Computer Networks

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How many kinds of <strong>Networks</strong>? 6 Depending on one’s perspective, we can classify networks in different ways Based on transmission media: Wired (UTP, coaxial cables, fiber-optic cables) and Wireless Based on management method: Peer-to-peer and Client/Server Based on network size: LAN and WAN (and MAN) Based on topology (connectivity): Bus, Star, Ring … There may be more in future
Transmission Media 7 Two main categories: Guided ― wires, cables Unguided ― wireless transmission, e.g. radio, microwave, infrared, sound, sonar We will concentrate on guided media here: Twisted-Pair cables: ‣ Unshielded Twisted-Pair (UTP) cables ‣ Shielded Twisted-Pair (STP) cables Coaxial cables Fiber-optic cables
Page 1 and 2: ICTCO10506 Computer Networks ASANKA
Page 3 and 4: What is a Network? 3 A network con
Page 5: Use of Network 5 Email Chat W
Page 9 and 10: Where peer-to-peer network is appro
Page 11 and 12: Management: Clients and Servers 11
Page 13 and 14: Network size: Wide Area Network (WA
Page 15 and 16: Network size 15
Page 17 and 18: Topology: 3 basic types 17 Bus Top
Page 19 and 20: Lecture 01 : OSI Model 19
Page 21 and 22: Strategies for coping with complexi
Page 23 and 24: OSI Model 23 By the International
Page 25 and 26: Seven layers of the OSI model 25
Page 27 and 28: The interaction between layers in t
Page 29 and 30: An exchange using the OSI model 29
Page 31 and 32: The Physical Layer 31
Page 33 and 34: The physical layer is responsible f
Page 35 and 36: The Data Link Layer 35 Purpose:
Page 37 and 38: The data link layer is responsible
Page 39 and 40: The Network Layer 39 Purpose: Del
Page 41 and 42: The Network Layer: 41 Source-to-des
Page 43 and 44: The Transport Layer 43 Accept data
Page 45 and 46: The Transport Layer 45 Reliable pro
Page 47 and 48: The transport layer is responsible
Page 49 and 50: The Session Layer 49 Purpose: P
Page 51 and 52: The Presentation Layer 51
Page 53 and 54: The presentation layer is responsib
Page 55 and 56: The Application Layer 55 Purpose
Page 57 and 58:
Summary of Layers 57
Page 59 and 60:
Any Questions… 59
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Computer Networks

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