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