(Teaching supporting book: "Network Engineering Principles and Practice Course (Second Edition)" People's Posts and Telecommunications Press, April 2008 It is directly used in the content catalog of teaching experiments: it seems that the master of up did not give the title of the experiment, so I posted it for you! Experiment 1. Twisted pair wiring engineering experiment 2. Multi-layer network topology drawing experiment 3. Windows2000 local area network management experiment 4. Intranet network use technology experiment 5. Cisco switch and router interconnection design experiment 6. Multi-layer switching technology design and use experiment 7. Router synthesis Design Experiment 7 Router Comprehensive Design (2) Experiment 8 Access Network Design and Configuration Experiment 9 CiscoPIX Firewall Configuration and DMZ Design Children's shoes in need can be seen!)