computers chapter 3
Local Area Network (LAN)
A group of computers within a building or buildings that can share resources like printers files, applications, internet access
Http
Hypertext Transfer Protocol
how websites and computers are identified hard to remeber so we use domain names
IP address
IP
Internet Protocol
spans a city, connecting various government offices/buildings
Metropolitan area network (MAN)
web browsers
Microsoft edge internet explorer mozilla firefox google chrome apple safari
string of text used to identify and locate a website or web page (its like the address on your house) a domain name is part of a URL used to load a specific page start with a series of letters that indicate which protocol to use
URLs
Computer Network
a collection of computers that can communicate to each other
domain names
a string of text that identifies a website Ex. Google.com must be purchased from domain registrar
Domain Name Service (DNS)
an internet service- translates a domain name to its IP address
browser address bar
back/forward buttons refresh button to reload page
internet services that I use
browsing the web voice and video email texting
spans a college campus across multiple buildings
campus area network (CAN)
google chrome
chromebooks/androids
radio buttons
circles where you can only pick one answer
microsoft edge
comes with windows
network
controlled by one central database like a network on a college campus or office building
does not rely on a web browser or the web- it works without a web browser must install software (Microsoft office includes outlook) it is used only for email, calendaring, and contact management- not for browsing web pages) popular email clients are -microsoft outlook -windows -Apple Mac mail -mail on tablets and smartphones
dedicated email client
has more features and options that webmail doesn't have can store all messages on your computer
dedicated email client advantages
Dropdown menu
displays a list of options for you to choose from
Reference at least 3 different sites as sources Not everything you read in true Only use wikipedia as a starting point, but don't take as the truth Note the cited sources at the bottom of a wikipedia article and check them out yourself
effective online searches
grocery store, doctors office, bank, emergency services, schools, dispatch, and airlines
examples of computer networks
public networks
free wifi at restaurants, airports, and book stores
a single home- all computers and mobile devices share an internet connection, files and printers may be shared
homes networks
traditional internet serivice provider (ISP) mobile ISPs (mobile devices) you must go through an internet service provider to access the internet- your ISP will provide an IP address
how can you connect to the internet?
check lights, plugs, physical switches, cables, lights on modem and router, wifi connection, and airplane
how do you trouble shoot?
as small as two to any number
how many computers make up a network?
apple safari
iPhone/apple
any network where computers can communicate with each other
local area network (LAN)
newsgroups
need a news or UseNet client
Domains
network controlled by one central database or way to identify websites by name
Always use an up-to-date antivirus Only purchase from reputable merchants Never buy anything unless the address bar shows https or la locked padlock icon Avoid typing passwords or logging into any website of which your are member or where you hold and account on a public network
network security measures that yo should make
Mozilla Firefox
not tied to any operating system but another example of web browser
Internet Explorer
older version of edge
require login credentials, users can only access it by joining the network and losing into it as members. private networks are safer and more secure
private network
open to everyone, don't have to join or login with username or password, considered insecure
public network
Instant Message (IM)
require an instant message
forms
section of web page that allows you to enter information online ordering uses it text boxes, checkboxes, and menus are standard elements
requires specialized software
skype, apple facetime, newsgroups, IMs, file transfer protocol
more advanced sharing capabilities than regular home network
small office home office (SOHO) network
Test connectivity using the ping command from command prompt Determine your connection speed Before calling ISP for tech support, check two speeds Downstream and upstream- Speedtest.net
steps to verify you internet connection?
Internet services
the World Wide Web, used to view pages and websites, voice and video communication, FaceTime and Skype, instant messaging, email, texting, newsgroups, bulletin boards, file transfer protocol (FTP)
computer network (WAN) spanning the globe connecting other networks to each other, no-one owns the internet but certain companies control access to the internet or provide internet services such as email
the internet
Bookmarks/favorites
two names for things that save pages or frequently visited websites for future reference
URLs
uniform resource locator (web address)
skype
used for video and voice commands
Private network
used in business or government offices
apple facetime
used on iphones and ipads (google dou for androids)
File Transfer Protocol (FTP)
used to upload web pages and items to the web, transfering files across the internet requires this other examples are filezilla or cuteFTP to create a website you have to use FTP
used to access the web, view web pages and websites
web browsers
accessed through google mail and yahoo mail
web mail (what we use)
no additional software is needed to install it can be accessed on any device connected to the internet emails are stored safely to the cloud
web mail advantages
microsoft edge google chrome apple safari mozilla firefox
what are some popular web browsers?
ipconfig
what command do you type to view IP address at the command prompt
secure
what does the s in https stand for?
spans a large geographical area and typically connects 2 or more LANS
wide ares networks (WAN)
traditional internet service provider (ISP)
wired connection to home or office with a cable (coaxial) or fiber connections comcast, AT&T, US cellular, cricket
