Job Recruitment Website - Recruitment portal - What books do I need to buy to recruit Unicom operation and maintenance?

What books do I need to buy to recruit Unicom operation and maintenance?

China Unicom Operation and Maintenance Personnel Post Training Series

Technology-related books, such as LTE/ optical transmission technology /5G, improve their business capabilities.

Books, Chinese characters. When it is used as a verb, it means writing and recording. Shuowen: "Book, Eight Lords." Also refers to painting; When used as a noun, it refers to books, letters, fonts, calligraphy and characters, as well as "six books" and imperial edicts. There is a folk art called "telling stories".