(Longteng Enterprise is a new IT enterprise with 300 employees. The enterprise has nearly 300 computers running windows2000XP. The enterprise is headquartered in Beijing, and has branches in Guangzhou and Shanghai. The headquarter has 4 departments of finance, R&D, production and sales. A branch enterprise is formed by three departments of sales, production and finance, and the headquarters is unifiedly managed by the existing simple network system, but the three parts of the local area network are only interconnected through the Internet, which cannot meet the needs of enterprise development. Networking, connecting Beijing, Guangzhou and Shanghai into a unified network system, using the unified exit of the Beijing head office to access the Internet Redesign and build the local area network of the Beijing head office, and carry out expansion and upgrade requirements: availability, security, reliability and scalability, Network system Not all offices have realized integrated wiring system, this project only includes network part and system part)
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