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A+ > 220-1101 Virtualization and Cloud Computing > Flashcards

220-1101 Virtualization and Cloud Computing Flashcards

1
Q

Which cloud model is an internal cloud a business owns? Offers the flexibility of the cloud but has complete ownership of its data.

A

Private cloud

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2
Q

Which cloud model is software, platforms, and infrastructure delivered through networks that the general public can use?

A

Public cloud

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3
Q

Which cloud model is a private cloud paid for and used by more than one organization?

A

Community cloud

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4
Q

Which service model uses hardware virtualization?

A

Infrastructure as a service (IaaS)

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5
Q

What are the purposes (3) of IaaS?

A
  1. minimize idle hardware
  2. protect against data loss and downtime
  3. respond to spikes in demand
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6
Q

Which service model provided access to necessary application wherever you have on an internet connection, often without carrying the data?

A

Software as a service (SaaS)

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7
Q

Which service model gives programmers all the tools they need to deploy, administer and maintain an application?

A

Platform as a service (PaaS)

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8
Q

Which cloud characteristic is when cloud providers aggregate physical units into a pool of shared resources that is available on demand?

A

Shared resources

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9
Q

Which cloud characteristic is when cloud providers rate customers based on factors such as the traffic that goes in and out of the application or how much data is stored?

A

Metered utilization

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10
Q

Which cloud characteristic is when cloud customers can easily expand the number of servers and spread them out geographically?

A

Rapid elasticity

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11
Q

Which cloud characteristic is when cloud providers propagates file changes to a storage provider on to any other connected devices?

A

File synchronization

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12
Q

File synchronization is often built into what?

A

productivity suites

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13
Q

What are the two different forms of desktop virtualization?

A
  1. Virtual desktop infrastructure (VDI) on premises
  2. VDI in the cloud
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14
Q

How does desktop virtualization work?

A

uses a client program on the device to connect to a virtual desktop in a server

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15
Q

What are the three benefits to desktop virtualization?

A

control, security and management

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16
Q

What are the three primary purposes of virtual machines?

A
  1. Sandbox
  2. Test development
  3. Application virtualization
17
Q

What is the purpose of virtual machine sandboxing?

A

Sandbox testing: where you can experiment and check out new/updated application without messing up the primary system

18
Q

T/F: if you need to run software you don’t trust, the safest way is to run it in a virtual machine.

A

False. You can use a virtual machine, but is not a true sandbox

19
Q

What is the purpose of virtual machine test developments?

A

you can control the development environment and testing environment a lot easier on a virtual machine

20
Q

What is the purpose of virtual machine application virtualization?

A

virtualizing the OS capability that an application would normally use to install and do its work

21
Q

What are the two use cases for application virtualization?

A
  1. Legacy software/OS: running the application on a different OS version
  2. Cross platform virtualization: running applications written for another OS
22
Q

What is the purpose of enabling hardware virtualization support?

A

VMs will run better with it enabled

23
Q

Where can you enable and disable hardware virtualization support?

A

inside the system setup utility

24
Q

How much RAM does a VM require?

A

the same amount of RAM as a real machine

25
Q

How much storage does a VM require

A

a lot. Can range to hundreds of Gigabytes

26
Q

What are the 4 types of virtual networks?

A
  1. internal network: networked VMs with each other
  2. place a VM on a virtual network that only enables it to communicate with the host
  3. bridge the VM’s nic to the host’s NIC, enabling the VM to join the same network as the host
  4. no network
27
Q

What are the security considerations for virtual machines?

A
  1. Infected machines can be restored by loading from a good VM file
  2. Any other VMs are generally unaffected and uninfected
  3. most virtual machines allow snapshot or checkpoints
28
Q

Between Google Sync and Google Cloud, which provides storage?

A

Google Cloud

29
Q

What is a virtualization enhancement developed by AMD for its CPU?

A

AMD-V or Hyper-V

30
Q

What refers to a billing model where a cloud provider charges customers based on the resources they consume or the services they use?

A

Metered Usage

31
Q

What are the 5 methods for preventing VM sprawl?

A
  1. Maintain an inventory
  2. Categorize VMs based on groups or departments
  3. Identify idle VMs
  4. Identify VMs with under- or over-allocated resources
  5. Audit VMs periodically
32
Q

What are the 2 methods for preventing VM escape?

A
  1. Sandboxing
  2. Patch Management
33
Q

What is Intel’s Virtualization Technology?

A

Vt-x

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