Chapter 25: Virtualization & Hypervisors

Presentation

Hypervisor types, the hardware requirements, VM anatomy, networking modes, snapshots and the four faults you will actually meet.

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Hands-On Lab

Build the same machine on three hypervisors. Stage 1 Oracle VirtualBox, stage 2 VMware Workstation where every concept is renamed, stage 3 a bare-metal Type 1 host where the memory pool is finite and the host refuses. Graded on the machine you build, not the buttons you press.

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Chapter Quiz

Test hypervisor types, requirements, networking modes and snapshot behaviour. Twenty questions, in a different order every attempt.

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Learning Objectives

Explain what a hypervisor does: scheduling, memory mapping, device emulation and isolation
Distinguish Type 1 (bare-metal) from Type 2 (hosted) and give examples of each
Identify Oracle VirtualBox and VMware Workstation/Fusion, and choose between them for a given job
State the hardware requirements: Intel VT-x / AMD-V, RAM, cores, disk
Enable virtualization in UEFI/BIOS and recognise conflicts with Hyper-V, WSL2 and Credential Guard
Describe VM components: vCPU, vRAM, virtual disk, virtual NIC, virtual optical drive
Select the correct virtual network mode: NAT, Bridged, Host-only, Internal
Explain snapshots, and why a snapshot is not a backup
Apply virtualization security: isolation, VM escape, shared folders, VM sprawl
Troubleshoot the four common failures: VT-x disabled, no bootable medium, over-allocation, missing guest tools