OSI network model
The OSI network model is a seven-layer conceptual reference framework for organizing and describing network communication functions independently of specific implementations.
Secure APIs
The OSI model is a seven-layer conceptual framework for describing communication functions between networked systems.
- How it is used
- Frames communication functions and helps locate API security risks across the networking stack.
- How deep it goes
- Defines all seven layers and names representative protocols, but stops short of detailed protocol internals.
- Examples
- Uses cables, Ethernet, IP, TCP, UDP, JSON, HTTP, ping floods, port scanning, and API attacks as examples.
- What you can do after
- Evaluate API exposure by mapping communication and attacks to OSI layers.
Acing the CCNA Exam: Volume 1 Fundamentals and Protocols
The OSI model is a seven-layer conceptual framework for describing the functions involved in network communication.
- How it is used
- Provides a framework for organizing network functions and a vocabulary for discussing protocols and communication.
- How deep it goes
- Defines and lists seven layers but stops short of detailed layer roles, deferring operational mechanisms to later treatment.
- Examples
- Uses an email-over-Ethernet-or-Wi-Fi scenario, a seven-layer table, and a mnemonic for exam recall.
- What you can do after
- Evaluate/understand network discussions by identifying the seven OSI layers and their place in the communication framework.
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Related concepts
- TCP/IP protocol suitecontrasts with · The TCP/IP protocol suite is a layered family of networking protocols that enables addressing, routing, transport, and communication across interconnected networks.
- networking modelkind of · A networking model is an abstract framework that organizes the functions and layers involved in communicating data between network endpoints.
- separation of concernsuses · Separation of concerns is a design principle that organizes a system so distinct responsibilities are handled by separate, independently manageable parts.
- data link layerhas part · The data link layer is the network-model layer that provides frame delivery and link addressing between nodes connected by the same physical or logical link.
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