Geofencingallows the device to be restricted based on its physical location - disabling or locking devices when they move outside of trusted zones.Full disk encryptionensures that if a device is lost, the data remains inaccessible to unauthorized users. Containerization protects specific apps or data, but does not disable the entire device. Patch management, allow/blocklists, and geotagging serve other important functions but are not directly linked to the requirements in this scenario.
Reference:CompTIA SecurityX CAS-005, Domain 3.0: Implement mobile device security, including encryption and location-based access controls like geofencing.

Automating compliance in cloudenvironments requires a tool that can enforce configurations, manage infrastructure as code, and align with industry standards (e.g., NIST, ISO). Let's evaluate:
A). Jenkins:A CI/CD tool for automating software builds and deployments. It's not designed for compliance enforcement or infrastructure management.
B). Python:A programming language that can be scripted for automation but lacks built-in compliance-focused features without significant custom development.
C). Ansible:An automation tool for configuration management, application deployment, and compliance enforcement. It uses playbooks to define desired states, making it ideal for automating compliance checks and remediation in cloud environments (e.g., AWS, Azure). CAS-005 emphasizes automation tools for security and compliance, and Ansible fits perfectly.
Reference:CompTIA SecurityX (CAS-005) objectives, Domain 3: Security Engineering and Cryptography, focusing on automation for compliance in cloud environments.

To secure the Operational Technology (OT) environment based on the given requirements, the best approach is to implement a bastion host in the OT network. The bastion host serves as a secure entry point for remote access, allowing third-party vendors to connect while being monitored by security tools. Using a dedicated update server for workstations ensures that security updates are applied in a controlled manner without direct internet access.
References:
* CompTIA SecurityX Study Guide: Recommends the use of bastion hosts and dedicated update servers for securing OT environments.
* NIST Special Publication 800-82, "Guide to Industrial Control Systems (ICS) Security": Advises on isolating OT networks and using secure remote access methods.
* "Industrial Network Security" by Eric D. Knapp and Joel Thomas Langill: Discusses strategies for securing OT networks, including the use of bastion hosts and update servers.

The question focuses oninternet-facing hosts, implying external exposure. CVSS scores, remote executability, and exploitavailability guide prioritization. Server2 (205.1.3.5, CVSS 6.5, Bind Server) has a public IP, suggesting it's internet-facing, unlike Server1 and Server4 (192.168.x.x, private IPs). Server3 (207.1.5.7, CVSS 5.5) is also public but has a lower score and risk compared to Server2's proof-of-concept (POC) exploit. Server2's Bind Server (DNS) role is critical and commonly targeted, making it the priority.
Option A:Server1 (CVSS 7.5) is private, not internet-facing.
Option B:Server2 (CVSS 6.5) is internet-facing with an exploit POC, warranting immediate patching.
Option C:Server3 (CVSS 5.5) is internet-facing but less severe.
Option D:Server4 (CVSS 9.8) is critical but private, not internet-facing.
Reference:CompTIA SecurityX CAS-005 Domain 1: Risk Management - Vulnerability Prioritization.