4.6.1: Skills integration Challenge-Analyzing the Applications and Transport Layers

Reflection: Can you make a diagram of the sequence of protocol events involved in requesting a web page using a URL?

Sender : HTTP --> TCP ; HTTP --> IP ; TCP ; HTTP --> Ethernet ; IP ; TCP ; HTTP --> Electric impulse


Receiver: (Cont.) --> Ethernet ; IP ; TCP ; HTTP --> IP ; TCP ; HTTP --> TCP ; HTTP --> HTTP

Where might things go wrong?
Things might go wrong in the Transport Layer or the Network layer, because those are Layers that are more prone to having an issue.

Compare and contrast DNS and HTTP, and UDP and TCP.

DNS is the alias for the website. Websites were originally suppose to be typed in through IP addresses. Instead of IP addresses, you can type in the "website" such as google.com

HTTP is Hyper text Transfer protocol. This is the protocol in which browsers come in.


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TCP  connection is connection based, its reliable, and it has flow control

UDP connection is connectionless, unreliable, but low overhead

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In this Lab, I observed how four different services work together in a network. the four services were DNS, UDP, HTTP, and TCP.