Communication and Networking Flashcards
(22 cards)
Wide area network (WAN)
a network connecting computers on different sites, possibly thousands of kilometers apart
PSTN
public switched telephone network
WAN transmission medium
fiber optic cable
Local area network(LAN)
a network connecting computers on the same room or a single building
which can be owned LAN or WAN?
LAN can be owned WAN cannot be owned
LAN transmission medium
Twisted Pair cable
Era of computing
1990
Internet
number of networks all connected together
Client-server
it is an architecture where a client runs an application provided by the server
Thin-client
client that only receives input and gives back output to the application
Thick-client
client that processes or carries out processing itself
Simplex mode
Data only flows one way
Half-duplex
Data flows both ways but not simultaneously
Full-duplex
Data flows both ways simultaneously
Broadcast
one to all communication
Multicast
one source to many destinations
unicast
one source to a single destination
bus topology
one shared link that connects all the devices
mesh topology
one direct link to connect devices
star topology
each end-system is connected to a central device
hybrid network
collection of connected LANS
bandwidth
amount of data that can be transmitted per second
