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. Introduction to
IPv4 I.

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Instructor, PACE-IT Program – Edmonds Community College
Areas of Expertise Industry Certification
 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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– Purpose of IP addressing.
– IPv4 address properties.
PACE-IT.

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Introduction to IPv4 I.

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When Bob on network A
wants to view a Web page
hosted on a server on network
C, how does his computer
know where to send Bob?
Well somehow Bob has gotten the server’s IP
address (either in IPv4 or IPv6 format). IP
addresses are the location of the PC or server,
identified as both network location and host location
within that network.
Introduction to IPv4 I.

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IP addressing provides a
logical addressing scheme
for our computers so that
they can communicate on
networks.
Being logical means that an IP address can be
changed with minimal fuss at any time, unlike a
MAC (media access control) address, which is
physically embedded into devices.
Introduction to IPv4 I.

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Introduction to IPv4 I.

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As IPv4 is made up of a 32-
bit binary number, there are
232 possible address
combinations.
That’s 4,294,967,296 possible combinations. With
all of these possibilities, a process needed to be
developed to keep everything neat and tidy and,
most of all, findable. The implementation of the
subnet mask was the answer.
Introduction to IPv4 I.

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– Converting binary to decimal.
» It’s very useful to understand how to convert binary (base 2) to
decimal (base 10).
• http://www.wikihow.com/Convert-from-Binary-to-Decimal.
– Initial properties of IPv4.
» 32-bit binary number.
» Divided into four sets of eight (called octets) that are separated
by periods (each octet is 8 bits, which is equal to one byte).
» Represented in human friendly format by a dotted decimal
format.
» Requires the use of a mask to determine which portion defines
the network and which portion defines the node. This is called
the subnet mask.
» The subnet mask has the same format as the IP address (32-
bits and represented in dotted decimal format).
Introduction to IPv4 I.

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– Interaction of IP address and subnet mask.
» 192.168.1.9 255.255.255.0
» 192.168.1.9 = the IP address.
» 255.255.255.0 = the subnet mask.
– Deconstructing the IP address.
» First octet = 11000000 = 192
» Second octet = 10101000 = 168
» Third octet = 00000001 = 1
» Fourth octet = 00001001 = 9
– Subnet mask characteristics.
» Anything other than a 0 defines the network address.
– Network address.
» The network address = 192.168.1
– Node address.
» The node address = 9
Introduction to IPv4 I.

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Introduction to IPv4 I.
IP addressing is logical in nature so it can be easily changed. It provides the
means of identifying the pathways between networks and nodes.
Topic
Purpose of IP addressing.
Summary
IPv4 is made up of a 32-bit binary number (base 2). There are over four
billion possible combinations. A subnet mask is used to allow for the
identification of the network and node portions of the IP address.
IPv4 address properties.

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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.
PACE-IT is an equal opportunity employer/program and auxiliary aids and services are
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
425.354.3113 on a video phone for more information about the PACE-IT program. For
any additional special accommodations needed, call the SSD office at 425.640.1814.
Edmonds Community College does not discriminate on the basis of race; color; religion;
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