Studied by 1 person
What is circuit switching?
When a route is dedicated for the duration of the community of two individuals
What are advantages of circuit switching?
Packets are delivered in the correct order
Decreases user experiences before and during call
What are disadvantages of circuit switching?
Higher cost to use only one channel per use
Doesn’t use resources efficiently
What is packet switching?
Packet switching is when individual packets take different routes across a network
What are the advantages of packet switching?
the file being transmitted is a lot more secure
disadvantages of a packet?
bandwidth is wasted during the period of time in which no data is sent
Must wait until all packets arrive before data is received
What is the contents of a packet?
Header
Footer
Ip address
Source address
The protocol
What is serial transmission?
Serial data is whensungle buts are sent one after the other along a single wire
Describe simplex transmission method
Data only travels in one direction meaning no packets are returned
What is half duplex transmission?
Transmission of data in either direction but not simultaneously
What is full duplex transmission?
Transmission of data in both directions simultaneously
Describe half duplex and duplex cable methods
Ethernet cable might have two pairs for uploading and for downloading. So the packets travelling in opposite directions don’t interfere with each other
What is multiplexing?
Involves taking multiple data streams and combining them to send across a single wire.
When data reaches its destination the single stream is split back into original streams
Why is multiplexing beneficial?
Save on costs
Increase transfer speeds in some circumstances
Good for linking serial and parallel transmissions
What is routing traffic?
When data is transferred over a network’s routing determines the path each data packet takes, ensuring packets are delivered quickly
How are network collisions dealt with?
Pc takes turns to send their packets
Priorities policy(one device always send a data first)
Note 
Flashcard (28)