation and maintenance costs, it greatly expands the client's processing capabilities. New version of chapter exercises, pre-test papers, complete high-quality question bank + candidate note sharing, real-time updates, software, cloud computing features: ultra-large scale, virtualization, high reliability, versatility, high scalability, on-demand services, price Cheap and potentially dangerous.

The characteristics of cloud computing include:
1. Ultra-large scale
Cloud computing has a considerable scale, and enterprise private clouds generally have hundreds or thousands of units. server. "Cloud" can give users unprecedented computing power.
2. Virtualization
Cloud computing supports users to obtain application services at any location and using various terminals. The requested resources come from the "cloud" rather than a fixed tangible entity. With just a laptop or a mobile phone, everything we need can be achieved through network services, even tasks such as supercomputing.
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3. High reliability
“Cloud” uses measures such as multiple copies of data, fault tolerance, and isomorphic and interchangeable computing nodes to ensure services. High reliability, using cloud computing is more reliable than using local computers.
4. Versatility
Cloud computing is not targeted at specific applications. With the support of "cloud", ever-changing applications can be constructed, and the same "cloud" can support them at the same time. Different applications run.
5. High scalability
The scale of "cloud" can be dynamically expanded to meet the needs of the growth of application and user scale.
6. On-demand services
The "cloud" is a huge resource pool that you purchase on demand; the cloud can be billed like tap water, electricity, and gas.
7. Extremely cheap
Due to the special fault-tolerant measures of the "cloud", extremely cheap nodes can be used to form a cloud. The automated centralized management of the "cloud" eliminates the need for a large number of enterprises to To bear the increasingly high cost of data center management, the versatility of the "cloud" greatly improves resource utilization compared with traditional systems, so users can fully enjoy the low-cost advantages of the "cloud".