Networks
What device allows multiple computers in a home to share a single internet connection
router
What is video-conferencing?
A method of holding meetings online using audio and video.
What is a web browser?
The program we use to open and view web pages
A method to transfer data over short distances between devices without cables.
Bluetooth
What is a firewall?
Software or hardware that prevents unauthorized access to a network.
This type of network covers a single site, like a school or office
LAN (Local Area Network)
Give two advantages of video-conferencing
Saves travel time and costs; can meet employees worldwide quickly.
What is the Internet?
A global network accessible by anyone.
What is Wi-Fi / wireless internet
A hotspot is an area where this is available.
What is encryption?
Process of scrambling data so hackers cannot read it.
Unlike a LAN, this network covers large geographical areas and uses telecommunication lines
WAN (Wide Area Network)
Give two disadvantages of video-conferencing
May be less effective than face-to-face, time zone differences, technical issues (any two)
One method of payment over the internet.
Credit card / PayPal / bank transfer.
Name three devices that can communicate with a computer using Bluetooth.
Headphones, mouse, smartphone, tablet, printer (any three)
Two pieces of information used to protect access to a network.
User-ID and password.
This device sends data only to the intended device on a network, unlike a hub
switch
A difference between audio-conferencing and video-conferencing.
Audio-conferencing has sound only; video-conferencing has sound and video
What is a firewall
Software or a device that protects a network by checking all incoming data.
What is a WLAN?
A wireless network that uses microwaves or infrared instead of cables.
What is two-factor authentication?
Using two different methods to verify identity (e.g., password + code).
Give one difference between a LAN and a WAN
LAN is limited to one site; WAN covers large geographical areas.
Why might an organization prefer video-conferencing to face-to-face meetings?
Cheaper, faster, employees can work remotely.
How can an online store make payment details safe?
By using encryption / secure payment systems.
Give one advantage of Bluetooth
Give two advantages of a wireless network over a wired network
No cables needed / easy to connect
Mobility/flexibility; easier to install.
Name three ways a computer can check who you are using your bod
Fingerprint scan, face scan, eye scan.