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Block 4 - Servers > 2A > Flashcards

2A Flashcards

1
Q

____ simply separates hardware from software

A

Virtualization

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2
Q

A virtual machine (VM) is not a real machine just as virtual reality is not reality. Rather it is a combination of software applications
and an operating system tricked into…?

A

thinking it has its own dediated hardware

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3
Q

In virtualization, hardware may be ____ with several other VMs. This offers a much better utilization rate of server hardware while still isolating applications.

A

shared

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4
Q

When implemented properly, you can run many VMs on ___ piece of hardware. This translates into savings on hardware and associated maintenance contracts as well as minimizing electricity needed to run the hardware and cooling systems in the data center.

A

one

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5
Q

VMs are just like physical machines. VMs have a BIOS, hard disks, memory, CPUs, operating systems, and applications. Just keep in mind that virtualization is intended as a way for ___ ___ ___ to share a single hardware resource so each software product can operate as though it has complete control of the underlying resources.

A

multiple software products

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6
Q

The following describes which virtualization component?

The ____ server is the computer on which the virtualized environment resides. It is the hardware providing computing resources such as processing power, memory, disk, and the network Input/Output (I/O).

A

Host Server

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7
Q

What does VMM stand for?

A

Virtual Machine Monitor

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8
Q

The VMM is also known as what?

A

The Hypervisor

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9
Q

The following describes which virtualization component?

The ___ is the link managing the communications between the host server and the virtualized environment. Hypervisors dynamically assign the resources such as memory, disk space and physical devices residing on the host server to multiple virtual machines.

A

The hypervisor or VMM

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10
Q

The following describes which virtualization component?

A ___ is installed on virtual computer architecture and allows for end-user interaction that is indistinguishable from a standard physical computer. A single virtual environment can consist of more than one guest OS assuming the physical machine has sufficient hardware
capacity and memory to host multiple VMs.

A

Guest OS

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11
Q

What are the three components of virtualization?

A

Host server, VMM, Guest OS

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12
Q

The overall goal of virtualization is to provide a way for multiple software application products to ___ a single hardware resource so each software product can operate as though it has complete control of the underlying hardware resource.

A

share

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13
Q

The following describes which virtualization type?

____ virtualization is defined as a virtualization technology used to separate a desktop computer environment from the physical device used to access it. ____ virtualization is often used to move workloads into isolated environments to reduce system administration requirements.

A

Client Virtualization

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14
Q

The following describes which client virtualization architecture?

As hinted in the name, it is an application delivery method that delivers desktops or applications from a shared server. This enables access to client applications from a central server that relates to clients. This initiates a presentation session through a web portal while giving them access to a virtualized application instance
on a shared Windows Server OS. The only resources shared with the client are the graphical user interface as well as the mouse and keyboard.

A

Presentation Virtualization

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15
Q

The following describes which client virtualization architecture?

Creates a simulated desktop.

A

Virtual Desktop Infrastructure (VDI)

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16
Q

Which client virtualization architecture is also known as desktop virtualization?

A

Virtual desktop infrastructure (VDI)

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17
Q

The following describes which client virtualization architecture?

Allow applications to run in foreign environments. (Example: Run Windows apps on Linux)

A

Application Virtualization

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18
Q

The following describes which client virtualization architecture?

On-demand app delivery with no need to fully install on end-user device.

A

Application Streaming

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19
Q

The following describes which client virtualization architecture?

Allows for users to access a workspace without being tied to a single workstation. “Follow-me” or “Roaming Profile.”

A

User profile virtualization

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20
Q

The following describes which virtualization type?

It is the partitioning of a physical server into smaller virtual servers. This partitioning hides the server’s hardware resources to include the number and identity of individual host servers, processors, and operating systems from users.

A

Server Virtualization

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21
Q

____ virtualization is the most common type of virtualization.

A

Server Virtualization

22
Q

Server virtualization is accomplished using software like ____, _____, and ____. These VMs interact with other servers, applications, and client devices just as physical servers would.

A

VMware (the current industry leader), Citrix XenServer or Microsoft Hyper-V

23
Q

Virtualizing servers is basically the ____ of the operating system and its associated applications from the physical hardware underneath.

A

separation

24
Q

What are the three main Server Virtualization types?

A

operating-system-level virtualization, hardware emulation, and para-virtualization

25
Q

The following describes which server virtualization type?

Guest OS installed over Host OS.

A

Operating-system-level Virtualization

26
Q

The following describes which server virtualization type?

Host will emulate hardware being presented to Virtual Server.

A

Hardware Emulation

27
Q

The following describes which server virtualization type?

Provides an interface to virtual machines that are similar to their underlying hardware.

A

Para-virtualization

28
Q

The following describes which virtualization type?

____ Virtualization is running specific software applications on central servers while separating these applications from the underlying hardware the end users are accessing.

A

Application Virtualization

29
Q

With Application Virtualization, rather than the one-to-one relationship seen in a standard desktop scenario; application virtualization allows multiple users to _____ access the same application installed on a central server.

A

simultaneously

30
Q

The following describes which virtualization type?

____ virtualization is pooling the physical storage from multiple network storage devices into what appears to be a single storage device managed from a central console. ____ virtualization
is often implemented after initial server virtualization efforts to centralize resources and reduce storage administration work. ____ virtualization is commonly used in storage area networks
(SAN).

A

Storage Virtualization

31
Q

List the virtualization applications:

A

Development and Testing
Training
Server Consolidation
Load Balancing
Server Pooling
Disaster Recovery

32
Q

The following describes which virtualization application?

Virtualization is useful for its ability to develop and test in a real-world environment. A developer or tester can replicate a distributed environment containing several machines on a single piece of hardware. This setup negates the need to have any number of servers sitting around for the occasional use of developers or testers.

A

Development and Testing

33
Q

The following describes which virtualization application?

____ environment to simulate troubleshooting
scenarios.

A

Training

34
Q

The following describes which virtualization application?

One physical host server does the job of many.

A

Server Consolidation

35
Q

The following describes which virtualization application?
___ ___ involves running two or more VMs on separate pieces of hardware and dividing regular workload between them.

A

Load Balancing

36
Q

The following describes which virtualization application?

Server pooling utilizes virtualization software to manage a
group or pool of virtualized servers.

A

Server Pooling

37
Q

The following describes which virtualization application?

Restoration of virtual servers made easy by means of VM
snapshots or backup “images.”

A

Disaster Recovery

38
Q

What are the two virtualization approaches?

A

Bare-Metal Virtualization
Hosted Virtualization

39
Q

Bare-Metal virtualization is a type _ hypervisor?

A

1

40
Q

Bare-Metal virtualization (type 1 hypervisor) involves virtualized servers where the virtualization software is installed ___ ___ ___ ___ hardware rather than on an operating system. Because it installs on the machine hardware, it is said to reside on “Bare-Metal”.

A

directly on the machine

41
Q

Bare-Metal virtualization resides on the bare metal which allows direct access to hardware resources, which results in better…?

A

performance, scalability and stability

42
Q

Bare-Metal virtualization resides on the bare metal which allows direct access to hardware resources, which results in better…?

A

performance, scalability and stability

43
Q

One disadvantage of a Bare-Metal virtualization hypervisor is the hardware support is typically more limited because the hypervisor usually has…?

A

limited built-in device drivers

44
Q

What are some examples of Bare-Metal Virtualization?

A

Examples: VMWare ESXi & Microsoft Hyper-V.

45
Q

Bare-Metal virtualization is well suited for ___ ___ because it usually comes with advanced features for resource management, high availability, and security. Administrators can centrally manage this kind of virtualization hypervisor, which is critical when you have many hosts in your virtual infrastructure.

A

data centers

46
Q

A hosted hypervisor is a type _ hypervisor?

A

2

47
Q

A hosted hypervisor (type 2 hypervisor) requires an ___ to first be installed.

A

OS

48
Q

What are some examples of Hosted Virtualization?

A

Examples: Oracle VM VirtualBox, VMWare Workstation, & VMWare Fusion.

49
Q

These hypervisors are basically applications installed on a guest OS. This approach provides better hardware compatibility than bare-metal virtualization, because the OS is responsible for the hardware
drivers instead of the hypervisor.

A

Hosted Virtualization

50
Q

A hosted virtualization hypervisor does not have direct access to ____ and must go through the OS which increases memory
use as well as processor usage and can degrade virtual machine performance. Also, because there are typically many services and applications running on the host OS, the hypervisor often steals
resources from the VMs running on it.

A

hardware

51
Q

Hosted hypervisors are common for ____ since they allow the running of multiple operating systems. These virtualization hypervisor types are also popular for ____ to maintain
application compatibility on modern operating systems.

A

desktops
developers

Block 4 - Servers (13 decks)

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