Post on 24-Jan-2015
description
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Practical Wireless, Ethernet & TCP/IP Networking
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Types of Computer Networks• LANs (Local Area Networks)
Network interconnecting computers located in a small geographical area Example: Ethernet network in office
• MANs (Metropolitan Area Networks) Network interconnecting computers located at medium distances from each other Example: FDDI around perimeter of city
• WANs (Wide Area Networks) Network interconnecting computers located at large distances from each other Example: LANs via T1/ ATM/ X.25/ Frame Relay
• WLANs (Wireless LANs) Wireless networks supporting LAN, MAN and WAN infrastructures Example: Wi-Fi (IEEE 802.11b, a, g)
• PANs (Personal Area Networks) Network covering a very small area Example: Bluetooth devices in a room
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
OSI Layering Concept
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Relationship between Layers, Entities, Functions and SAPs
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Principles to Determine Layers OSI Model Should Encompass
• A layer should be created where a different level of abstraction is required
• Each layer should perform a well-defined function• The function of each layer should be chosen with thought
given to defining internationally standardized protocols• The layer boundaries should be chosen to minimize the
information flow across the boundaries• The number of layers should be large enough that distinct
functions need not be thrown together in the same layer out of necessity and small enough that the architecture does not become unwieldy
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
OSI Reference Model
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Service Primitive
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Peer Layer Interaction in the OSI Model
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
OSI Message Passing
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
OSI Layer Services
• Application layer• Presentation layer• Session layer• Transport layer• Network layer• Data link layer• Physical layer
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Ethernet • Presently the dominant LAN technology
• Provides: a set of physical media definitions a scheme for sharing that physical media a simple frame format and hardware source/destination
addressing scheme
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
TCP/IP Protocol Suite • Consists of several protocols that provide routing services, end-
to-end verification of transmitted data, and interfacing services
to the stack for clients and servers • Some of the protocols in the suite are:
TCP – A connection-oriented transport protocol UDP – A connectionless transport protocol
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Wireless LAN’s
• Some wireless technologies are: Wi-Fi (IEEE 802.11b, a, g) IEEE 802.16 (WiMax) Small dish satellite (VSAT) Mobile wireless Wireless PANs (Bluetooth, wireless USB and ZigBee)
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Advantages of Wireless Technology
• Mobility• High degree of accessibility • Reduced installation costs
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
DO YOU WANT TO KNOW MORE?
If you are interested in further training or information, please visit:
http://idc-online.com/slideshare