classes:  lecturer. Network design is necessary for students to practice with real-life projects, reduce the case assumed, help shorten the work adaptation period after graduation.  curriculum. Network design is necessary for students to practice with real-life projects, reduce the case assumed, help shorten the work adaptation period after graduation.  facility. Network design is necessary for students to practice with real-life projects, reduce the case assumed, help shorten the work adaptation period after graduation.  general. Network design is necessary for students to practice with real-life projects, reduce the case assumed, help shorten the work adaptation period after graduation.