01:198:170 Chapter Notes - Chapter 3.1: Web Server, Master Sergeant, Transmission Control Protocol
16 May 2018
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The Basics of Networking
●Internet is a network of networks
General Communication
●Communication types:
○Synchronous requires both sender and receiver to be active at the same time
■Ex: phone conversation
○Asynchronous the sending and receiving occur at different times
■Ex: postcards, email, text msg
●Communication Transmission methods (number of receivers):
○Broadcast a single sender and many receivers
■Ex: Radio broadcasting
○Multicast there are many receivers but the intended recipients are not the whole
population
■Ex: magazines covering specialized topics
○Point-to-point one specific sender and one specific receiver
■Opposite of broadcast and multicast
■Ex: txt msg
The Internet's Communication Properties
●Internet supports point to point asynchronous communication
●Fundamental feature of the Internet is that it provides a general communication "fabric" linking
all computers connected to it
○Ex: internet can act like a postal system but at electronic speed
○Skype
○Bc its possible to post a webpage or YouTube video that can be accessed by anyone, the
internet offers a form of broadcasting tat compared with radio or television
●Internet becomes more effective with each additional computer added to it
The Client/ Server Structure
●Most interactions over the internet use this protocol
A Brief Encounter
●When u click a web link, computer begins the process of accessing the page for you. At that
moment, ur computer enters into a client/server interaction. Yours is client computer and the
computer on which the web page is stored is the server computer aka a Web server
●Client
refers to any situation where one computer, the client, gets services from another
computer, the server
●As a result of the client request, the server sends page back over to the Internet, fulfilling the
request. Ends client/ server relationship
Many Brief Relationships
●Sever can handle many clients at a time
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Document Summary
Synchronous requires both sender and receiver to be active at the same time. Asynchronous the sending and receiving occur at different times. Broadcast a single sender and many receivers. Multicast there are many receivers but the intended recipients are not the whole population. Point-to-point one specific sender and one specific receiver. Internet supports point to point asynchronous communication. Fundamental feature of the internet is that it provides a general communication fabric linking all computers connected to it. Ex: internet can act like a postal system but at electronic speed. Bc its possible to post a webpage or youtube video that can be accessed by anyone, the internet offers a form of broadcasting tat compared with radio or television. Internet becomes more effective with each additional computer added to it. Most interactions over the internet use this protocol. When u click a web link, computer begins the process of accessing the page for you.
