*NETWORK INTERFACE CARD -
+PUTS THE DATA INTO PACKETS TRANSMITS PACKETA ON TO THE NETWORK
+MAY BE WIRED OR WIRELESS
Monday, 24 August 2015
ROUTER
*A DEVICE THAT CONNECTS ANY NUMBER OF LANS
*USES STANDARDIZED PROTOCOL TO MOVE PACKET EFFICIENTLY TO THEIR DESTINATION.
*MORE SOPHISTICATED THEN BRIDGES CONNECTING NETWORK OF DIFFERENT TYPES (FOR EXAMPLE STAR AND RING)
*FORWARDS DATA DEPENDING ON THE NETWORK ADDRESS (IP) NOT THE HARDWARE (MAC) ADDRESS
*ROUTERS ARE THE ONLY ONE OF THESE FOUR DEVICES THAT WILL ALLOW YOU TO SHARE A SINGLE IP ADDRESS AMONG MULTIPLE NETWORK
*RESIDES ON LAYER 3 OF THE OSI MODEL
`
*USES STANDARDIZED PROTOCOL TO MOVE PACKET EFFICIENTLY TO THEIR DESTINATION.
*MORE SOPHISTICATED THEN BRIDGES CONNECTING NETWORK OF DIFFERENT TYPES (FOR EXAMPLE STAR AND RING)
*FORWARDS DATA DEPENDING ON THE NETWORK ADDRESS (IP) NOT THE HARDWARE (MAC) ADDRESS
*ROUTERS ARE THE ONLY ONE OF THESE FOUR DEVICES THAT WILL ALLOW YOU TO SHARE A SINGLE IP ADDRESS AMONG MULTIPLE NETWORK
*RESIDES ON LAYER 3 OF THE OSI MODEL
`
REAPEATER
*USED TO BOOST THE SIGNAL BETWEEN TWO CABLE SEGMENTS OR WIRELESS ACCESS POINTS.
*CAN NOT CONNECT DIFFERENT NETWORK ARCHITECTURE.
*DOES NOT SIMPLY AMPLIFY THE SIGNAL IT REGENERATES THE PACKET AND RETIMES THEM.
*RESIDES ON LAYER 1 OF THE OSI MODEL
*CAN NOT CONNECT DIFFERENT NETWORK ARCHITECTURE.
*DOES NOT SIMPLY AMPLIFY THE SIGNAL IT REGENERATES THE PACKET AND RETIMES THEM.
*RESIDES ON LAYER 1 OF THE OSI MODEL
BRIDGE
*CONNECTS TWO LAN AND FORWARD FOTR FILTER DATA PACKETS BETWEEN THEM.
*CREATES AN EXTENTED NETWORK IN WHICH ANY TWO WORKSTATIONS ON THE LINKED LAN CAN SHARE DATA.
*TRANSPORT TO PROTOCOL AND TO HIGHER LEVEL DEVICES LIKE RATES.
*FORWARD DATA DEPENDING ON THE HARDWARE (MAC) ADDRESS NOT THE NETWORK ADDRESS (IP)
*RESIDES ON A LAYER 2 THE OSI MODEL
*CREATES AN EXTENTED NETWORK IN WHICH ANY TWO WORKSTATIONS ON THE LINKED LAN CAN SHARE DATA.
*TRANSPORT TO PROTOCOL AND TO HIGHER LEVEL DEVICES LIKE RATES.
*FORWARD DATA DEPENDING ON THE HARDWARE (MAC) ADDRESS NOT THE NETWORK ADDRESS (IP)
*RESIDES ON A LAYER 2 THE OSI MODEL
SWITCH
*SPILT LARGE NETWORK INTO SMALL SEGMENTS DESCRASSING THE NUMBER OF USER SHARING THE SAME NETWORK RESOURCES AND BANDWIDTH
*UNDERSTANDS WHEN TWO DEVICES WANT TO TALK TO EACH OTHER ,AND GIVES THEM A SWITCH A CONNECTION
*HELP PREVENT DATA COLLISIONS AND REDUCE NETWORK CONGESTION IN CREASING NETWORK PERFORMANCE
*MOST HOME USER GET VERY LITTLE IT ANY ALL VANTAGE FROM SWITCHES EVEN WHEN SHARING A BROADBAND CONNECTION
*RESIDES ON A LAYER2 THE OSI MODEL
*UNDERSTANDS WHEN TWO DEVICES WANT TO TALK TO EACH OTHER ,AND GIVES THEM A SWITCH A CONNECTION
*HELP PREVENT DATA COLLISIONS AND REDUCE NETWORK CONGESTION IN CREASING NETWORK PERFORMANCE
*MOST HOME USER GET VERY LITTLE IT ANY ALL VANTAGE FROM SWITCHES EVEN WHEN SHARING A BROADBAND CONNECTION
*RESIDES ON A LAYER2 THE OSI MODEL
Saturday, 22 August 2015
HUB
* an unintelligent network device that sends one signal to all of the stations connected to it
*traditionaly hubs are used for star topology network but they are often used with other configuration to make it easy to add and remove computers without bringing down the network
*all computer devices are competing for attention
because if takes the data that comes into a part and sends it out all the poot i hub
*traditionaly hubs are used for star topology network but they are often used with other configuration to make it easy to add and remove computers without bringing down the network
* hub work on layer 1 of the osi model
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