(Generally speaking, as a network administrator, the usual work responsibilities are as follows: 1. Responsible for some installation and debugging operations (including rack jumpers) of the network of the computer system of the LAN users in the service area, so that the users can work normally. 2. Provide users with regular network protection services. 3. Manage network equipment in the service area, find faults, report and repair in time. 4. The administrator has the responsibility to check and prevent the improper use of network resources. 5. Back up important files in time to avoid the loss of information resources. 6. Monitor the system and conduct flow control to ensure the normal operation of the system and upgrade the operating system in time. 7. Do a good job of recording the job log)