BUS, STAR, RING Flashcards
RING NETWORK
-Nodes are connected in a loop
-Each node is connected to 2 other adjacent nodes
-There is no file server
-The node in procession of the token can transmit data
-The token is passed from node to node until it reaches its intended recipient
-Data travels in one direction only
-No collision risk
BUS NETWORK
-All nodes connected directly to backbone(main cable)
-Data can be transmitted in both directions
-A node transfers data directly to another node by putting it on the backbone
-Terminators are positioned at both ends
STAR NETWORK
-There is a hub
-Each node is connected to the hub by its own cable
-The hub controls all communications on the network
-The hub controls transfer of data packets
-A node communicates with another node via the hub
EVALUATE BUS
-Not secure as every node on network sees all the data on the network
-If node fails network can still operate
-If backbone fails all communication is affected
EVALUATE RING
-Less secure as data is sent node to node until it reaches recipient
-Tough to add new nodes
EVALUATE STAR
-Most secure as the server sends data directly to the intended node
-server can still operate if one node fails
-Easy to add new node
-If hub malfunctions then whole network fails