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Introduction to Network Systems: Physical Layer, Cabling & Models 2026–2027 | OSI Model, Network Media, Ethernet, Cabling Standards & Exam Review

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Explore Introduction to Network Systems with a focused study guide covering the physical layer, network cabling, transmission media, connectors, Ethernet fundamentals, network topologies, and layered networking models such as the OSI and TCP/IP models. This resource is designed to help students understand how network devices and physical media support communication, review essential networking terminology and concepts, and prepare effectively for quizzes, assignments, practical labs, and examinations.

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Introduction to Network Systems _ Physical
Introduction
Layer, Cabling
to Network
& Models.pdf
Systems _ Physical Layer, Cabling & Models.pdf Page 1 of 47




Introduction to Network Systems |
Physical Layer, Cabling & Models




Introduction to Network Systems _ Physical
Introduction
Layer, Cabling
to Network
& Models.pdf
Systems _ Physical Layer, Cabling & Models.pdf Page 1 of 47

,Introduction to Network Systems_ Physical Layer, Cabling, and Models.pdf
Introduction to Network Systems_ Physical Layer, Cabling, and Models.pdf Page 2 of 47




Terms (88)

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What is the Physical Layer in networking?


Layer 1 of the OSI model, responsible for the transmission and
reception of raw bit streams over a physical medium.




Introduction to Network Systems_ Physical Layer, Cabling, and Models.pdf
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,Introduction to Network Systems_ Physical Layer, Cabling, and Models.pdf
Introduction to Network Systems_ Physical Layer, Cabling, and Models.pdf Page 3 of 47




What does PDU stand for in the context of the Physical Layer?


Protocol Data Unit, which is represented as bits (1s and 0s) at
the Physical Layer.


What are the three types of data connections defined in the
Physical Layer?


Simplex (one direction), Half-duplex (two directions, one at a
time), Full Duplex (two directions simultaneously).




Introduction to Network Systems_ Physical Layer, Cabling, and Models.pdf
Introduction to Network Systems_ Physical Layer, Cabling, and Models.pdf Page 3 of 47

, Introduction to Network Systems_ Physical Layer, Cabling, and Models.pdf
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What types of media are used in the Physical Layer?


Copper Wire (Twisted Pair, Coax), Optical Fiber (Single-mode,
Multi-mode), and Wireless (RF, Bluetooth).




Introduction to Network Systems_ Physical Layer, Cabling, and Models.pdf
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