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

Sockets and Transport Layer Notes

A Socket is one endpoint of a two-way communication link between two programs running on the network.  It is formed by combining the IP address with the port number.  If the IP address is 200.145.20.4 and the current application is running on port 4563.  The the socket would be:

200.145.20.4 : 4563

Sockets sits between the application and transport layer, it is what is used to connect both layers together.

Sockets connect the application and the transport layer together. 

There are two types of sockets, there are two protocols that run in the transport layer and hence two types of scokets.  TCP (transmission control protocol) socket and UDP (user datagram protocol) socket.

Here is a comparison between both and how they are used:

TCP Socket

Reliability: Highly reliable with error checking and correction. It ensure that data is sent and received in the correct order.

Connection: Connection-oriented. Connection is established before data can be sent.

Speed: Slower than UDP due to additional overheads.

Use Case: Accuracy and reliability is important

 

UDP Socket

Reliability: Less reliable, no guarantee of packet delivery, order or error checking.

Connection: Connectionless: data is sent without establishing a connection, leading to faster transmission.

Speed: Faster as there is no additional overheads.

Use Case: Speed and efficiency are more important than accuracy.

 

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