Google Cloud Professional Cloud Security Engineer Practice Exam

What configuration should be used to ensure that on-premises applications only access Google APIs through Cloud Interconnect?

1. Use public internet addresses for API access

2. Use restricted googleapis.com addresses through Cloud Interconnect

3. Configure a VPN for API access

4. Use a firewall rule to block public internet access

The correct answer is: Use restricted googleapis.com addresses through Cloud Interconnect

Using restricted googleapis.com addresses through Cloud Interconnect is the appropriate configuration to ensure that on-premises applications can only access Google APIs securely and efficiently. This option takes advantage of the private, direct connection provided by Cloud Interconnect, which allows for a secure and high-performance link between on-premises networks and Google's cloud services. By restricting access to specific Google API addresses, organizations can enforce better control over their data transmission and ensure that API access is routed through the private interconnect rather than the public internet. This approach enhances security by minimizing exposure to potential threats that exist over the public internet. It also improves network performance due to higher bandwidth and lower latency compared to traditional internet pathways. Other options such as using public internet addresses or setting up a VPN do not provide the same level of security or performance as Cloud Interconnect, and relying solely on firewall rules to block public internet access may not be sufficient since it does not inherently provide the same private connection benefits.