What Remote Access System Uses a Public IP and ACL?
A network manager wants to set up a remote access system for the engineering staff. Access to this system will be over a public IP and secured with an ACL. Which of the following best describes this system?
Community Votes
100% of anonymous learners picked answer A. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
Examines the distinction between general secure protocols and dedicated remote access infrastructure, with candidates often confusing VPNs with jump servers or SSH gateways.
This question tests your understanding of enterprise remote access solutions that leverage public IPs and Access Control Lists (ACLs) for traffic filtering. The community overwhelmingly agrees that a Virtual Private Network (VPN) is the correct answer, as it securely tunnels remote users into the corporate network.
Jump server (C) is frequently chosen because it also provides controlled public access, but it acts as a single hardened host rather than a scalable remote access system designed for multiple staff members using ACL-based traffic segmentation.
Community Discussion (4 comments)
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Expert Analysis
Why the Answer Is Correct
A VPN is explicitly designed to provide secure, encrypted remote access across public networks. When deployed with a public IP address and configured with ACLs, it filters inbound connection attempts and routes authenticated traffic safely into the private LAN. CompTIA Network+ emphasizes VPNs as the standard solution for scalable, policy-driven remote workforce connectivity.Why the Other Options Are Wrong
Secure Shell (B) offers encrypted command-line access but lacks the tunneling capabilities and centralized user management required for an organization-wide remote access system. A jump server (C) serves as a single bastion host for administrative access rather than a dedicated remote access gateway for engineering staff. An API (D) facilitates software communication and has no role in network-level remote access provisioning.Community Comment Notes
Comment [1] and [2] highlight that a VPN concentrator aligns perfectly with public IP exposure and ACL configuration for group access. Candidates note that while SSH and jump servers provide security, they do not scale as a unified remote access platform. The consensus reinforces that VPN remains the foundational technology tested for this use case.Official Reference
Exam Strategy
When encountering "remote access over a public IP," immediately prioritize VPN or remote access gateway concepts over endpoint protocols like SSH. Focus on keywords like "system," "staff," and "ACL," which point toward scalable infrastructure rather than single-host or application-layer tools.