Introduction types of medium data_com
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Introduction • Data Communication • Networks • Protocols and Standards • Standard Organizations
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A computer network or data network is a telecommunications network that allows computers to exchange data. In computer networks, networked computing devices pass data to each other along data connections. The connections (network links) between nodes are established using either cable media or wireless media. The best-known computer network is the Internet.
Transcript of Introduction types of medium data_com
Introduction
• Data Communication• Networks• Protocols and Standards• Standard Organizations
Data Communication System Components
Basic Concepts
• Line Configuration• Topology• Transmission Mode• Categories of Networks• Internetworks
Point-to-Point Line Configuration
Point-to-Point Line Configuration
Point-to-Point Line Configuration
Multipoint Line Configuration
Mesh Topology
Star Topology
Tree Topology
Bus Topology
Ring Topology
Simplex
Half-Duplex
Full-Duplex
OSI Model
• The model• Functions of the layers
OSI Model
OSI Layers
An Exchange Using the OSI Model
Physical Layer
Data Link Layer
Data Link Layer Example
Network Layer
Transport Layer
Transport Layer Example
Transport Layer Example
Session Layer
Presentation Layer
Application Layer
Summary of Layer Functions
Transmission Media
• Guided Media
• Unguided Media
Electromagnetic Spectrum
Twisted-Pair Cable
Effect of Noise on Parallel Lines
Noise on Twisted-Pair Lines
Unshielded Twisted-Pair Cable
UTP Connectors
Shielded Twisted-Pair Cable
Coaxial Cable
Refraction
Critical Angle
Reflection
Multimode Step-Index
Multimode Graded-Index
Single Mode
Fiber Construction
