OSI Reference Model Layer Summary

The The Open System Interconnection Reference Model is some thing that should be completely learned and memorized.  Pretty much just read the chart a couple of times and try to learn it so that when you are asked you can have a quick response.

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History of CRYPTOGRAPHY

Key

Cryptography can be defined as the conversion of data into a scrambled code that can be deciphered and sent across a public or private network. Cryptography is far more than helping keep integrity of the communications. It has evolved into a tool used in communications in a daily bases. Here is basic introduction to Cryptography.

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Security Architecture & Design / Security Access Control Models

Security Architecture include models to follow to design a security oriented network infrastructure. They will depend on the need of security classification. Each model will be focus on a specific area of the security tria Confidentiality, Integrity and Availability.

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