Course Content
01 Communication Methods
How is data transmitted across a network?
02 Communication Basics
What are the factors that affect data transmission?
03 Network Topology
How are topologies commonly used in networks today?
04 Types of Networking between hosts
What are peer-to-peer and client-server networks?
05 Wireless Networking (Part 1)
How are wireless networks built?
06 Wireless Networking (Part 2)
How do wireless networks operate?
07 The Internet and how it works (Part 1)
How is the internet structured?
08 The Internet and how it works (Part 2)
How are resources located on the internet?
09 Internet Security (Part 1)
How do internet security techniques operate?
10 Internet Security (Part 2)
How is the internet threatened and how can it be better protected?
11 TCP/IP
How is the TCP/IP stack structured?
0/7
Why Layering
06:30
The TCP/IP Stack
07:41
The TCP/IP Stack Notes
Sockets and MAC Address
03:37
Sockets and MAC Address Notes
00:00
TCP/IP Stack Quiz
TCP/IP Assignment
12 Standard Application Layer Protocols
What are the standard protocols in the application layer and what are they used for?
0/7
TCP/IP Revisited
04:47
Application Layer
08:17
The Application Layer Notes
Sockets and Transport Layer
04:32
Sockets and Transport Layer Notes
Application Layer Quiz
Standard Application Protocols Assignment
13 The Network Layer
What are the IP protocol standards?
0/10
The TCP/IP Stack Revisited
04:47
Internet Protocols Explained
05:15
Internet Protocols Explained Notes
IP Classes and subnet masks
12:41
IP Classes and subnet masks notes
Subnetting
06:32
Subnetting Notes
Private and Public IP
00:00
Private and Public IP Notes
00:00
The Network Layer Quiz
14 DHCP and NAT
How are networking addresses assigned and used?
0/6
The DHCP Role
The DHCP Role Notes
NAT Revisited
NAT and Port Forwarding Notes
DHCP and NAT and Port Forwarding Quiz
DHCP NAT and Port Forwarding Assignment
15 Client Server Model ,Thin and Thick Client Computing
What is the difference between thin-client computing and thick-client computing?
0/8
Client Server Model
Client Server Model Notes
JSON and XML
JSON vs XML Notes
Thick and Thin Client
Thick and Thin Client Notes
Client Server, Thin Thick Client Computing Model Quiz
Client Server Thin Think Client Computing Assignment
Fundamentals of Communication and Networking – COMING SOON
About Lesson

The TCP/IP Stack Revisited

The four-layer of the TCP/IP stack are:

  • Application – Network processes and application
  • Transport – Inter-host communication, break data into packets
  • Network – Route packets through the network
  • Link – Access to the network

On the sending end, each layer prepends header information and the corresponding layer on the receiving end take off, interpret and make sense of the pre-pended data.

Data going down the stack and each layer adding header data.

Tcp/ip stack down the stack

The data is then transmitted on the physical medium

The tcp/ip stack bits on the link layer

The corresponding layer on the receiving end reads and act on the header information 

Packet traversing the the stack

Creating this virtual inter-layer communication

Virtual layer to layer communication

 

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