What is a complete description of the role of a computer operating system?

The role of the computer operating system: manage all software and hardware resources of the computer system, rationally organize the computer's work flow, so as to fully utilize the efficiency of computer resources, and provide users with a friendly interface for using the computer. The operating system can schedule various resource blocks of the computer system, including software and hardware equipment, data information, etc. The use of the computer operating system can reduce the intensity of manual resource allocation, reduce the user's intervention in computing operations, and reduce the computer's operational intervention. Intelligent work efficiency can be greatly improved.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

The complete description of the role of a computer operating system is: to manage all software and hardware resources of the computer system, rationally organize the work flow of the computer, so as to fully utilize the efficiency of the computer resources, and provide users with the ability to use the computer. friendly interface.

The operating system (English: Operating System, abbreviation: OS) is a set of interrelated systems that supervises and controls computer operations, uses and runs hardware and software resources, and provides public services to organize user interaction. software program.

The computing operating system can be said to be very important to the computer. From the user's perspective, the operating system can schedule various resource blocks of the computer system, including software and hardware equipment, data information, etc. , the use of computer operating systems can reduce the work intensity of manual resource allocation, reduce the user's intervention in computing operations, and the computer's intelligent work efficiency can be greatly improved.

Secondly, in terms of resource management, if multiple users jointly manage a computer system, there may be conflicts in the information sharing between the two users. In order to more reasonably allocate the various resource blocks of the computer and coordinate the various components of the computer system, it is necessary to give full play to the functions of the computer operating system and make optimal adjustments to the efficiency and degree of use of each resource block so that each user can All needs can be met.

Finally, with the assistance of computer programs, the operating system can abstractly handle various basic functions provided by computing system resources, display operating system functions to users in a visual way, and reduce the difficulty of using the computer.

Threats to operating system security and security reinforcement work

With the continuous development of computer networks and application technology, information system security issues People are paying more and more attention to it. Once the information system is damaged, users and units will suffer heavy losses. Effective protection of the information system is an urgent issue that must be faced and solved. Operating system security plays an important role in the overall security of the computer system. Strengthening the security reinforcement and optimization services of operating systems is a key link in achieving information system security.

Currently, the main threats to operating system security include system vulnerabilities, fragile login authentication methods, ineffective access control, computer viruses, Trojan horses, covert channels, system backdoor malicious programs and code infections, etc. Strengthen operations System security reinforcement work is the basis for the security of the entire information system.

Security hardening principle

Security hardening refers to the end host, server, and network equipment involved in the information system in accordance with the system security configuration standards and combined with the actual situation of the user information system. , databases, application middleware and other software systems for security configuration reinforcement, vulnerability repair and security equipment tuning. Through security reinforcement, the security of the information system can be reasonably strengthened, its robustness can be improved, and the difficulty of attacks and intrusions can be increased, which can greatly improve the security level of the information system.

Security hardening method

Security hardening mainly involves manually scanning the system for vulnerabilities, applying patches based on the scan results, strengthening account security, modifying security configurations, and optimizing access control. Strategies, adding security mechanisms and other methods to strengthen the system and plug system vulnerabilities and "backdoors" to complete the reinforcement work.

Security hardening process

Security hardening mainly includes the following links:

(1) Determine the scope of security hardening and collect the information that needs to be security hardened. The computer equipment, network, database and application middleware equipment involved in the system.

(2) Develop a security reinforcement plan based on the security level classification and specific requirements of the information system, using network security experience and vulnerability scanning technology and tools, and conduct computer operating systems, network equipment, database systems and Apply middleware systems to conduct security assessments, conduct comprehensive assessments of information systems from the inside and outside, check the current security status of these systems, formulate corresponding security reinforcement measures based on the current situation, and form a security reinforcement plan.

(3) Security hardening plan implementation Implement hardening according to the formulated security hardening implementation plan. After completion, conduct comprehensive testing and inspection of the hardened system to ensure that the hardening has no impact on system business, and fill in the hardening implementation record .

(4) Security hardening report output According to the security hardening implementation record, prepare the final security hardening implementation report, summarize the hardening work, and summarize the hardened projects, hardening effects, and remaining issues.

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