CompTIA exam study guide presentations by instructor Brian Ferrill, PACE-IT (Progressive, Accelerated Certifications for Employment in Information Technology) "Funded by the Department of Labor, Employment and Training Administration, Grant #TC-23745-12-60-A-53" Learn more about the PACE-IT Online program: www.edcc.edu/pace-it

1. Virtualization
technologies.

2. Page 2
Instructor, PACE-IT Program – Edmonds Community College
Areas of Expertise Industry Certifications
 PC Hardware
 Network Administration
 IT Project Management
 Network Design
 User Training
 IT Troubleshooting
Qualifications Summary
Education
 M.B.A., IT Management, Western Governor’s University
 B.S., IT Security, Western Governor’s University
Entrepreneur, executive leader, and proven manger
with 10+ years of experience turning complex issues
into efficient and effective solutions.
Strengths include developing and mentoring diverse
workforces, improving processes, analyzing
business needs and creating the solutions
required— with a focus on technology.

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– Hypervisors and Virtual Machine Managers.
– Components of virtualization.
– Software defined networking.
PACE-IT.

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Virtualization technologies.

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What is the difference
between a hypervisor and a
Virtual Machine Manager?
The difference could be nothing and everything.
Some people use the term “hypervisor” very broadly
to refer to any of the software that is used to
manage virtual machines. Others differentiate
between the two terms in this way: a hypervisor
does not need a host operating system, while a
Virtual Machine Manager (VMM) requires a host
operating system such as Windows, OS X, or Linux.
Virtualization technologies.

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Virtualization technologies.

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– Virtual desktops.
» A virtual machine (VM) that functions as a desktop.
• Any modern operating system can be run inside of the VM
desktop.
• Multiple virtual desktops may be hosted on, or from, a single
host system.
– Virtual servers.
» A virtual machine (or machines) that functions as a server.
• Any modern server operating system can be used.
• Multiple virtual servers may be hosted on, or from, a single
host system.
– Virtual switches, firewalls, and routers.
» A virtual machine (or machines) that fulfills the functions of a
switch, firewall or router.
• Virtual firewalls and routers are particularly effective when
combined with virtual network interface controllers (NICs) and
virtual switches to create virtual networks.
Virtualization technologies.

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An important consideration
when designing a virtual
network is how the virtual
network is going to pass
traffic to remote networks.
Virtualization, by its nature, leads to either an open and
highly scalable network or a closed self-contained system. It
is possible to create a completely self-contained network
with all of the virtual components and never have the
network traffic leave the host machine.
If there is a desire or need for network traffic to pass beyond
the host system, then that function needs to be specifically
granted. A connection must be created between the host
system’s physical NIC and the virtual networking equipment
to allow network traffic to pass through.
Virtualization technologies.

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Virtualization technologies.

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Software defined networking
(SDN) is the process of
allowing the administration
and configuration of a network
to be done dynamically.
With SDN, the administrator uses a front end program to
make adjustments to the network. The program sends
the instructions to the networking equipment, which is
then reconfigured to perform as desired.
SDN can allow network administrators to dynamically
adjust network performance without the need to log into
each individual device that needs to be adjusted to
achieve the desired performance.
SDN is considered to still be an emerging technology.
Virtualization technologies.

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Virtualization technologies.
Depending on the source, a hypervisor and a VMM may be considered to
be the same thing. Others differentiate the two this way: a hypervisor
doesn’t require a host operating system in order to function and serve up
VMs, while a VMM requires the use of an underlying host operating system
in order to function.
Topic
Hypervisors and Virtual
Machine Managers.
Summary
Virtual machines can be created to fulfill almost any function in the modern
network (e.g., virtual desktops, servers, routers, and switches). Virtual
networks may be completely self contained, or a connection may be
created between the host system’s physical NIC and a virtual networking
device to allow network traffic to pass through system.
Components of virtualization.
SDN is an emerging technology that is being used to allow network
administrators to dynamically adjust network performance from a single
interface. This eliminates the need for the administrator to log into each
network device that needs to be adjusted in order to achieve the desired
performance.
Software defined networking.

12. THANK YOU!

13. This workforce solution was 100 percent funded by a $3 million grant awarded by the
U.S. Department of Labor's Employment and Training Administration. The solution was
created by the grantee and does not necessarily reflect the official position of the U.S.
Department of Labor. The Department of Labor makes no guarantees, warranties, or
assurances of any kind, express or implied, with respect to such information, including
any information on linked sites and including, but not limited to, accuracy of the
information or its completeness, timeliness, usefulness, adequacy, continued availability
or ownership. Funded by the Department of Labor, Employment and Training
Administration, Grant #TC-23745-12-60-A-53.
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available upon request to individuals with disabilities. For those that are hearing
impaired, a video phone is available at the Services for Students with Disabilities (SSD)
office in Mountlake Terrace Hall 159. Check www.edcc.edu/ssd for office hours. Call
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