Chap 14 - Short Answer

_________ creates a lockstep copy of a virtual machine on different host so that if the original host suffers a failure, the virtual machine's connections get shifted to the copy without interrupting users or the application they are using.

Fault Tolerance

Similar to data de-duplication, __________ is a feature built into hypervisors that helps optimize memory usage.

page sharing

A VMM is commonly known today as a ________ .

hypervisor

An operating system in a virtual machine accesses the resource that is presented to it by the Virtual Machine Monitor or _________ .

hypervisor

When multiple VMs are contending for a processor, the ________ acts as the traffic controller, scheduling processor time for each VM's request as well as directing the requests and data to and from the virtual machines.

hypervisor

The capability to allocate more memory than physically exists on a host is called __________ .

memory overcommit

The _________ is the central router of information and controls access to all of the physical resources of the hardware.

operating system

Ring _______ is the most trusted layer and is where the operating system kernel works and can interact directly with hardware.

0 (zero)

The __________ is described as being an abstract computing machine, consisting of an instruction set, a program counter register, a stack to hold variables and results, and a heap for runtime data and garbage collection, and a method area for code and constants.

Java Virtual Machine (JVM)

The goal of a __________ is to provide a runtime space for a set of Java code to run on any operating system staged on any hardware platform, without needing to make code changes to accommodate the different operating systems or hardware.

Java Virtual Machine (JVM)

________ is a software-assisted virtualization technique that uses specialized APIs to link virtual machines with the hypervisor to optimize their performance.

Paravirtualization

VMware Workstation and Oracle VM Virtual Box are examples of ________ hypervisors.

Type-2

A ________ is a software construct that mimics the characteristics of a physical server.

Virtual Machine (VM)

The _________ , or hypervisor, abstracts the physical hardware from the virtual machines it supports.

virtual machine monitor (VMM)

A machine with _________ software can host numerous applications, including those that run on different operating systems, on a single platform.

virtualization