A company wants to set up a new department using private cloud resources. The new department needs access to sales and financial data, but it should be prohibited from accessing human resources data.

A VSAN (Virtual Storage Area Network) is used for segmenting storage resources, not for controlling network access or isolating departmental traffic.

A Virtual Local Area Network (VLAN) provides logical segmentation of a network, allowing traffic from the new department to be isolated from human resources data. This network isolation ensures that while sharing physical infrastructure, access controls can be enforced to prevent unauthorized data access.

GRE (Generic Routing Encapsulation) is a tunneling protocol for encapsulating network packets, not a primary method for internal departmental network segmentation or access control.

A VPN (Virtual Private Network) is primarily used for secure remote access or site-to-site connectivity over public networks, not for internal segmentation within a private cloud environment.