Google Cloud Professional Cloud Network Engineer Practice Test

The primary function of Virtual Private Network (VPN) tunnels is to enable secure connections between networks. VPNs create an encrypted tunnel over the internet, which allows data to be transmitted securely between two or more networks. This is particularly useful for connecting remote users or branch offices to a central office network, ensuring that sensitive information remains confidential and protected from unauthorized access while traversing potentially insecure networks.

By establishing VPN tunnels, organizations can securely extend their internal networks across the public internet, maintaining the confidentiality and integrity of the data being exchanged. This capability is crucial for businesses that need to ensure secure communication for sensitive operations, data sharing, and overall network security.

In contrast, managing cloud billing, optimizing database access, and improving website performance do not relate to the core functionality of VPNs, which is centered around securing network communications rather than addressing financial management, database efficiency, or website speed.