The OSI Model Demystified

Info

Level: Beginner
Presenter: Eli the Computer Guy
Date Created: July 9, 2010
Length of Class: 18 Minutes
Tracks

Networking
Prerequisites

Introduction to Networking
Purpose of Class

This class explains the OSI Model for technicians
Topics Covered

The OSI Model
Class Notes

Layer 7 -- Application Layer -- The layer users interact with
Layer 6 -- Presentation Layer -- Generally the layer the Operating System is on
Layer 5 -- Session Layer -- The layer that controls the communication session between two computers
Layer 4 -- Transport Layer -- The layer that controls Windowing and other tasks related to communication
Layer 3 -- Network Layer -- The layer that Routers and IP addresses operate at
Layer 2 -- Data Link Layer -- The layer that Switches, MAC Addresses and ARP reside at
Layer 1 -- Physical Layer -- The layer that cabling resides on
Resources

Wikipedia

Category:

Science & Technology

Tags:

• osi
• model
• 720pH

[smokenfly514]

Just wondering, what degree do you have and what do you work as? And thanks for the videos, they're among the most helpful instructional videos I've ever watched

[elithecomputerguy]

@smokenfly514 I have a BS in Criminal Justice... BUT I also have around 1600 hours of technical training now, and 600 hours of Emergency Services training...

[MrLangleyo]

Great work Eli, nice bite size chunks, love the teach-ins. My only gripe is you need more whiteboard space. Hope they let you out of Guantanamo soon :)

[ASHWINIAM]

its too good for beginners... i just liked the way he explans the things in easy way....... i downloaded almost all the sessions.. Thanks alot

[Durd3n001]

Just a quick question: You say that DNS resides on the network layer. Isn't DNS on the application layer? Its just a service you install on your server.

Anyway thanks for all the videos, their helping me allot!

[chammett88]

@Fedoteh1991 You're absolutely right.. Half the information in the video is inaccurate. No offense to Eli or anything..

[asiththilanka]

nice explanation thanx

[monline08]

good

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[naveenyf]

This is the best ever video that i've seen.. thanks a lot for posting...it gives me a confidence that i too could become a network engineer...thnxxxxxxxxxxxxxx

[fasihxkhatib]

@MrLangleyo Honestly, I was thinking of the dress. They are either red or orange. =)

[Ohnie8]

Very helpful Eli, Many Thanks

[ladulaser]

So pinging another computer would happen on layer 5?

[kibalabalak]

do a class on MPLS please!!!