The OSI Reference Model
Hình ảnh Protocols in relation to the OSI model.doc
Tài liệu The OSI Model: Understanding the Seven Layers of Computer Networks ppt
Tài liệu Stuff - The OSI Model pptx
SANS Institute InfoSec Reading Room: Applying the OSI Seven Layer Network Model To Information Security pptx
c# 3.0 the complete reference (3rd edition)