A large reward is offered to find a master translator, not machine translation

In this era of rapid development of computers, network technology is changing with each passing day. The role of computer technology in daily life is becoming more and more important, and it is increasingly inseparable from our lives. The ensuing network security and crisis also followed, for the security of the network, for our own interests, security issues have received more and more attention from us.

In some enterprises and small departments, some common network security settings are very necessary.

Virtual LAN and access control technology is a common network security setting in computer network, virtual LAN (VLAN) can divide the same enterprise into several different departments, each department can be managed separately, deployed separately, while the superior can manage the subordinate, the subordinate is limited by the superior network, this division is flexible, easy to manage, and the technology of free distribution has become an irreplaceable LAN network technology in our daily life.

We will explain some relevant knowledge of VLAN and ACL, let us understand VLAN, be familiar with the principle and related functions of VLAN, and apply it to the advantages in reality. At the same time, the principle and function of access control technology and the configuration method of access control technology on switches and routers are introduced.

In traditional Ethernet, all users share the same broadcast domain and collision domain, which will cause network performance degradation, and the emergence of switches solves the problem of collision domains, while the control of broadcast storms and network security can only be achieved through routers. In order to solve this problem, the devices in the LAN are logically divided into different subnets, allowing users in different geographical locations to join a logical subnet, and their respective broadcast streams will not be mutually aware. Devices in a network can be divided into VLANs by department, function, application, and so on.

After the VLAN is divided, the bandwidth consumed by broadcast packets in the network is reduced due to the shrinking of the broadcast domain, which helps to control the generation of broadcast storms, reduce equipment investment, simplify network management, and improve network performance and security.

With the deepening of the informatization construction of our hospital, there are more and more systems running in the hospital, and the number of computers connected to the network is also increasing, with the access of the student dormitory to the campus network, in order to control the broadcast storm and improve the network security, and control the security and rationality of the students' online environment, we need to carry out the application of access control technology to standardize the online behavior of students. With the continuous expansion of informatization, the popularization and application of various network application software, the computer network plays an increasingly important role in improving the efficiency of data transmission, realizing data centralization and data sharing, and the construction of network and information system has gradually become an important infrastructure for various tasks. In order to ensure the safe and efficient operation of all work, it is the basic premise to ensure the security of network information and the normal and smooth operation of network hardware and software systems, so the construction of computer network and system security is particularly important.

The manufacturer puts the necessary dosage to install the terminal processing skip to for verification. They have to mount terminals from the same many.

Spring. The various types must be available.

The manufacturer of the terminal springs presented a quality report to confirm this.

The precision of the space. This substitution validation. The manufacturer must know that he is responsible.

Part of the list of sockets includes all mounting accessories.

Drawings of the terminal springs.

The name of the company that is drawn and applied to the outlet.

Antennae gauge all necessary color pressure gauge or proofread color sample multimeter millivolts, accuracy ratio for + cable, probe tip power regulation adjustable current source and ammeter are accurate, accuracy ratio 1% suitable transfer plug cable welding.

The manufacturer proposes the necessary number of terminals without the installation of springs for the treatment of verification. They have to install terminals from the same batch.

Spring. Each type must be available.

The manufacturer of the end product has made a report on the quality of the springs, which is certified.

Dimensional accuracy. Validation of this alternative. The manufacturer must know that he is responsible.

Parts list of sockets, including all mounting accessories.

Drawings of terminal springs.

The company name of the drawing is applied to the socket.

All necessary color tables or proofread color samples for plug gauges.

Multimeter millivolt accuracy better than + cable and probe tips.

Adjustable power regulation, current source and ammeter, better than 1% accuracy for proper plug relay cable welding.