Computer Unit 2 Operating Systems and Networks

what does LAN stand for

local area network

what is required to access a public wifi network using your computer or smart device

one must be within range of the public wifi signal

what are clients

people who rely on the servers for resources and acces to files

explain the pros and cons of using a private home network for accessing the internet

pros: better security, more reliable than public wifi, internet speed can be purchased from an ISP cons:not as convenient as public, cost of internet

what are the pros and cons of using public wifi to access the internet

pros: convenience, free access cons: lower speed, more advertising, less secure

private network

restricts access to networks using private passwords

what is the device called that serves as a gateway to transfer data between networks

router

what is an example of a LAN

school computers

computer firewall

security software that protects from hackers

https url

shows that a site is encrypted

firmway

software embedded in hardware

what is an operating system

software that manages how hardware and software work together and talk to each other

what does a file extension do

tells the operating system what type of program it needs to open, view, print, or edit a particular file

how is accessing the internet through a home network and public wifi different

the ease of access is different

snooping

when hackers listen in on wifi signals

what does WAN stand for

wide area network

public wifi

wifi that can be accessed by the general population

list three ways computers can be networked together

wifi, wired, and 3G/4G

wifi

wireless fidelity, uses radio waves to pass info

why is it important to organize files

to find files efficiently

what is a domain named used for

to represent IP adresses

name four functions an operating system controls

to schedule tasks running applications controlling input and output devices interface between the user and the computer

client server networks can handle large amounts of information true or or false

true

what are five risks that should be avoided when using a home router

using the default password, using the wrong encryption code, using outdated internet accessible services

what is a peer to peer network

computers that share resources and share equal control over resources

encryption

converts data into unreadable code so data can be sent safely

what is the difference between a LAN and a WAN

LAN is close together, WAN covers large areas

list the file extension next to the file type

audio file format - .mp3 video file format - .mp4 apple quicktime movie - .mov image file format - .jpg microsoft excel document - .xlsx compressed (zip) files - .zip

lynnandperry.com is an example of what

domain name

how is accessing the internet through a home network public wifi similar

both allow internet access

what are some precautions you can take with your router to reduce the risks of associated with accessing the internet

change the password, use best encryption, install latest firmware , replace old routers, and disable internet accessible services

isp

a company that offers servuces for using the internet

what is a server

a computer that is dedicated to provide a certain service and manage resources

router

a device that transfers data between networks

modem

a device that transmits digital data over analog lines

what is a network

a group of computers that are connected together in order to share resources and info quickly and efficiently

file and printer sharing

allows one computer to share files with another computer

69.147.76.15 is an example of what

an IP Adress

what is file explorer

an application used for accessing files

what are some of the dos and dont's of using public wifi

dont's: enter personal info, auto connect, do's: only visit encrypted sites, sign off, install latest updates, use a firewall, turn off file and printer

what are four risks of using public wifi network

harmful software attacks, snooping, man in the middle attacks, rogue public wifi

what does ip address stand for, and what does it do

helps a computer find other computers on a network

peer to peer networks are often used to connect two or more computers to a shared device like a ___ or a ___

home or a small office

what is the largest WAN in the word

internet

label the following diagram

internet > isp > utility lines > modem > router > computer