Networks & The Internet - All Flashcards
What does WAN stand for and what is it used for?
WANs stand for - Wide Area Network, A WAN covers a large geographical area for example the internet is a WAN.
How can you keep your data secure ?
making regular backups, using firewalls, anti virus software, data encryption and using passwords.
What is a bus network ?
In a bus network all the workstations, servers and printers are joined to one cable (the bus). At each end of the cable there is a terminator.
What is a ring network ?
In a ring network each device (workstation, server, printer) is connected to two other devices, this forms a ring for the signals to travel around.
What is a start network ?
In a star network each device on the network has its own cable that connects to a switch or hub. A hub sends every packet of data to every device.
What is a LAN?
Local Area Network, a collection of computers and peripheral devices connected together within a single site.
State two advantages of connecting the computers into a LAN.
Advantage 1
Resources can be shared eg: files, printers, scanners
Advantage 2
Communication: users can communicate using email and messaging
State two additional hardware items which will be needed to create the LAN. For each, state why it is needed.
Item 1 Network Interface Card
Reason why needed It provides a port on the computer to connect a network cable to
Item 2 Server
Reason why needed It provides network services to the client computers such as storing shared folders and files
A small business has three stand‐alone computers, a printer and an internet connection in an office.
State two advantages of connecting the computers to create a local area network.
- So users on the individual computers can share files rather than having duplicate copies
- So staff can communicate using email
What does HTML stand for?
HyperText Markup Language
What are the features of HTML?
The programming language used to define the layout and content of a webpage.HTML is used to describe the page content.
What is an IP address?
Each device on the internet must have unique IP address so they can communicate over the wide area. The IP address is made up of four numbers separated by three dots, for example:193.127.30.23
Give an advantage of using DNS servers to translate domain names into IP addresses.
Humans do not have to remember or type in numerical addresses.
How exactly do you access websites on the Internet?
Websites on the internet have a URL which allow you to access the website by typing in the URL of a certain website and hitting enter. For eg. The URL for the BBC website is www.bbc.co.uk and if you type that in the URL box you can access the website that simple.
What is the Internet?
A worldwide network where computers and networks in geographically separate locations are connected together using a variety of communication links. Devices communicate using Internet Protocol (IP).
