Automatically Ending Non-Responsive Tasks

When some applications running in our pc suddenly may be not

*Start Regedit (RUN)
*Go to HKEY_CURRENT_USER\Control Panel\Desktop\AutoEndTasks
*Set the value to be 1
*In the same section, change the WaitToKillAppTimeout to the number of milliseconds you want.

some time you may have to installany registery files that you can download:
that file name is
end_tasks.rge

Hub, Switche and Router

Hub
*Hub can not recognize destination address of a packets, so it is slower because of packet unnecessarily send all computer in a network
*Do not support concurrent send and receive operation
*Cheaper then switches and routers
*Work on broadcasting methodology, So lot of traffic on the network that can lead to poor network response times

Switch
*Identify packet receiver address and forward only to them
*support concurrent send and receive operation
*Costly then hub and cheaper then routers
*Better network response time then hub
*Works on Data link layer and Network layer of OSI model

Router
*Connect two network either LAN or WAN
*It rout packet rather then transmit to computers link switch and hub
*Ensure proper delivery of packet.
*expensive than hubs and switches.