Comp Sci Internet

latency

amount of time it takes for a request to be processed and a response to be returned

bandwidth

amount of data that can be transmitted over a network in a given amount of time

protocl

set of rules and standards that govern the format/timing/sequence of communication between devices on a network

ISP

internet service provider, connect users over a network

broadband

high-speed internet connection capable of transmitting large amounts of data in a short amount of time

internet of things

network of physical devices embedded with electronics which enable them to connect and exchange data

cloud computing

model for resource storage and accessibility on a pay-as-you-go basis

IP address

numerical label assigned to each device connected to a computer newtork that uses IP for communication

DNS

domain name system, hierarchical and decentralized naming system for devices connected to the internet (url -→ ip address)

nat

network address translation, technique used to remap one IP address space into another by modifying network address information in the IP header

TCP

primary transport layer protocol used to establish a reliable connection between devices on a network

packets

unit of data that is transmitted over a network (consists of a header and payload)

HTTP

web’s application layer protocol, involves the client who requests and the server that sends

the request

HTTPS

secure version of HTTP, establishes an encrypted connection between a web server and a web client to verify the website’s identity

UDP

user datagram protocol, transport layer protocol used to send and receive data over a network (connectionless and unreliable but fast and lo stakes)

SSL

secure sockets layer, establishes secure and encrypted links between networked computers (replaced by TLS)

TLS

cryptographic protocol used to secure communications over a network

router

traffic control of packets, forwards packets between networks using routing tables and protocols

redundancy

presence of multiple copies of backups of data/systems to ensure their availability and reliability in case of failure

phishing

type of online fraud used to steal sensitive information via fake access points designed to look real

keylogging

practice of tracking and recording the keys pressed on a computer keyboard, has a wide variety of applications both good and bad

rogue access points

unauthorized wireless access point that has been installed on a network, can steal sensitive information and conduct man-in-the-middle attacks

digital certificate

public key certificate used to identify an individual, organization, or device on the internet

certificate authority

companies that use digital certificates to trusted individuals to let others know what is safe

distributed computing

type of computing architecture where multiple computers work together to perform a task or solve a problem