Ap BS Internet

Internet

a global network of computing devices communicating with each other in some way, whether they're sending emails, downloading files, or sharing websites.

Computer network

Any group of interconnected computing devices capable of sending or receiving data

Computing device

Not just a computer—it's any device that can run a program, such as a tablet, phone, or smart sensor

Path

The connections between computing devices on a network starting with a sender and ending with a receiver

Network topology

The physical and logical arrangement of devices and connections in a network

LAN (local area network)

A computer network that covers a limited area like a house or school

WAN (wide area network)

A network that extends over a large geographic area and is composed of many, many LANs

Data Center Network (DCN)

A network used in data centers where data must be exchanged with very little delay

Copper Cable

Cables that transmit bits via electricity

Fiber Optic Cable

Cables that transmit bits via light

WiFi

Transmits bits via radio waves

Ethernet cable

A network cable used for wired connections to the Internet

Bit

A "Binary Digit"; the single unit of information in a computer, typically represented as a 0 or 1

Bit Rate

The number of bits that are conveyed or processed per unit of time, e.g. 8 bits/sec

Latency

Time it takes for a bit to travel from its sender to its receiver

Bandwidth

The maximum amount of data that can be sent in a fixed amount of time, usually measured in bits per second

Internet Service Provider (ISP)

A company that provides subscribers with access to the internet

Wires & wireless

Physical connections between devices, plus protocols for converting electromagnetic signals into binary data

IP

A protocol that uniquely identifies devices using IP addresses and provides a routing strategy to send data to a destination IP address

TCP/UDP

Protocols that can transport packets of data from one device to another and check for errors along the way

TLS

A secure protocol for sending encrypted data so that attackers can't view private information

HTTP & DNS

The protocols powering the World Wide Web, what the browser uses every time you load a webpage

Protocol

A well known set of rules and standards on how to handle the information

Internet Protocol (IP)

A protocol that uniquely identifies devices using IP addresses and provides a routing strategy to send data to a destination IP address

HTTP (Hypertext Transfer Protocol)

The set of rules for transferring files—such as text, images, sound, video and other multimedia files—over the web

IETF (Internet Engineering Task Force)

A group that develops and promotes voluntary Internet standards and protocols, in particular the standards that comprise the Internet protocol suite (TCP/IP)

TLS

Secure protocol for sending encrypted data so that attackers can't view private information

Domain Name System (DNS)

A system that can associate names with corresponding addresses

World Wide Web

Refers to all the public websites or pages that users can access on their local computers and other devices through the internet

Redundancy

The inclusion of extra components so that a system can continue to work even if individual components fail, for example by having more than one path between any two connected devices in a network

Fault Tolerant

Can continue to function even in the event of individual components failures. This is important because elements of complex systems like a computer network fail at unexpected times, often in groups