22 lines
933 B
Markdown
22 lines
933 B
Markdown
# Network Software
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Network software is a set of rules defining how a [[Packet]] should be handled on a network (creation, delivery, etc...).
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**These rules are defined as protocols**
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The standard model that everyone uses is the [[OSI Model]]
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![[packet-encapsulation.png]]
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## Network Protocols
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Network protocols defines the rules needed for multiple computers to communicate correctly with each other. You can compare it to our rules in natural languages.
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- Protocols are divided into multiple layers (abstraction)
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- Each layer has their own responsibilities.
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- When a layer is replaced, other layers do not get affected. (Layers work independently)
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### Examples
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- A user does not need to understand how WiFi works exactly, or how signal errors are handled. (Abstraction)
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- We can replace the Ethernet cable of a computer with a WiFi module and the internet connection should work exactly the same. (Layers work independently)
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