A company's computer network system is a complex structure of many interconnected components to transmit and share data and resources between computers and devices in the organization. The computer network system in the company is designed to ensure efficiency, security, and meet the business needs of the organization, while providing a safe and flexible working environment for employees.

 Below are the main elements typically found in a corporate computer network system:

1:  Basic network equipment:

• Router: Connects a company's internal network to an outside network, such as the Internet. The router manages traffic between the company network and other networks.

• Switch: Divides the internal network into smaller segments, helping to better manage network traffic and improve performance.
• Firewall: A security device that helps control the flow of data in and out of the network and protects the system from external threats.

• LAN (Local Area Network): A local area network connects computers and devices within a small area, usually within a building or an office.
• WAN (Wide Area Network): Connects LANs together, often over long distances, such as between company branches in different cities.
• VPN (Virtual Private Network): Creates a secure connection over the Internet between corporate networks or between an employee's personal computer and the corporate network, allowing remote work.