CompTIA Updated SY0-701 Exam Questions and Answers by tadhg

Software-defined networking (SDN) enables microsegmentation by allowing administrators to create fine-grained, dynamic network segments at the software layer independent of physical network topology. This capability isolates workloads and controls traffic flows between segments, enhancing security within data centers and cloud environments.

Next-generation firewalls (A) provide advanced filtering and inspection but do not inherently deliver the granular segmentation flexibility of SDN. Embedded systems (C) and air-gapped systems (D) refer to specific hardware or physical isolation techniques but do not implement microsegmentation as a network control method.

The concept of microsegmentation through SDN is detailed in the Security Architecture domain of the SY0-701 exam【6:Chapter 3†CompTIA Security+ Study Guide】.

The first step in creating an anomaly detection process is building a baseline of normal behavior within the system. This baseline serves as a reference point to identify deviations or anomalies that could indicate a security incident. By understanding what normal activity looks like, security teams can more effectively detect and respond to suspicious behavior.

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CompTIA Security+ SY0-701 Course Content: Domain 04 Security Operations​.

CompTIA Security+ SY0-601 Study Guide: Chapter on Monitoring and Baselines​.

To enhance security for a system running an end-of-life operating system, placing the system in an isolated VLAN is the most effective approach. By isolating the system from the rest of the network, you can limit its exposure to potential threats while maintaining its functionality. This segmentation helps protect the rest of the network from any vulnerabilities in the outdated system.

Installing HIDS (Host-based Intrusion Detection System) can help detect intrusions but won ' t mitigate the risks posed by an unsupported OS.

Decommissioning may not be feasible if the system is critical.

Encrypting the system ' s hard drive protects data at rest but doesn ' t address vulnerabilities from an outdated OS​​​.

The correct answer is Air-gapped because this architecture deliberately isolates systems from external and internal networks to prevent any direct electronic communication. In the Security+ SY0-701 domain of Security Architecture, air-gapped environments are used to achieve the highest level of protection against network-based threats by physically or logically separating critical systems from untrusted networks such as the internet or even the organization’s internal network.

In this scenario, the CIO requires that network devices cannot connect to the public internet or the local network for firmware updates, and that updates must be performed manually using a portable device. This is a defining characteristic of an air-gapped architecture. Air-gapped systems rely on controlled, manual transfer methods—such as USB drives or other removable media—to introduce updates, ensuring that malware, remote exploits, and supply-chain-based network attacks cannot reach the isolated systems through traditional network paths.

Option A, Microservices, refers to an application design model where software is built as loosely coupled services and does not address physical or logical network isolation. Option C, Software-defined networking, focuses on centralized and programmable network control, not network disconnection. Option D, Serverless, is a cloud computing model where infrastructure management is abstracted away from developers and is incompatible with isolated, offline environments.

The SY0-701 study guide highlights air-gapped architectures as common in high-security environments such as industrial control systems, military systems, financial infrastructure, and environments requiring maximum protection against zero-day exploits and remote compromise. While air-gapping introduces operational overhead and update delays, it significantly reduces attack surface and exposure to external threats.

In summary, an architecture that requires manual updates via portable media and prevents any direct network connectivity is best described as air-gapped, making option B the correct answer.