Please Do Not Throw Sausage Pizza Away.
I've been taking cybersecurity courses for a while now - randomly, and sparingly over the years- and I'd previously learnt about the OSI model in the CISCO networking course a few months ago.
it was long, and confusing, and I had absolutely no idea how I was supposed to remember the seven components that made up the OSI model, in order, off the top of my head, for whatever reason I might have had to.
Please Do Not Throw Sausage Pizza Away.
Fast-forward to last year December. Now I'm registered as a cybersecurity student under a GDSC tech boot-camp initiative in my school. I'm in the cybersecurity class and our facilitator had just gotten to the section of the course which talked about the OSI model.
'Please Do Not Throw Sausage Pizza Away'. Why have I repeated this phrase so many times throughout the length of this Article ?
Because it showed me the importance and difference in having guidance in your tech journey over just learning stuff on your own, hacks.
What Is the OSI Reference model ?
OSI stands for Open Systems Interconnection.
The OSI model is a reference model for network communications that describes how computers communicate over a network. It consists of seven models and the sentence below represents them in ascending order.
Please Do Not Throw Sausage Pizza Away.
Components of the OSI model
The P stands for the Physical layer. The D stands for the Data layer, the N stands for the Network layer, the T stands for the Transport layer, the S stands for Session layer, the second P stands for the Presentation layer, and the A stands for the Application layer.
Please
The physical layer. This layer represents the physical components of the communication network like the cables, connectors, network cards and so on.
Do
The Data layer. This layer describes methods for packaging data into frames and exchanging them between devices . Examples are Ethernet and Wi-Fi.
Not
The Network layer. This layer provides services to exchange data across networks. Examples are, IP addresses and subnetting.
Throw
The Transport layer. defines services to segment data into smaller packets, transfer them, and reassemble them at the destinations. Examples are; TCP and UDP.
Sausage
The session layer. It provides services to the presentation layer and manages communication sessions between applications.
Pizza
The Presentation layer. It translates the data transferred between application layer services. Examples are, Encryption and character encoding.
Away
Application layer. It enables applications to communicate with each other across the network. Examples are HTTP (Hyper Text Transfer Protocol),email, and other file sharing protocols.
So yeah, Please Do Not Throw Sausage Pizza Away. My hands are getting tired of typing that so much, which probably means your eyes and brains are tired of reading it too, that's the last time then.
I hope this phrase, and the article as a whole helps someone, and perhaps when you're in an assessment, conversation, or exam where the OSI model is being discussed and you can't seem to recall the order, I hope you remember it.
Please Do Not Throw Sausage Pizza Away (last time, really)
you're welcome
Conclusion
This article discussed the OSI model, it's meaning and importance, and teaches you a hack to never again forget its components and their order.
If you enjoyed this article and it was in any way helpful to you, check out my blog for more articles like this and feel free to subscribe and follow my newsletter so you'll be one of the first people to know when I write new ones.
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