Chapter 4

Question 1

what is virtualization

Answer 1

a logical abstraction from physical resources that enable single hardware to support multiple hardware or systems to support single instance of system

enable multienent environment improving utilization of physical resources

Question 2

benefit of virtualization

Answer 2

• optimizes utilization of physical resources
  -reduce cost
  -increase flexibility

Question 3

what is hypervisor

Answer 3

its software installed on compute system enable multi os to run concurrently on physical compute system

Question 4

what is the def between bare-metal hypervisor and hosted hypervisor

Answer 4

bare : its os , require certified hardware , installed in bare metal hardware - suitable for data center and cloud infrastructure
hosted : app installed in os , suitable for test development and training , relies on os ,

Question 5

what is resource pool ?

Answer 5

logical abstraction of aggregated computing resources that are managed collectively

Question 6

what is virtual machine ?

Answer 6

logical compute system that like physical compute system that run in os and app

hypervisor maps virtual hardware to physical hardware

Question 7

what is vm network

Answer 7

logical network that provide ethernet connectivity and enable communication between vm with in compute system

Question 8

what is lun ?

Answer 8

abstracts internal function storage system and appear as physical storage to compute system

provide provision of lun to consumer for storing data

Question 9

RAID set

Answer 9

by partitioning available capacity into smaller units

suitable for app that’s require predictable performance

Question 10

thick lun - thin lun

Answer 10

thick lun : physical storage completely allocated at time of creation

thin lun : doesn’t require physical storage to be completely allocated
- consume storage as needed