ITEC50 Flashcards
a link or connection between two or more entities for the purpose of sharing resources
network
a collection of hardware and software connected to each other through a communication medium in order to share resources
computer networking
classifications of network (3)
LAN - Local Area Network
MAN - Metropolitan Area Network
WAN - Wide Area Network
basic building block of a computer network
LAN
can be a simple connection between 2 to 3 computers (connected by cable) or a complex connection (connection of 3 or more computers and peripherals)
LAN
these are multiple networks that are connected within the same city to form a citywide network for a specific company, government or industry. It is a collection of LAN within the city
MAN
has no geographical limit
WAN
can connect computers and other devices on opposite side s of the world
WAN
it is a global network of networks
internet
it is an inherently participative medium. Anybody can publish information or create new services
internet
it is a cooperative endeavor – no organization is in charge of the net
internet
analogy of internet (4)
- People / Cars – Digital Signals
- Roads – Telecommunication Lines
(Coaxial cable, Category 5 cable, Fiber optics) - Routers/ Switches
- Telecommunications Modes (Simplex, Half-Duplex, Full-Duplex)
People / Cars
Digital Signals
Roads
Telecommunication Lines
Routers
Switches
Telecommunications Modes
Simplex
Half-Duplex
Full-Duplex
how do i connect to the internet? (6)
- Computer
- Connection - Phone Line, Cable, DSL, Wireless
- Modem
- Network Software - TCP/IP
- Application Software - Web Browser
- Internet Service Provider (ISP)
connecting to the internet (3)
- Dial-up/modem
- Digital Subscriber Line (DSL)
- Wireless/satellite
uses a phone line and a modem. When you’re on, your phone is busy
dial-up/modem
runs through your phone line, but your phone line is available
digital subscriber line (dsl)
operates over radio waves
wireless/satellite
Services offered by the Internet (11)
Online Chat
File Transfer
File Sharing
Gaming
E-commerce
Social Networking
Publishing
Video on demand
Teleconferencing
Telecommunication
Voice Over Internet Protocol (VoIP)
a software that locates websites for you and allows users to “surf” the World Wide Web and view web pages
web browser
a software application that enables a user to display and interact with text, images, videos, music and other information typically located on a Web page at a website on the World Wide Web or a local area network
web browser
one of the most important part of your browser is where you type the address of a website
address bar
what is a URL?
Uniform Resource Locator
the unique identifier of a web page
URL
a specific character string that constitutes a reference to an Internet resource
URL
parts of URL
protocol, sub-domain, domain name, top-level domain, file path, and resource name
indicates that the browser and web server will communicate using Hypertext Transfer Protocol
https://
indicates a resource on the World Wide Web
www
identifies which computer (web server) hosts the site
domain name
denotes the name of a specific Internet area controlled by a company, school, or organization. Typical Domain names consist of some form of organization’s name and a suffix that describes the types of organization
domain name
Common URL Domain Name (11)
.gov
.edu
.org
.mil
.com
.net
.ph
.jp
.uk
.sg
.sa
.gov
government agencies
.edu
educational institutions
.org
non-profit organizations
.mil
military