Better Revision Flashcards
What does LAN stand for
Local Area Network
What does WAN stand for
Wide Area Network
What does PAN stand for
Personal Area Network
Where would you find a LAN
In an Office building or school
What is an example of PAN
Bluetooth
Advantages of wired networks
More secure
Disadvantage of Wired Networks
Not much mobility
Advantage of wireless networks
Able to move around and use wifi
What does HTTPS stand for
HyperText Transfer Protocol
What is the difference between HTTPS and HTTP
HTTPs is a lot more secure and protects your information
What does FTP do
uploads or downloads a file
What does SMTP do
Used to send an email
What does POP do
Downloads the email to the device
What does IMAP do
It is used to access your registered emails on your server
WHAT are the 4 layers of TCP/IP stacks
Application
Transport
Internet
Link
What does application do in TCP/IP stacks
The application layer is where data is sent from software applications into the protocol stack
What does Transport do in TCP/IP stacks
The transport layer breaks the application data down into data packets
What does Internet do in TCP/IP stacks
The internet layer prepares the data for the internet. Source and destination IP addresses are added at this stage in a header.
What does link do in TCP/IP stacks
The link layer is responsible for transporting IP packets across each of the individual links that make up the path between two communicating computers.
What is a disadvantage of the bus topology
If 2 devices send data at once it can cause a collision and neither data packet is received
What are the advantages of Bus Topology
If one device is compromised the whole thing keeps working
It is cheaper as you don’t need as many cables to make the topology work
What is needed for a bus topology to work
Terminators
What is the advantage of Ring topology
There are no collisions as the data travels in one direction
What is a disadvantage of Ring topology
If one device is compromised the network stops working
