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using the default password, using the wrong encryption code, using outdated internet accessible services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