What is the employment direction of computer blockchain

3. It is not said that blockchain is good, but proved by facts. China Merchants Bank, Minsheng Bank, Ping An Bank, ant financial services, Wanda and other domestic giants have begun to pay attention to blockchain technology. It seems that the digital currency planned by the central bank will also use blockchain technology. Some large international enterprises or institutions have also paid attention to blockchain technology long ago. Of course, the most famous examples of blockchain technology are Ethereum, bitcoin and decent.

4.

blockchain (English: blockchain or block chain) is a kind of distributed database . You may have heard about bitcoin, which is the core technology. Blockchain is a series of data blocks generated by cryptography. Each data block contains the information of a network transaction, which is used to verify the validity of the information and generate the next block. In a popular concept, blockchain is an account that everyone can keep. In a company or organization, most people only have the right to keep accounts, while only a few people with professional training have the right to keep accounts. Of course, blockchain is not an account book in the traditional sense. It has the following three key points in technical principle: first, decentralization. In a network practicing blockchain technology, each computer covered by it can read and add records. From the perspective of account book, they are the people who keep accounts together, and there is no authoritative person to guide and correct them. Second, asymmetric encryption. Although everyone can remember this account, they will not be able to read it unless they are in the Bureau. Because, in the accounting process, everyone follows the unified encryption rules, but when reading, they must use their own unique decryption method. Therefore, although everyone keeps this constantly updated account, the part they can read is only the one they can decrypt, that is, the part related to themselves. Third, time stamp. That is, time stamp (English: timestamp), refers to the string or coded information used to identify the recorded time and date. Each block on the blockchain is arranged in sequence according to the time it is generated, and is confirmed by collective authentication. Moreover, previous records cannot be modified. Just like in an account, we can index and verify the previous content through the records after a point in time. Once these contents are confirmed, it will be more difficult to tamper with them

blockchain technology is to maintain a growing distributed database of data records. These data are associated with all the data written before through cryptography technology, which makes it difficult for the third party or even the owner of the node to tamper with. Block contains the data that need to be saved in the database, and these data are written into the database through block organization. Chain usually refers to the use of Merkle tree and other methods to check whether all the current blocks have been modified. This is familiar to code farmers who have used git for a long time. Recall how to modify git's history

blockchain technology is mainly divided into three categories, which are open, collaborative and private

public blockchain

example: bitcoin, Ethereum frontier. The data on the public blockchain can be accessed by all people, and all people can issue transactions waiting to be written into the blockchain. Participants in the consensus process (corresponding to the miners in bitcoin) maintain the security of the database through cryptography technology and built-in economic incentives. Open blockchain is completely distributed

highlights and pain points: the open blockchain is completely distributed and has all the characteristics of bitcoin. However, it needs sufficient cost to maintain the system operation and relies on built-in incentives. At present, only bitcoin in the public blockchain is safe enough. If the algorithm is the same as bitcoin, it will be safe; There are no built-in rewards, but they are not; It's easy to concentrate on the attack of computing power (for example, as long as the raid sweeps goods and a large number of graphics cards), and take jujube pills. The more valuable the data on the open blockchain is, the more important it is to examine its security, transaction cost and system scalability

federated blockchain

example: audit system tried by hyperledger and Deloitte. The nodes participating in the blockchain are selected in advance, and there is likely to be a good network connection between the nodes. Other consensus algorithms without workload proof can be used on such a blockchain. For example, a blockchain has been established among 100 financial institutions, and more than 67 institutions must agree to reach a consensus. The data on such a blockchain can be public or internal to these node participants. Distributed in a partial sense

highlights and pain points: collaborative blockchain can achieve a good connection between nodes, only need a little cost to maintain operation, provide rapid transaction processing and low transaction costs, has good scalability (but the scalability will decline with the increase of nodes), and data can have certain privacy. Developers have the ability to change the protocol under the consensus. There is no problem with bitcoin hard fork, but it also means that everyone can tamper with the data together under the consensus. Collaborative blockchain also means that the application scope of this blockchain will not be too wide, lacking the network propagation effect of bitcoin

private blockchain

example: Eris instries. The participating nodes are only users themselves, and the access and use of data have strict authority management. Most of the blockchain technologies recently announced by some financial institutions for internal use are vague, but they are probably all within this scope

highlights and pain points: private blockchain is actually a confusing term. Such a system is nothing more than a shared database in the traditional sense. Merkle tree and other methods are used to try to show that the data in it is verifiable. There are already mature solutions for such databases, and Merkle tree is only one of many mature solutions. It's easy for these projects to be "like eggs". Because the user has the final say, the data inside can not be changed, and there is not much protection for the third party. Therefore, many private blockchains exist by attaching to bitcoin, such as recording system snapshots to bitcoin regularly

5. The most stable is always the current version of high-grade stone, which is burning iron and black and white ore
recommended map: ordham goes around the top half of the mountain, and twilight heights digs around the river from the harbor. And deep rock abyss.. Forget) this map has two ore circles, the inner circle and the outer circle. There's almost no iron burning on this map. It's all black and white. If no one digs, the profit is not as good as the first two. If there are too many people, you can go here to dig. If there are few people, the place is big.

the price of low-grade ores is different on each server. You have to watch ah often. Silver mine must be expensive, but it's usually not found, so you don't need to dig it. Silver is certainly the least valuable, but it is accompanied by arcane crystal. One can sell about 100g, mainly distributed in hilisus, crater and winter spring valley. It depends on market demand. For example, when do magic or orange hammer suddenly more, black iron will greatly increase the price. Watch carefully
pure hand fight, hope to adopt, thank you

6. Blockchain technology is the underlying technology of bitcoin. Blockchain technology is closely related to cryptography. However, if you are a non computer major, you can understand it at first. However, if you want to go deep, you may need to know a lot of computer related knowledge, such as database, distributed technology and so on. Specifically, if you are interested, You can refer to this paper, "an overview of blockchain Technology: architecture, consensus, and future trends" artificial intelligence technology, which involves many algorithms and has high requirements for mathematics! Also need learners to have a certain understanding of computer. The above two, need for a certain understanding of computer science, but nothing is difficult in the world, just afraid of people, if you want to learn, it is certainly possible.

7. The professional goal of this major is mainly located in the middle and low positions in each position group that require skilled professional skills and higher technology application ability. At the same time, the major should teach students in accordance with their aptitude, carry out the student innovation project, encourage students to participate in various skills competitions, strive to obtain CCIE, CIW and other senior and even international top it professional qualification certificates, and achieve the good effect of low in and high out talent training, so that some students with strong ability can get senior positions
pre sale, sale and after-sale are three different stages in the life cycle of information construction. There is no great difference in personnel, equipment and technology, and the requirements of post and ability are common. Types of employment units: system integration, network engineering construction and service enterprises; Information engineering supervision enterprise; Software development, consulting and service enterprises; Information security proct development, information security strategy consulting and security protection service enterprises; It equipment, software and information security procts sales and technical services enterprises; Government and general enterprises and institutions (only it Department)
major employment departments: marketing department, engineering department, development department, after-sales service department, system maintenance department and information technology department
jobs available: system administrator, network administrator, pre-sale and after-sale technical support, on-site technical support engineer, security assistant, web page designer, website maintainer, programmer, information engineering administrator, information engineering supervisor, information administrator, database administrator, constructor, tester, etc.

8. First of all, from the perspective of the current development trend, with the implementation of a series of technologies such as big data, cloud computing, artificial intelligence and blockchain, the talent demand potential of computer related majors in the future is still very large. Moreover, under the background that the instrial Internet has graally become a new driving force for the development of traditional instries, the choice of computer related majors is also a choice to comply with the development of the times

although the overall employment prospect of computer major is relatively broad, the current it Internet field, as well as the traditional instry field, also put forward new requirements for computer professionals, and the talent demand trend has also undergone some changes, which are mainly concentrated in the following aspects:

First: the demand potential of high-end application-oriented talents is relatively large. Driven by the upgrading of the current instrial structure, the demand for high-end application-oriented talents is increasing. With the implementation of cloud computing, big data, Internet of things, artificial intelligence and other technology platforms, the demand potential for high-end application-oriented talents is still very large. At present, professional master is one of the main channels to cultivate high-end application-oriented talents, and the current training scale of professional master is expanding, so students majoring in computer can focus on reading a professional master

Second, the potential demand for talents in the field of new technology is relatively large. At present, large technology companies have begun to lay out in cloud computing, big data, artificial intelligence and other fields, and these new technology fields will graally build a new technology ecology, so the instry will need a large number of professionals who master these new technologies. For students who have no postgraate plan, mastering these new technologies will significantly improve their job competitiveness

thirdly, the demand potential of full stack talents is relatively large. The era of instrial Internet is a platform era, which requires technical personnel to complete instry innovation based on technology platform. At this time, the instry will need technical personnel with more comprehensive technical ability, and full stack talents will be more popular

I have been engaged in the Internet instry for many years. At present, I am also a graate student majoring in computer science. My main research direction is in the field of big data and artificial intelligence. I will continue to write some articles on Internet technology. If you are interested, you can pay attention to me. I believe you will get something.