THE INTERNET AND THE WEB
How the Internet Works
One of the Internet’s high-speed, long-
Backbone
distance communications links.
Transport-layer protocol that most Internet
Transmission Control Protocol (TCP)
applications use with IP.
An assigned address on the Internet for each
Uniform Resource Locator (URL)
computer.
TCP / IP
Sender Receiver
Application Identical Message
Application
Identical Packet Transport (TCP)
Transport (TCP)
Internet Protocol (IP) Identical Datagram Internet Protocol (IP)
Identical Frame
Network Network
Communication
Network
Routing Internet Messages
Sender → 1. TCP / IP breaks data into packet → 2. The packet travel from router to router
over the internet → 3. TCP / IP reassembles the packets into the original whole → Recipient.
How Internet Works
• IPv4 • I.P Address
• Internet Corporation for Assigned
Names and Numbers (ICANN)
Affiliation ID examples: - .com (business sites), .edu (educational site), .gov (govt sites)
How the Internet Works
One of the Internet’s high-speed, long-
Backbone
distance communications links.
Transport-layer protocol that most Internet
Transmission Control Protocol (TCP)
applications use with IP.
An assigned address on the Internet for each
Uniform Resource Locator (URL)
computer.
TCP / IP
Sender Receiver
Application Identical Message
Application
Identical Packet Transport (TCP)
Transport (TCP)
Internet Protocol (IP) Identical Datagram Internet Protocol (IP)
Identical Frame
Network Network
Communication
Network
Routing Internet Messages
Sender → 1. TCP / IP breaks data into packet → 2. The packet travel from router to router
over the internet → 3. TCP / IP reassembles the packets into the original whole → Recipient.
How Internet Works
• IPv4 • I.P Address
• Internet Corporation for Assigned
Names and Numbers (ICANN)
Affiliation ID examples: - .com (business sites), .edu (educational site), .gov (govt sites)
