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Virtualization & Cloud Computing–Advanced IP Networking–NETWORKING, SECURITY, & MORE ESSENTIALS—CompTIA Network+ (N10-007) NETWORK-PLUS Certification Prep Course Notes
Virtualization & Cloud Computing Virtualization Basics Don’t confuse virtualization with emulation! Emulation uses software to imitate hardware. Virtualization uses a system’s actual hardware! Recognize the benefits of virtualization. There are two types of hypervisors: Type 1 (bare metal) Type 2 (hosted) Virtualization doesn’t pretend to be anything that it’s not! (Remember, virtualization uses a system’s actual hardware!) Virtualization saves power; & it consolidates hardware; & it makes system recovery easy, & it’s handy for IT research! Hypervisor–V.M.M. (Virtual Machine Monitory) the thing that manages & runs the Virtual Machine for us! Type 2 Hypervisor–runs on top of the host OS. Type 1 Hypervisor–runs directly on top of hardware, independent of…
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Virtualization—NETWORKING ESSENTIALS—CompTIA A+ (220-1001) A-PLUS Certification Prep Course Notes
VIRTUALIZATION Understanding Virtualization Virtual machines are self-contained computers running within a host OS Hypervisors support multiple VMs A type 1 hypervisor runs directly on top of the hardware as an OS A type 2 hypervisor runs as an app in an existing OS Your First Virtual Machine Setting up a new VM takes a few steps. Install a hypervisor, like Oracle VirtualBox. Create a virtual machine in the hypervisor. Download & install an operating system, like Ubuntu Linux. Advanced VIrtualization You can modify virtual hardware easily, such as add a “drive”. Bridge a VM to connect to same network (and DHCP server) as host OS. Use NAT to put a…