Understanding the Internet: Structure and Protocols

Internet

Network of networks linking billions of devices.

ARPANET

Predecessor of the Internet, developed in the 1970s.

Vint Cerf

Co-creator of the Internet with Bob Kahn.

Bob Kahn

Co-creator of the Internet with Vint Cerf.

Distributed Packet-Switched Network

Network design allowing decentralized data transmission.

IP Address

Unique identifier for a device on the Internet.

IPv4

32-bit IP addressing scheme providing 4 billion addresses.

IPv6

126-bit IP addressing scheme with 340 undecillion addresses.

Domain Name System (DNS)

Translates domain names to IP addresses.

DNS Spoofing

Hacking technique altering DNS to redirect users.

Routers

Devices managing packet paths in a network.

TCP (Transmission Control Protocol)

Protocol ensuring reliable data packet transmission.

HTTP (Hypertext Transfer Protocol)

Protocol for transferring web page data.

HTML (Hyper Text Markup Language)

Language for structuring web page content.

URL (Uniform Resource Locator)

Address used to access resources on the web.

HTTP POST Request

Method for sending data to a server.

Secure Sockets Layer (SSL)

Protocol for secure internet communication.

Transport Layer Security (TLS)

Updated protocol for secure internet communication.

Digital Certificates

Credentials for establishing secure connections.

Fault Tolerance

System's ability to continue functioning despite failures.

Packet

Small unit of data transmitted over a network.

Binary Sequences

1s and 0s forming the basis of digital communication.

Network Scalability

Ability to grow without performance loss.