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220-1102 Practice Question: A technician is deploying a new virtual machine…

A technician is deploying a new virtual machine on a Type 1 hypervisor. The VM will run a Linux web server and needs to be isolated from the corporate network except for HTTPS traffic. Which networking configuration should the technician implement?

⚠ Common exam trap

In CompTIA A+ exams, candidates often confuse host-only and NAT networking modes, mistakenly thinking NAT alone provides inbound access, but NAT without port forwarding only allows outbound connections.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Use a virtual switch set to host-only mode and configure port forwarding for HTTPS

A host-only virtual switch creates an isolated network between the host and the VM, preventing direct access from the corporate network. By configuring port forwarding on the host, the technician can selectively allow only HTTPS traffic (TCP/443) to reach the VM while keeping it otherwise isolated. This meets the requirement of isolation except for HTTPS.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Bridge the VM directly to the physical network adapter

    Why it's wrong here

    Bridging directly connects the virtual machine to the physical network adapter, making it appear as a separate, distinct host on the corporate network. The VM would obtain an IP address from the corporate DHCP server, granting it full access to all network resources and exposing it to all network traffic. This configuration completely defeats any isolation requirements, as the VM becomes indistinguishable from a physical machine on the network.

  • Use a virtual switch set to host-only mode and configure port forwarding for HTTPS

    Why this is correct

    Host-only mode creates a private virtual network between the VM and the host machine, completely isolating the VM from the external corporate network. This ensures the VM cannot be directly accessed or discovered by other devices on the corporate network. Configuring port forwarding specifically for HTTPS (port 443) on the host allows only this designated traffic to pass from the host to the isolated VM, precisely meeting the requirement for secure, controlled inbound access while maintaining maximum isolation.

  • Attach the VM to a NAT network without any port forwarding

    Why it's wrong here

    Attaching the VM to a NAT network allows it to share the host's IP address for outbound connections, enabling internet access while providing a degree of isolation from the corporate network. However, without explicit port forwarding rules configured on the host, external devices on the corporate network cannot initiate inbound connections to the VM. This means the required HTTPS traffic from the corporate network would be blocked, preventing the VM from receiving necessary services.

  • Assign the VM an IP from the corporate DHCP scope

    Why it's wrong here

    Assigning the VM an IP address directly from the corporate DHCP scope effectively places the virtual machine directly onto the corporate network as if it were a physical device. This configuration bypasses all forms of network isolation, making the VM fully discoverable and accessible to all other machines on the corporate network. Such direct exposure violates the fundamental security requirement for isolating the virtual machine from the broader corporate environment.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This 220-1202 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1202 exam.