Introductory Networking
· The topic that we going to cover in this blog are
(1) The osl model
(2) How these models look in practice
(3) The tcp/ ip model
* The OSI model an overview........
The osl (open system interconnection) model is standardised model we use to demonstrate the theory behind computer network in praactice its actullay the more computer tcp/ ip model that real world networking is based off however the osl model in many ways is easier to get anintial undersatanding from
.
The osl model consists of severn layers
Osl
(1) Application
(2) Presentation
(3) Session
(4) Transport
(5) Data link
(6) Physical
*There are many mnemonics floating around to help you learn of the osl model—search around unit you find one you like
*Personally favour Anvious pale Shakespeare Treated nervous drunks patiently
Layer 7—application
Layer 6—presentation
Layer 5—session
Layer 4—trasprort
Layer 3—network
Layer 2 – data link
Layer 1 – physical
The tcp / ip model
. Tcp /ip
(1) Application
(2) Transport
(3) Internet
(4) Network
(5) Interface
The two types match up something like this
(1) Osi
(i) Application
(ii) Presentation
(iii) Session
(iv) Transport
(v) network
(vi) datalink
(vii) physical
(2) tcp/ip
(i) application
(ii) transport
(ii) internet
(iv) network
(v) Interface
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