Learning Aim B Flashcards
what is a network
When we link a bunch of computers which are connected to share data or information
How could data be transmitted
normally transmitted data through an input and output device. (normally through a keyboard and monitor)
How would a computer connect to the internet
can be done between wires, radio waves and other types of ways
What does Synchronise mean when transmitting data
Match up and pull together. E.g. making sure multiple devices have the same copy of relevant files
What does Bandwidth mean in transmitting data
Available amount of data transmission capability
What is meant by fibre optics when transmitting data
collections of fine silica strands which use light to transmit data at high speeds
What is meant by 4G
4th generation, accessing internet at high speeds via mobile
What does it mean for something to be hardwired
Permanent connection between components of IT system
Computers and electronic devices are now able to connect to each other what are examples
Smart TV or Garmin watch
How could hackers be a problem for peoples security
That although with systems security being on the news and is in a constant concern for businesses we only have some capability to protect ourselves against threats with use of software and passwords. Hackers might be able to get through still.
How could organisation work in the idea of security
That there are places that have a lot of person details (EG Schools) in which they need to keep it sorted neatly as well as making sure that the information doesn’t reach the public
How is it possible to share data between devices
The devices need to be synced up to each other
When making sure that devices are being connected you can connect them via: wired, Bluetooth and the internet but what are some other ways
USB - USB
VGA, HDMI and display ports
Parallel - connects printers over short distance
Serial - communication of devices such as a modem and accessibility devices
What is currently the fasted Wi-Fi at the moment
Broadband (Fibre optic)
When would a wired system frequently be used
When connecting devices together. EG computer to server. BRoadband is connected through telephone cables however mobile broadband as their means to connect to internet
What is the advantages and disadvantages of wireless
AD - move about and still do the things you want
Dis - could be intercepted
What is the advantages and disadvantages of hardwired
Ad - its faster
Dis - stuck in one place
What is an ISDN
Integrated services digital network
What is an intranet
Local network website where across is restricted to internal users, such as within an organisation
What is an Extranet
Intranet system which can be accessed by authorised external users to retain data security
What is a CPU
Central processing Unit what acts as the computers brain to process instructions
What is meant by the term encrypting
Converting data into code to avoid it easily begin accessed by unauthorised users. Specialists software is used to encrypt data
A computer network is a …
telecommunication network which allows nodes to share resources. It is the exchange of data between computers and the personal using them. Connections can be wired or wireless but most businesses have a network set up, employees then be able to access shared resources and potentially work remotely
What is an ethernet cable
Connect devices together on a network to transfer broadband data
