Virtualization and Cloud Computing

Question 1

The process of creating a software-based or virtual representation of something such as virtual applications, servers, storage, and networks

Answer 1

Virtualization

Question 2

What are the components of virtualization?

Answer 2

Physical server, virtualization layer (hypervisor), virtual machines

Question 3

What is a hypervisor?

Answer 3

virtualization layer (hypervisor) that has all of the drivers and requirements to control underlying hardware

Question 4

With virtualization, all virtual machines are encapsulated. What does this mean?

Answer 4

If one were to go down, it wouldn’t impact the others if one gets a virus or goes corrupt because they live in their own bubble

Question 5

What is the physical server called in a virtualization environment?

Answer 5

Virtual host

Question 6

What does it mean that virtual machines are portable?

Answer 6

As long as are using the same hypervisor, can transfer a virtual machine to a different virtual host without having driver or compatibility issues because the VM only knows the hypervisor as its host

Question 7

enables companies to consume a compute resource, such as a VM, storage or an application, as a utility rather than having to build and maintain computing infrastructures in-house

Answer 7

cloud computing

Question 8

owns the data center and manages all the hardware, networking, and virtualization

Answer 8

cloud provider

Question 9

What is on-demand self service in cloud infrastructure?

Answer 9

Users select what service they want to use with price based on utilization of the resource; should be fully automated and delivered in an almost instant fashion by the cloud provider

Question 10

What does metering mean in cloud infrastructure?

Answer 10

Measured by call, MB using, how many seconds machines were on; will show on invoice; allows for creating new resources when needed and shutting them off when not needed anymore

Question 11

What is rapid elasticity in cloud computing

Answer 11

Cloud services can easily be skilled up or out depending on demand, and even automatically; allows for paying for resources needed

Question 12

What is reliability in cloud computing?

Answer 12

cloud provider takes care of high availability and disaster recovery; HA protects against software and hardware ; DR is something bigger including a natural/human disaster

Question 13

What are 3 most popular use cases for virtualization?

Answer 13

Development and Testing; Sandbox; and Legacy Software & Operating Systems

Question 14

What is a sandbox environment in virtualization?

Answer 14

Sandbox

Question 15

What do you need to have in terms of resources for virtualization?

Answer 15

Enough CPU/RAM/storage

Question 16

True or False: A virtual machine is not subject to all the same security risks as a real computer.

Answer 16

False

Question 17

True or False: The host must support the bandwidth for all VMs running on it.

Answer 17

True

Question 18

What type of virtualization involves the hypervisor running on top of the OS?

Answer 18

Type 2 Hypervisor

Question 19

In the enterprise level, which hypervisor type is most used and sits physically on top the server without an OS between?

Answer 19

Type 1 Hypervisor (Bare Metal)

Question 20

Type of cloud computing service you manage everything from apps to networking and everything in between

Answer 20

On-premises

Question 21

Type of cloud computing service that delivers cloud computing infrastructure such as networking, storage and virtualization, but you as a client still manage the apps, data and OS

Answer 21

IaaS (infrastructure as a service)

Question 22

Type of cloud computing service where developers maintain management of only the applications

Answer 22

PaaS (Platform as a Service)

Question 23

Type of cloud computing service where everything is managed by the vendor

Answer 23

Software as a Service

Question 24

Cloud computing deployment model where the vendor provides a cloud service to multiple clients, sharing the same hardware on the backend

Answer 24

Public Cloud

Question 25

Cloud computing deployment model where hardware is used by a single company, which often owns the hardware and datacenter

Answer 25

Private cloud

Question 26

Cloud computing deployment model where it combines public and private access

Answer 26

Hybrid cloud

Question 27

Cloud computing deployment model where infrastructure is shared between several orgs from a specific community with common concerns

Answer 27

Community cloud

Question 28

True or false: Most cloud offerings are in the private cloud model

Answer 28

False - they are in the public cloud

Question 29

refers to the process of running a users desktop inside a virtual machine that lives on a server in the datacenter

Answer 29

Virtual Desktop Infrastructure (VDI)

Question 30

Cloud computing aspect that ensures the need for the company's data to be always available, even in the event of a natural disaster

Answer 30

Replication

Question 31

Cloud computing aspect that provides confidentiality

Answer 31

Encryption

Question 32

Cloud computing aspect that covers the ability of a customer to access cloud management services remotely and does not involve data recovery

Answer 32

Connectivity