Comprehensive and Detailed In-Depth Explanation:
A sandbox is an isolated virtual environment used to test or run applications securely without risk to the host or network. It prevents the VM from communicating with external systems, making it ideal for testing malware or suspicious software.
* Option A (VDI): Virtual Desktop Infrastructure allows network communication; it does not restrict it.
* Option B (Private cloud): Refers to a cloud deployment model, not a communication barrier.
* Option D (Type 1 hypervisor): Runs VMs directly on hardware and does not inherently block communication.
CompTIA A+ Core 1 Exam Objective Reference:
* Objective 4.1: Compare and contrast cloud computing concepts.