Question

Difficulty: MediumSecure Network Design and Segmentation

An enterprise network security architect is updating the organization's network architecture to enhance isolation and access control. Match each network design or segmentation technique on the left with its corresponding enterprise implementation requirement on the right.

  • Air GapPhysically disconnecting a highly sensitive system completely from all internal and external network infrastructure.
  • MicrosegmentationEnforcing granular, software-defined firewall policies between individual virtual machine workloads to restrict lateral East-West traffic.
  • Jump BoxProviding a single, audited intermediate system for administrators to initiate managed connections into a restricted network zone.
  • Screened SubnetPlacing public-facing services in an isolated perimeter network segment located between two security control boundaries.

Answer

Air Gap pairs with physical separation from all networks; Microsegmentation pairs with software-defined lateral policy enforcement; Jump Box pairs with a secure, audited administrative access gateway; Screened Subnet pairs with isolating public-facing services between security boundaries.
The concepts correctly align with their standard technical definitions: Air Gaps mandate complete physical isolation; Microsegmentation restricts East-West lateral traffic at the workload level via software policies; Jump Boxes act as secure intermediate administrative access points; and Screened Subnets isolate public-facing assets between perimeter firewalls.

Step-by-Step Solution

1
Identify absolute isolation without network medium connectivity.
Air Gap corresponds to complete physical network disconnection.
Air-gapping ensures no data can cross network media electronically.
2
Determine granular lateral traffic controls in virtualized environments.
Microsegmentation corresponds to controlling East-West traffic between individual workloads.
Microsegmentation operates at fine granularity using software-defined security policies.
3
Locate administrative transit control requirements.
Jump Box corresponds to the intermediate secure gateway for administration.
Jump hosts centralize management authentication and session auditing.
4
Evaluate perimeter placement for externally exposed services.
Screened Subnet corresponds to placing public-facing services between security boundaries.
Screened subnets shield private internal resources from untrusted internet ingress.

Key Concept

Secure Network Segmentation Archetypes
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