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Video of How the TCP/IP Model Actually Works CCNA Day 3 in Cisco CCNA course by Jeremy's IT Lab channel, video No. 6 free certified online
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0:00 Introduction
1:45 Protocols and Standards
3:27 A bit of history
5:07 Who defines the standards?
7:08 Layered models
9:45 Analogy: sending a letter
11:31 Analogy: building a model
13:03 Analogy: separation of layers
14:43 The TCP/IP model
19:57 Layer 1: Physical Layer
21:14 Layer 2: Local Network layer
23:19 Layer 3: Internet layer
24:24 Layer 4: Transport layer
26:03 Layer 5: Application layer
27:48 Encapsulation & decapsulation
31:06 Protocol data units
33:11 Adjacent-layer interaction
34:19 Same-layer interaction
35:04 Separation of layers
36:14 The OSI model
38:36 Other versions
39:34 Review
40:52 Outro
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