IT professional skills include: data flow control in network, which is the first problem to be solved in network management in computer network; Network routing strategy; Network security protection; Network fault diagnosis; Network cost management; Prevent network viruses and hackers;
These are just network-related skills, and there are many other applications. If you want to know more specifically, you can go to IT training institutions to consult professional teachers face to face, or you can attend classes on the spot.