CompTIA SecurityX (CAS-005) — Question 189

An organization decides to move to a distributed workforce model. Several legacy systems exist on premises and cannot be migrated because of existing compliance requirements. However, all new systems are required to be cloud-based. Which of the following would best ensure network access security?

Answer options

• A. Utilizing a VPN for all users who require legacy system access
• B. Shifting all legacy systems to the existing public cloud infrastructure
• C. Configuring an SDN to block malicious traffic to on-premises networks
• D. Deploying microsegmentation with a firewall acting as the core router

Correct answer: A

Explanation

The correct answer is A because utilizing a VPN ensures secure access for users who need to connect to legacy systems while maintaining compliance. Answer B is incorrect as moving legacy systems to the cloud would violate compliance requirements. Option C does not specifically address access security for users needing legacy access, and option D, while enhancing security, does not directly ensure secure access for those users.