For anyone studying networks and networking protocols, memorizing the 7 layers of the OSI reference model is a fundamental but sometimes tricky task. The official names and numbers of each layer can seem abstract and random at first.
Luckily there are some handy memory tricks out there to help learn and recall the OSI model layers in order. One of the most popular and quirky mnemonics is
“Do Not Throw Sausage Pizza Away”
Breaking Down the OSI Pizza Mnemonic
This particular memory aid uses a hypothetical pizza order to represent the sequence of layers in the OSI model from bottom to top
- Do – Data Link Layer (Layer 2)
- Not – Network Layer (Layer 3)
- Throw – Transport Layer (Layer 4)
- Sausage – Session Layer (Layer 5)
- Pizza – Presentation Layer (Layer 6)
- Away – Application Layer (Layer 7)
The first letter of each word maps to the first letter of each OSI layer name, starting with the physical layer (L1) at the bottom. This wacky phrase helps reinforce the bottom-to-top order of the model.
While it may seem silly at first, this pneumonic device has proven very effective at helping generations of networking students commit the OSI layers to memory. The absurd imagery of tossing an entire pizza pie makes the sequence far more memorable.
Why Use Mnemonics for the OSI Model?
Memorizing the order of the OSI model layers is important for anyone dealing with computer and network protocols. But the layered architecture can be abstract at first.
Mnemonic phrases are a time-tested study aid. They create an easy visual and plot line to reinforce connections in your memory. Associating each layer with part of a hypothetical (and ridiculous) pizza order creates easy mental hooks to hang each layer name and number on.
Rather than rote memorization, mnemonics use these hooks to tap into visual memory and storytelling. The wacky imagery embeds the information deeply for easy recall later.
More Examples of OSI Model Mnemonics
“Do Not Throw Sausage Pizza Away” is one of the most popular memory aids for the OSI model layers, but there are many others. A few more examples include:
- Please Do Not Throw Sausage Pizza Away
- All People Seem To Need Data Processing
- A Person Should Try Not Drink Poop (a bit gross, but memorable!)
- Packets Must Never Travel Slow or Packets May Become Fat
The key is finding a phrase that resonates and sticks in your own mind. Come up with your own mnemonic, the sillier the better!
Tips for Memorizing the OSI Layers
Mnemonics are fantastic memory aids, but other techniques can further reinforce the OSI model layers in your mind:
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Write out flashcards with the name, number, and main functions of each layer. Test yourself until they are committed to memory.
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Draw diagrams of the OSI model stack with both ascending and descending layer orders. Visualizing the model is key.
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Use acronym shorthand like PMDNTSPA or APSTNDP as quick reminders.
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Develop mental images for what each layer does, like the Network layer routing packets.
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Apply the layers routinely when analyzing protocols and network operations. Practical usage solidifies the knowledge.
Combining these study strategies with a quirky memory phrase gives you the tools to lock in OSI model proficiency.
The Importance of the OSI Reference Model
Understanding the OSI conceptual model is important both for learning and for applying networking concepts. The layer architecture helps make the complex myriad of network protocols more understandable.
Knowing the layered approach helps contextualize how encapsulation, multiplexing, addressing, routing, sessions, encryption, compression, and other functions fit together in the big picture. Mastering the OSI model ultimately makes any network protocol easier to grasp.
While OSI itself is not used in modern networks, its influence on TCP/IP and overall network design remains strong. The reference model lives on as a powerful learning tool for new students of networking.
So don’t just throw away that sausage pizza! Let this delicious mnemonic aid you in learning the OSI model layers once and for all. The silly phrase helps reinforce the fundamentals that underpin a deeper understanding of computer networks for both academics and IT professionals alike.
OSI Model Layers – A Quick Summary
| Layer Number | Layer Name | Main Functions |
|---|---|---|
| 7 | Application | High-level APIs, including resource sharing, remote access |
| 6 | Presentation | Translation, encryption, compression |
| 5 | Session | Managing communication sessions and connections |
| 4 | Transport | Reliable transmission of data segments end-to-end |
| 3 | Network | Structuring and managing a multi-node network, routing |
| 2 | Data Link | Reliable transmission of data frames between nodes |
| 1 | Physical | Transmission and reception of raw bit streams over physical mediums |
So memorize those OSI pizza toppings, and you’ll have the layers down in no time!
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- People often use the mnemonics “Please Do Not Throw Away Sausage Pizza” and “All People Seem To Need Data Processing” to help them remember the seven layers of the OSI model. Whether you like one or the other may depend on whether you remember the layers better from bottom to top or top to bottom. Some clever ways to remember the seven layers of the OSI model are “Please Do Not Throw Away Sausage Pizza” and “All People Seem To Need Data Processing.” Whether you like one or the other may depend on whether you remember the layers better from bottom to top or top to bottom.
- Here’s the best way to solve it. Answer: Here’s how to answer this question. This tip from AI is based on Chegg’s full answer. What way does it help you understand the OSI model better: from bottom to top or from top to bottom? Sign up to find out more! The mnemonics Please Do Not Throw Sausage Pizza A. View the full answerPrevious question Next question.
Please Do Not Throw Sausage Pizza Away
FAQ
What is the acronym for the 7 network layers?
What is the funny acronym for the OSI model?
What is the mnemonic OSI model pizza?
What mnemonics should I use if I don’t like salami pizza?
Here are some mnemonic phrases to help you remember the layers of the OSI model: “Please Do Not Throw Salami Pizza Away” — this works for bottom-to-top. If you don’t like salami pizza, then how about seafood or spinach pizza instead? “All People Seem To Need Data Processing” — a top-to-bottom reminder.
Is sausage casing healthier option to eat?
Cellulose casings and some natural casings are perfectly fine to eat. Sausage casings are used to hold and shape filling inside so that it can be cooked. There are natural sausage casings and synthetic varieties, and most of them are edible. The healthiest way to cook them is by boiling or baking. Sausages provide high levels of vitamin B12 and iron, both of which are essential for healthy red blood cells and hemoglobin production.
How do you slice a mnemonic pizza?
Two Ways to Slice the Mnemonic Pizza: Please Do Not Throw Sausage Pizza Away. Or, if you’re feeling cheeky, Please Do Not Teach Students Pointless Abbreviations, also works. So, there you have it. From bits at the base to applications at the top, that’s our OSI model! Remember, whether it’s pizza or networking, layers make everything better.