Ch3 Terms Flashcards
BIOS
Basic Input / Output System
What does BIOS do?
BIOS allows a computer to boot up after it is powered on.
UEFI
Unified Extensive Firmware Interface
Workload
An application or service that consumes resources
Multicore Processor
A processor with two or more independant processing units.
• Facilitates Multitasking.
Hyperthreading
Creating two Logical Cores for each Physical Core.
Overprovisioning
Allocating more Virtual Resources than the Host can provide.
VM
Virtual Machine
Are Virtual Machines Logical or Physical?
Logical
HAV
Hardware Assisted Virtualization
Hardware Assisted Virtualization
The capability for Virtualization is built into the processor.
Hypervisor
A program that manages the virtual infrastructure
Host
The Physical Server
The VMs running on the Host are called _____.
Guests
The Hypervisor allows Guests to share…
CPU, Memory, Storage, etc
Type 1 Hypervisor
Runs directly on Physical Hardware.
Very efficient, secure, and scalable.
(Bare-Metal Hypervisor)
Type 2 Hypervisor
Depends and Runs on top of a Host OS. More Vulnerable, good for personal use.
Why use Virtualization?
• Less Resource Waste
• Less Money Wasted
vCPU
Virtual CPU
vCPU’s are allocated from ___.
The Host’s pCPU’s.
pCPU
Physical CPU
The CPU Overcommittment Ratio should be determined by _____.
The type of workloads being run.
(3:1 vCPU–pCPU is safest.)
TPS
Transparent Page Sharing
Transparent Page Sharing
Uses deduplication to combine identical memory pages into a single copy to maintain.
• Improves Host Performance
