Which of the following is NOT a characteristic of a Virtual Private Network (VPN)?

A Virtual Private Network (VPN) is designed to provide secure and private communication over a

shared or public infrastructure. Key characteristics of VPNs include:​

Traffic Isolation: Each customer's traffic is kept separate from others, ensuring privacy and security.​

Shared Infrastructure: Service providers can support multiple VPNs over the same physical

infrastructure, optimizing resource utilization.​

Customization: VPNs can be tailored to meet the specific requirements of individual customers,

including security policies, routing, and quality of service.​

However, customer data is not altered as it traverses a VPN. Instead, VPNs employ encryption and

tunneling protocols to protect data integrity and confidentiality during transmission. The primary

goal is to ensure that data remains unchanged and secure from end to end.​

Reference: Nokia IP Networks and Services Study Guide – Chapter on VPN Services​