The network software of LAN mainly includes network operating system, network database management system and network application software. A network operating system is a software program that can replace the operating system. It is the heart and soul of the network and a special operating system that provides services to network computers. Network database management system is a large-scale software that manipulates and manages databases and is used to establish, use and maintain databases. Network application software refers to software that can provide various services to network users. It is used to provide or obtain shared resources on the network.
#The operating environment of this article: windows10 system, thinkpad t480 computer.
The network software of LAN mainly includes network operating system, network database management system and network application software.
The local area network consists of two parts: network hardware and network software. Among them, network software includes network operating systems, network database management systems and network application software.
Network operating system
The network operating system is a software program that can replace the operating system. It is the heart and soul of the network and provides services to network computers. Special operating system. Data and various messages are transferred to each other through the network, which is divided into Server and Client.
The main function of the server is to manage the sharing of various resources and network equipment on the server and network, integrate and control traffic, and avoid the possibility of paralysis.
The client has the function of receiving and using the data passed by the server, so that the client can clearly search for the required resources.
Network Database Management System
Database Management System (Database Management System) is a large-scale software that manipulates and manages databases and is used to establish , use and maintain database, referred to as DBMS. It provides unified management and control of the database to ensure the security and integrity of the database.
Users access data in the database through DBMS, and database administrators also perform database maintenance through DBMS.
It can support multiple applications and users to use different methods to create, modify and query the database at the same time or at different times.
Most DBMS provide data definition language DDL (Data Definition Language) and data manipulation language DML (Data Manipulation Language) for users to define the schema structure and permission constraints of the database and implement operations such as appending and deleting data. .
Network application software
Network application software refers to software that can provide various services to network users. It is used to provide or obtain shared resources on the network. Such as browsing software, transmission software, remote login software, etc.
Commonly used applications include: browsing software, transmission software, remote login software, etc.
Expand knowledge:
A local area network is naturally a regional network formed in a local area. Its characteristic is that the distribution area is limited and can be large or small. , as large as the connection between a building and an adjacent building, as small as the connection between offices. Compared with other networks, the LAN itself has faster transmission speed, more stable performance, simple framework, and closed nature, which is why many organizations choose it. The local area network itself is generally composed of computer equipment, network connection equipment, and network transmission media. Computer equipment includes servers and workstations, and network connection equipment includes network cards, hubs, and switches. Network transmission media is simply Network cable is composed of three major components: coaxial cable, twisted pair and optical cable.
A local area network is a private network, usually within or near a building, such as a home, office, or factory. Local area networks are widely used to connect personal computers and consumer electronic devices, allowing them to share resources and exchange information. When LANs are used in companies, they are called enterprise networks.
Local area network connects various computers, external devices and databases in a certain area to form a computer communication network, and connects to local area networks or databases in other places through dedicated data lines to form a larger information processing system. LAN connects network servers, network workstations, printers and other network interconnection devices through network transmission media to achieve system management files, share application software, office equipment, send work schedules and other communication services. The LAN is a closed network, which can prevent information leakage and external network virus attacks to a certain extent, and has high security. However, once an incident such as a hacker attack occurs, it is very likely to cause the entire LAN to be paralyzed, and all work within the network will be unable to do so. Conduct or even leak a large number of company secrets, causing serious damage to the company's business development. In 2017, the country promulgated the "Cybersecurity Law of the People's Republic of China", which officially came into effect on June 1. It clearly stipulates network security and information security from a legal perspective, and puts forward corresponding requirements for network operators and users. Improve the security of network use.
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