Computing power of isomorphic network
Publish: 2021-03-23 09:47:09
1. There are many networks in the world. They usually use different hardware and software to connect to one network. People in one network often have to communicate with people in another network. In order to do this, those networks that are different from each other and usually not all inclusive must be able to connect. A group of interconnected networks is called Internet network or Internet, so choose D Internet
2. How long ago was the topic
router and gateway actually mean the same thing
gateway is called when routing function is realized by ordinary computer + software
router is called when routing function is realized by special hardware + special software
router and gateway actually mean the same thing
gateway is called when routing function is realized by ordinary computer + software
router is called when routing function is realized by special hardware + special software
3. This is not distinguished by isomorphism and isomerism. Generally speaking, homogeneous network protocols are common, and the compatibility of heterogeneous networks is problematic.
4. What are the characteristics of cloud server
how to ensure the safe, continuous and stable operation of enterprise data in information system is the most important problem faced by information management department
with the development of network, cloud procts are more and more popular with webmasters. What are the characteristics of cloud server
first, the operation and upgrade of cloud server is more convenient
traditional server resources are limited. If you want to get better skills, you can only upgrade the cloud server. The so-called "cloud" refers to the network and the Internet. Cloud server is a simple, efficient, safe and reliable processing capability. Scalable computing services. The operation is more convenient. If the original configuration is too low, you can upgrade the CPU, hard disk, memory, etc., without having to re install the system, and without affecting the previous use< Second, faster access to the cloud server
the cloud server is also known as the cloud host. The bandwidth used is usually multi line interworking. The network can automatically detect which type of network is faster, and automatically switch to the corresponding network for data transmission< Third, cloud server storage is more convenient
data can be backed up on the cloud server, so even if there are hardware problems, the data will not be lost. In addition, the use of cloud server only needs the normal maintenance of service providers in the later period, which solves a lot of worries for enterprises< Fourth, the security and stability of cloud server
cloud server is a kind of cluster server, which can virtualize many parts similar to independent server, and has high security and stability. In addition, the cloud server also supports the rapid reconstruction of different nodes. Even if the computing node is interrupted or damaged, the virtual machine can be reconstructed by other different nodes in a very short time without affecting the integrity of the data< 5. Cloud server has higher cost performance
cloud server pays on demand. Compared with traditional servers, cloud servers are more cost-effective and will not waste resources
of course, in addition to these remarkable features, it is more important to choose a well-known cloudeasy platform service provider to make the cloud server more simple and efficient and not cause unnecessary losses to the enterprise.
how to ensure the safe, continuous and stable operation of enterprise data in information system is the most important problem faced by information management department
with the development of network, cloud procts are more and more popular with webmasters. What are the characteristics of cloud server
first, the operation and upgrade of cloud server is more convenient
traditional server resources are limited. If you want to get better skills, you can only upgrade the cloud server. The so-called "cloud" refers to the network and the Internet. Cloud server is a simple, efficient, safe and reliable processing capability. Scalable computing services. The operation is more convenient. If the original configuration is too low, you can upgrade the CPU, hard disk, memory, etc., without having to re install the system, and without affecting the previous use< Second, faster access to the cloud server
the cloud server is also known as the cloud host. The bandwidth used is usually multi line interworking. The network can automatically detect which type of network is faster, and automatically switch to the corresponding network for data transmission< Third, cloud server storage is more convenient
data can be backed up on the cloud server, so even if there are hardware problems, the data will not be lost. In addition, the use of cloud server only needs the normal maintenance of service providers in the later period, which solves a lot of worries for enterprises< Fourth, the security and stability of cloud server
cloud server is a kind of cluster server, which can virtualize many parts similar to independent server, and has high security and stability. In addition, the cloud server also supports the rapid reconstruction of different nodes. Even if the computing node is interrupted or damaged, the virtual machine can be reconstructed by other different nodes in a very short time without affecting the integrity of the data< 5. Cloud server has higher cost performance
cloud server pays on demand. Compared with traditional servers, cloud servers are more cost-effective and will not waste resources
of course, in addition to these remarkable features, it is more important to choose a well-known cloudeasy platform service provider to make the cloud server more simple and efficient and not cause unnecessary losses to the enterprise.
5. Heterogeneous network. In the data link layer, Ethernet, FDDI and WiFi can be accessed. Each data link network is different. So it's heterogeneous
6. Cloud computing is a mode of increasing, using and delivering related services based on the Internet. It usually involves providing dynamic, scalable and often virtualized resources through the Internet. Cloud is a metaphor of network and Internet. In the past, cloud was often used to represent telecom network, and later it was also used to represent the abstraction of Internet and underlying infrastructure. Therefore, cloud computing can even let you experience the computing power of 10 trillion times per second. With such powerful computing power, you can simulate nuclear explosions, predict climate change and market trends. Users access the data center through computers, laptops, mobile phones and other ways, and calculate according to their own needs
there are many definitions of cloud computing. There are at least 100 explanations for what cloud computing is. What is widely accepted at this stage is the definition of National Institute of standards and Technology (NIST): cloud computing is a pay per use mode, which provides available, convenient and on-demand network access, and enters the configurable computing resource sharing pool (resources include network, server, storage, application software and services). These resources can be quickly provided, It requires little management or interaction with service providers<
features
cloud computing makes computing distributed on a large number of distributed computers instead of local computers or remote servers. The operation of enterprise data center will be more similar to that of Internet. This enables enterprises to switch resources to the applications they need, and access computers and storage systems according to their needs
it is like changing from the old single generator mode to the centralized power supply mode of power plant. It means that computing power can also be circulated as a commodity, just like gas, water and electricity, which is easy to use and low-cost. The biggest difference is that it is transmitted through the Internet< The characteristics of cloud computing that are generally accepted are as follows:
(1) super large scale
"cloud" has a considerable scale. Google cloud computing has more than 1 million servers, and Amazon, IBM, Microsoft, Yahoo and other "cloud" have hundreds of thousands of servers. Enterprise private cloud generally has hundreds of thousands of servers“ "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. The application runs somewhere in the "cloud", but actually users don't need to know and worry about the specific location of the application. Just need a laptop or a mobile phone, we can achieve everything we need through network services, even including tasks such as supercomputing
(3) high reliability
"cloud" uses fault tolerance of multiple copies of data, isomorphism and interchangeability of computing nodes to ensure high reliability of services. Cloud computing is more reliable than local computer
(4) generality
cloud computing is not specific to specific applications. It can construct a variety of applications under the support of "cloud", and the same "cloud" can support different applications running at the same time
(5) high scalability
"cloud" scale can be dynamically scaled to meet the needs of application and user scale growth
(6) on demand service
"cloud" is a huge resource pool, which you can buy on demand; Clouds can be charged like water, electricity and gas
(7) extremely cheap
e to the special fault-tolerant measures of "cloud", extremely cheap nodes can be used to form the cloud. The automatic centralized management of "cloud" enables a large number of enterprises not to bear the increasingly high cost of data center management. The universality of "cloud" greatly improves the utilization rate of resources compared with traditional systems, so users can fully enjoy the low-cost advantage of "cloud", It often takes only a few hundred dollars and a few days to complete tasks that used to take tens of thousands of dollars and a few months
cloud computing can completely change people's future life, but at the same time, we should also pay attention to environmental issues, so as to truly contribute to human progress, rather than simple technology upgrading
(8) potential danger
cloud computing services not only provide computing services, but also 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 organizations (especially those holding sensitive data such as banks) should be vigilant in choosing cloud computing services. Once commercial users use the cloud computing services provided by private organizations on a large scale, no matter how strong their technological advantages are, they will inevitably let these private organizations threaten the whole society with the importance of "data (information)". For the information society, "information" is crucial. On the other hand, the data in cloud computing is confidential for users other than the data owner, but there is no secret for the commercial organizations providing cloud computing. All these potential risks are an important premise that commercial institutions and government agencies have to consider when choosing cloud computing services, especially those provided by foreign institutions.
there are many definitions of cloud computing. There are at least 100 explanations for what cloud computing is. What is widely accepted at this stage is the definition of National Institute of standards and Technology (NIST): cloud computing is a pay per use mode, which provides available, convenient and on-demand network access, and enters the configurable computing resource sharing pool (resources include network, server, storage, application software and services). These resources can be quickly provided, It requires little management or interaction with service providers<
features
cloud computing makes computing distributed on a large number of distributed computers instead of local computers or remote servers. The operation of enterprise data center will be more similar to that of Internet. This enables enterprises to switch resources to the applications they need, and access computers and storage systems according to their needs
it is like changing from the old single generator mode to the centralized power supply mode of power plant. It means that computing power can also be circulated as a commodity, just like gas, water and electricity, which is easy to use and low-cost. The biggest difference is that it is transmitted through the Internet< The characteristics of cloud computing that are generally accepted are as follows:
(1) super large scale
"cloud" has a considerable scale. Google cloud computing has more than 1 million servers, and Amazon, IBM, Microsoft, Yahoo and other "cloud" have hundreds of thousands of servers. Enterprise private cloud generally has hundreds of thousands of servers“ "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. The application runs somewhere in the "cloud", but actually users don't need to know and worry about the specific location of the application. Just need a laptop or a mobile phone, we can achieve everything we need through network services, even including tasks such as supercomputing
(3) high reliability
"cloud" uses fault tolerance of multiple copies of data, isomorphism and interchangeability of computing nodes to ensure high reliability of services. Cloud computing is more reliable than local computer
(4) generality
cloud computing is not specific to specific applications. It can construct a variety of applications under the support of "cloud", and the same "cloud" can support different applications running at the same time
(5) high scalability
"cloud" scale can be dynamically scaled to meet the needs of application and user scale growth
(6) on demand service
"cloud" is a huge resource pool, which you can buy on demand; Clouds can be charged like water, electricity and gas
(7) extremely cheap
e to the special fault-tolerant measures of "cloud", extremely cheap nodes can be used to form the cloud. The automatic centralized management of "cloud" enables a large number of enterprises not to bear the increasingly high cost of data center management. The universality of "cloud" greatly improves the utilization rate of resources compared with traditional systems, so users can fully enjoy the low-cost advantage of "cloud", It often takes only a few hundred dollars and a few days to complete tasks that used to take tens of thousands of dollars and a few months
cloud computing can completely change people's future life, but at the same time, we should also pay attention to environmental issues, so as to truly contribute to human progress, rather than simple technology upgrading
(8) potential danger
cloud computing services not only provide computing services, but also 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 organizations (especially those holding sensitive data such as banks) should be vigilant in choosing cloud computing services. Once commercial users use the cloud computing services provided by private organizations on a large scale, no matter how strong their technological advantages are, they will inevitably let these private organizations threaten the whole society with the importance of "data (information)". For the information society, "information" is crucial. On the other hand, the data in cloud computing is confidential for users other than the data owner, but there is no secret for the commercial organizations providing cloud computing. All these potential risks are an important premise that commercial institutions and government agencies have to consider when choosing cloud computing services, especially those provided by foreign institutions.
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