According to foreign media reports, the California Air Resources Board (CARB) has now found that there are more models in the Volkswagen Group that have fraudulent behavior in the exhaust emission test. Audi models have software for tampering with exhaust emissions data.
Surprisingly, this matter was not discovered recently, but four months ago, but Volkswagen Group, Audi, and CARB all chose to remain silent.
According to sources, the software is installed on the steering wheel of the car, which can identify whether the car is in the laboratory test stage or the real driving state.
After the car is started, if the software detects that there is no activity on the steering wheel, it will assume that the vehicle is in the laboratory test phase and will start the low-level mode of carbon dioxide emissions to get rid of the clearance.
When the steering wheel rotates more than 15 degrees, it will switch to the normal driving mode, and the carbon dioxide emissions will increase.
However, in the test conducted by CARB, the steering wheel rotation caused the cheating to fail, so Audi's fraudulent behavior was smashed out.
But somehow, the parties involved did not make it public, until now it was exposed by the media.
The data of the network management switch will be configured through the Simple Network Management Protocol (SNMP). The SNMP protocol is currently the most widely used network management protocol based on TCP/IP networks. It can perform data address, port, protocol type, service, etc. Filtering, usually also has a VLAN division function.
The network management switch product provides a variety of network management methods based on the terminal control port (Console), based on the Web page, and supports Telnet? Remote login to the network. Therefore, network administrators can perform local or remote real-time monitoring of the switch's working status and network running status, and manage the working status and working mode of all switch ports in a global view.
The task of the managed switch is to keep all network resources in good condition. The network management switch product provides a variety of network management methods based on the terminal control port (Console), based on the Web page, and supports Telnet to remotely log in to the network.
Managed Switches have three major indicators: the backplane bandwidth of the switch determines the upper limit of the connection bandwidth between each interface template and the switching engine; the switching capacity is the core indicator of managed switches; the packet forwarding rate determines the ability of the switch to forward data packets .
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