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III IEEE 802.x Standards
Before the concept of a group
of networked computers was a common business thought, the Department
of Defense (DOD) had this challenge to overcome. The original
model used TCP/IP (only) and was based on a four (4)-layer
model. They are called the Network, Internet, Host-to-Host and
Application layers.
![[spacer]](1p.gif)  DOD
The NETWORK+ test has no DOD model based questions.
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As we noted when discussing Layer
2 of the OSI model, the IEEE 802 sub-committee took over a segment
of the work from the OSI group. These two groups communicated
with each other to create a working understanding of who will do
what.
As you saw earlier, this is a dynamic
function. The latest techno-speak to come out of these groups is
to rename the IEEE 802 grouping to ISO/IEC 8802-1
through ISO/IEC 8802.11. The IEC (International Electrotechnical
Commission) creates electrical standards with representatives
from more than 30 countries.
 Standards
IEC 8802.1 - 8802.11 had not entered general use when the current NETWORK+ test was written. Therefore expect the NETWORK+ test to reflect the majority of printed documentation using the older IEEE 802 reference model. It is brought up here solely to alert you to new the new terminology. This courseware references the older IEEE method, which is still the most common terminology in use.
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We shall now cover the standards
and uses by number. We will use the older naming convention both because
it is used on the NETWORK+ test, and because it is still
the most commonly used convention for those standards in the real world.
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Quick navigation to subsections and regular topics in this section
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