CS计算机代考程序代写 database FTP Introduction to Web Development

Introduction to Web Development
Topic 1: Web Dev and How the Web Works
The Internet Ecosystem
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The Internet Ecosystem
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History
And Definitions
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Definitions and History
A Short History of the Internet
• Telephone Network
• Packet Networks
• ARPANET (1969)
• X.25 (1974)
• USENET (1979)
• TCP/IP (1983)ßINTERNET
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Definitions and History
The Internet and WWW are different (but related) things
Email
Online gaming
FTP
Internet
Web
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Definitions and History
The Birth of the Web (1990)
1. URLS
2. HTTP
3. SERVERS
4. BROWSERS 5. HTML
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Definitions and History
The Growth of the Internet
Source: statista.com
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Definitions and History
Web Applications in Comparison to Desktop Applications Advantages:
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Definitions and History
Web Applications in Comparison to Desktop Applications Disadvantages:
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Definitions and History
Web 2.0 and Beyond
• Web 2.0 Dynamic
• Web 3.0 Semantic
• Web Science •…
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The Client-Server Model
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The Client-Server Model
The Request-Response Loop
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The Client-Server Model
The Peer-to-Peer Alternative
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The Client-Server Model
Server Types
• Web Servers
• Application Servers
• Database Servers
• Mail Servers
• Media Servers
• Authentication Servers •…
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The Client-Server Model
Real-World Server Installations – Server Farm
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The Client-Server Model
Real-World Server Installations – Server Rack
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The Client-Server Model
Real-World Server Installations – Data Center
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The Client-Server Model
Real-World Server Installations – Data Center Case: Google’s Data Centers
• As of 2020, thirteen data center locations in the U.S., one in South America, five in Europe and two in Asia.
• also has many caching sites in colocation facilities, locations unknown.
• Physically anywhere from 200,000 square feet to 1,000,000 square feet
• As of the end of 2020, these data centers contained over 3 million servers
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Where is the Internet?
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Where Is the Internet?
From the Computer to the Local Provider
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Where Is the Internet?
(Simplified) Routing Tables
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Where Is the Internet?
From the Local Provider to the Ocean’s Edge
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Where Is the Internet?
From the Local Provider to the Ocean’s Edge –IXP and Data Centers
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Where Is the Internet?
Across the Oceans
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Web Development
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Web Development Overview
Roles and Skills
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Web Development Overview
Roles and Skills
• Hardware Architect/Network Architect/Systems Engineer
• System Administrator
• Database Administrator/Data Architect
• Security Specialist/Consultant/Expert
• Developer/Programmer
• Front-End Developer/UX Developer
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Web Development Overview
Roles and Skills (II)
• Software Engineer
• UX Designer/UI Designer/Information Architect
• Tester/Quality Assurance
• SEO Specialist
• Content Strategists/Marketing Technologist
• Project Manager/Product Manager
• Business Analyst
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Working in Web Development
Types of Web Development Companies
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