The user access security solution is an "end-to-end" security architecture. The user access security framework includes three key components: terminal equipment, network admission equipment and admission server.

Agile controller-Campus system can manage the software installed on the terminal, define the black and white list, and assist the terminal to install the necessary software and uninstall the software that is not allowed to be installed by linking with the access control device. The definition of the black and white list, which is correct?

Which of the following options is not a challenge brought by mobile office?

Regarding the identity authentication method and authentication type, which of the following descriptions is correct?

By default, the device file, there is a knowledge base file in device, during the upgrade, the device will automatically update the knowledge base files and backups.