"Come on, come on," Feng Xueshan came over at the right time with a small stove. Barbecue charcoal had been placed inside, and an iron mesh was set up on top. Zhou Zhi's backpack was slung on her back: "I have the ability to quarrel. I don't know. Give me a hand.”
Mai Xiaomiao put her foot down, and Feng Xueshan looked at her. Eye: "I didn't tell you."
Zhou Zhi stood up obediently, took the stove from Feng Xueshan's hand and set it up. He took off his schoolbag, opened it, and took out a pack of bamboo sticks wrapped in a plastic bag: "This is The specialties of Liangshan Prefecture are not available outside the autonomous prefecture. Now I know several wild hot springs in the mountains. When will they be available? When you come to Lianhe Township to play, I will take you there."
"No, the ultraviolet rays are too strong and I can't stand it." Feng Xueshan refused without raising her head and took the sign handed over by Zhou Zhi. Put it on the iron grid to heat: "I'm not as rough-skinned and thick-skinned as you."
Feng Xueshan's skin is indeed It is rare among girls, and they may not be able to withstand the strong ultraviolet rays in the autonomous prefecture. Zhou Zhi really did not expect this: "That's true, the ultraviolet rays in the prefecture are indeed too strong, but it is not useless at all. At least The fruit is growing well. Hey, what is this in the bag..."
"Give it back to me!" Mai Xiaomiao became excited when she saw the folder turned out in Zhou Zhi's hand.
"What is this..." Zhou Zhi ran to the side with the folder and signaled Feng Xueshan to stop Mai Xiaomiao. He opened the folder and found that it read on the cover: "Clover System Cluster Security Improvement Plan" ", but before I read the content, I was aggravated by the pictures below the text.
Under the words "Improvement Plan", there is a picture of elbows on a plate, with a cartoon-style pig's head on the side, and six words written on the side: "Big elbow, stupid pig head!"
“This is too much!” Zhou Zhi Showing the page of the folder: "This should be considered a personal attack, right?"
Feng Xueshan finally smiled when she saw the painting: "I entered her room before and found that the window was open and the person was gone. There is this on the table.”
Mai Xiaomiao had already slipped back onto the chair and covered her face with her hands in shame.
Zhou Zhi turned over the title page and discovered the important value of this information within a few pages.
Clover Group is a technology company. In order to achieve efficient communication between various departments and streamline human resources, its dependence on information systems can be said to have started before the group was born.
As an engineering management talent, Zhou Zhi is very skilled in the design of system architecture and considers it very comprehensively. However, he made a big mistake - that is, he adopted too many conventional solutions that seemed ordinary in later generations. , but ignores that such an advanced system will encounter many problems of mismatch between "productivity and production relations" in this era when computer networks have just started.
Although all members of the Clover Group are high-spirited and have used various methods to develop many new supporting products and finally realize Zhou Zhi's grand plan, the main focus is on " "How to achieve" above, for many details, it is impossible to invest too much energy.
For everyone who visits Clover Group, they are extremely envious to see that Clover can complete product research and development, human resources management, financial management, sales management, statistics, and tracking in its own large-scale integrated system. , inventory management, and even employee wages, benefits, attendance, and consumption in various internal consumption places can all be managed centrally.
Not only is the efficiency extremely high, the various statistical reports, supervision and verification that the entire group needs to use can be extremely convenient, which can be called a multiplier of corporate efficiency and profits.
Such a huge group cannot rely on just one system to complete these things. It can only complete various tasks through modularization, and then complete data sharing between various modules through relevant interfaces.
So Wheat Xiaomiao’s name for this large system of four-leaf clover is quite accurate - system cluster. Other enterprises, not to mention clusters, even lack single-function systems. The country is still vigorously calling on enterprises, institutions and government agencies at all levels to implement informatization as soon as possible and break away from paper and pen. It has not even dared to mention networking.
So Clover's system cluster has always been one of the model benchmarks for modern enterprises, and has been visited, admired and praised by people. It is the object of admiration and envy of everyone, and can even be said to be one of the few in the country. It is an achievement that Westerners can be proud of, so almost no one sees the other side of the matter and criticizes it from the negative side.
Mai Xiaomiao proved from his own practice that there are indeed huge hidden dangers in the Clover system cluster, and proposed solutions from a theoretical level. He also compiled a version of the security improvement plan and attached two paintings.
This plan is quite scientific and very feasible.
The plan is divided into three levels. The primary level is to patch some vulnerabilities on the existing basis, including firewall level, operating system level, and application system level. All need to be re-tested for attacks and upgraded. A security measure to fix various bugs, including the empty command sled bug that Mai Xiaomiao himself used to attack.
In fact, it is very simple to eliminate this problem. The basis of the sled attack is actually stack overflow. As long as the input and output information entering the stack is checked for length, and the stack is not allowed to overflow, it can be solved.
There are many loopholes in the system itself. The main reason is that the huge system makes BUG inevitable. Once they are discovered, it is very simple to plug them.
The intermediate solution is to improve the integration and standardization of the system cluster and eliminate the existence of system settings that violate logic such as "visitors with high permissions".
This requires a very clever algorithm to conduct a comprehensive diagnosis of the system cluster, which is very difficult to implement.
Because you have to teach the diagnostic program to run the basic constraints of all permissions, roles, and users in this system. When the system becomes complex to the level of a "cluster", the interleaving and interaction between the various systems will be superimposed. Make this matter so complicated that it becomes a mess.
And there is a lot of wrong logic mixed in here. The diagnostic program needs to diagnose whether it is correct or wrong in such a large mess of logical relationships. This is beyond thoughtfulness. Current academic level.
Of course he knows that there will be solutions in the future. Artificial intelligence and learning functions can allow the diagnostic program to complete iterations in the continuous learning process and finally meet the requirements.
But this solution is far from the current level of world information technology.
The solution proposed by Mai Xiaomiao is actually similar to the solution of later generations, but the diagnostic model she proposed is much simpler. It uses the nonlinear optimization theory that has been developed to develop a diagnostic model to allow diagnosis The model teases out the logical relationships in this system cluster, and then involves a large number of people in it, telling the diagnostic model whether it is correct logic or wrong logic, and telling the diagnostic model where such logical errors are wrong, ultimately allowing the diagnostic model to continuously Correct the results to achieve a satisfactory error detection rate.
This is actually a last resort alternative, which is to decompose complex nonlinear problems into relatively simple linear problem sets, and finally synthesize the answers to this linear problem set to approximate the nonlinear problem. Answer.
Such a processing method is destined that the answer will never be the ultimate answer to a real nonlinear problem, but it can be infinitely approximated. In engineering, this problem is actually solved.
Mai Xiaomiao's IQ can be seen from this incident alone, so she insisted on saying that she was a stupid pig with big elbows, but Zhou Zhi could only hold her nose and admit it. (End of chapter)