Virtualization and Cloud Computing

Question 1

Occasionally, users may opt to run Windows® and Linux® on the same system.This can be accomplished by setting up a virtual machine on Windows® loaded to run Linux®. This has the advantage of allowing the user to simultaneously run both operating systems. Setting up a dual boot system is another option. What advantage does running a dual boot system have over running virtual machines?

Answer 1

Using a dual boot option allows 100% of the system resources to the operating system.

Explanation:
When setting up a dual boot system using Windows® and Linux®, you should always load Windows® first then Linux®. This allows Linux® to manage the boot sequence. The Linux® boot manager works better than Windows® boot manager.

Question 2

What is the feature found in cloud computing that allows users to automatically request additional storage space?

Answer 2

rapid elasticity

Explanation:
Rapid elasticity is the term for a service that allows users to automatically request additional storage space in the cloud.

Question 3

What is the feature found in cloud computing where the provider measures the service for billing, planning, and managing resources?

Answer 3

measured service

Explanation:
Be aware of the five principles of cloud services as defined by the National Institute of Standards and Technologies: Public/Private/Hybrid Access, Rapid Elasticity, On Demand, Resource Pooling, and Measured Service.

Question 4

Which cloud technology model allows you to use software hosted in the cloud without hosting any of the software on-premise?

Answer 4

Software-as-a-Service (SaaS)

Explanation:
SaaS is a popular model that allows software to be hosted in some central location, off-premise. All you need is an Internet connection to access the software, as needed.

Question 5

Which cloud model allows organizations to move their entire infrastructure to the cloud?

Answer 5

IaaS

Explanation:
IaaS (Infrastructure-as-a-Service) is a cloud model that allows organizations to move their entire infrastructure to the cloud. Infrastructure includes items such as routers, switches, firewalls, and servers.

Question 6

Which cloud model would allow a developer to build, create, and manage their applications without having to worry about the infrastructure?

Answer 6

PaaS

Explanation:
PaaS (Platform-as-a-Service) companies provide platforms for software developers to build, create, and maintain their applications. The PaaS provider handles everything on the back-end including setup and maintenance of servers and networking equipment.

Question 7

What makes it possible for users to access their cloud-hosted files on multiple devices (laptop, tablet, desktop) and pick up right where they left off on the previous device?

Answer 7

synchronization apps

Explanation:
Many cloud file storage services use synchronization apps that allow users to access the same version of files on multiple devices.

Question 8

What term is used to describe the process of configuring a virtual machine on a local desktop?

Answer 8

client-side virtualization

Explanation:
Client-side virtualization is the process of configuring a virtual machine on a local desktop.

Question 9

What is required for full virtualization because it handles all interactions during virtualization, making it possible for multiple guest operating systems to run at one time?

Answer 9

hypervisor

Explanation:
Hypervisors handle all interactions during virtualization and make it possible to run multiple guest operating systems at one time. Hypervisors are needed for full virtualization.

Question 10

To get a virtual machine to communicate directly through the network to which the physical machine is connected, which networking mode would you use?

Answer 10

bridged mode

Explanation:
In bridged mode, the VM is able to communicate directly through the network to which the physical machine is connected.

Question 11

When cost is not a concern, but security is the number one priority, which type of cloud implementation should be used?

Answer 11

private cloud

Explanation:
A private cloud is a cloud implementation that is owned solely by one organization. Private clouds are the most expensive to implement, but also the most secure.

Question 12

A cloud-based application that is available to anyone over the open Internet is known as which type of cloud implementation?

Answer 12

public cloud

Explanation:
Public cloud refers to anything that is delivered across the open Internet. When someone uses the term the cloud, they are often referring to the public cloud.

Question 13

What is used to replicate or mimic the behavior of another device, such as playing a Nintendo® game on a computer?

Answer 13

emulator

Explanation:
An emulator is used to replicate or mimic the behavior of another device (such as a computer mimicking a Super Nintendo® device).

Question 14

Which type of virtual networking would you use if you wanted to ensure that a virtual machine only had access to other specified virtual machines and not the rest of the network or the Internet?

Answer 14

internal networking

Explanation:
The internal networking function allows a VM to communicate with other VMs that you specify, but not access the Internet or any other computers on your network.

Question 15

An engineer would like to configure his virtual machine to make outbound connections only. Which networking mode should this engineer use for the virtual machine?

Answer 15

NAT mode

Explanation:
The NAT mode option in a virtual machine allows the virtual machine to make outbound connections only.

Question 16

What cloud concept is measured in terms of nines?

Answer 16

availability

Explanation:
Cloud characteristics include high availability, which is measured in nines, or the amount of uptime the provider offers. “Five nines” means 99.999%.

Question 17

Where can a VDI be hosted?

Answer 17

in the cloud or on premise

Explanation:
A VDI or virtual desktop infrastructure can be run either locally on premise or remotely through the cloud.

Question 18

What is a temporary, isolated virtual environment that can be used for testing or quarantining?

Answer 18

sandbox

Explanation:
A sandbox is a safe environment that can be set up on a virtual machine. The sandbox isolates the environment from the host machine and does not have access to or save data to the host, protecting the host.

Question 19

What is it called when an operating system is run virtually on another operating system?

Answer 19

cross-platform virtualization

Explanation:
Cross-platform virtualization occurs when a separate operating system is run virtually on a different operating system, such as running a Linux OS on a Windows machine.

Question 20

What is the division of the resources of a provider among the clients of the provider?

Answer 20

resource pooling

Explanation:
Resource pooling or shared resources allows for multiple clients of a provider to share resources with multiple virtual machines. It can occur either internally or externally.