2.  Explain the IEEE 802 networking model and
related standards
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3.  Institute of Electrical and Electronics
Engineers
 Leading developer of industry and standards
in a broad range of technologies
 Mission: foster technological innovation and
excellence for the benefit of humanity.
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4.  provides detailed implementation
specifications for a number of networking
technologies
 Influential set of networking standards
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5.  The IEEE defined a set of LAN standards to
ensure network interface and cabling
compatibility
 Project 802 (inception on February (2) of 1980)
▪ Concentrates on standards that describe a network’s physical
elements
▪ NICs, cables, connectors, signaling technologies, media access
control, and the like
 OSI model was not standardized until 1983–1984
 IEEE 802 standards predate the model
 Both were developed in collaboration and are
compatible with one another
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IEEE 802 Specifications (continued)

8.  MediumAccess Control
 collisions
 Data Communications Protocol
 A protocol must also exist for transmitting data
once the node has gained control of the medium
and is able to transmit.
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12.  Ethernet
 CSMA/CD – Carrier Sense MultipleAccess
with Collision Detection
 Terminates transmission when it detects collision
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13.  Token Bus
 Implementing a token ring protocol on a
coaxial cable
 Used for industrial applications
 Used by General Motors in their MAP
(ManufacturingAutomation Protocol)
 Not reliable
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15.  Demand Priority or High Speed Networking
 100Mbps Ethernet standard over Category
3UTP
 Also called 100VG AnyLAN
 Carries both Ethernet andToken Ring
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16.  The OSI reference model and IEEE Project 802
define a frame of reference for networking and
specify the lower-layer behaviors for most
networks
 Together, these models describe the complex
processes and operations involved in sending and
receiving information across a network
 The OSI reference model separates networking
into seven layers, each with its own
purposes/activities
 From the bottom up: Physical, Data Link, Network,
Transport, Session, Presentation, and Application
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17.  Data frames consist of three parts: frame header,
data section, and frame trailer
 Classified as unicast, multicast, or broadcast frames
 The IEEE 802 project elaborates on the functions
of a network’s Physical and Data Link layers by
dividing the Data Link layer into two sublayers:
Logical Link Control (LLC) and Media Access
Control (MAC)
 Together, these sublayers handle media access,
addressing, and control and provide reliable, error-free
delivery of data frames from one computer to another
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