No thanks but Happy Mother’s Day!!!
1. telephone
2. Telegraph machine
This is true, A firewall is used to get rid of viruses and attackers and keep them out of your computer. But if not properly implemented can do next to nothing for you.
Let's assume a condition where ram is 256 MB and the program size is more than 256 MB
in that case, CPU has to wait for I/O to load the remaining part of the program..in this case
CPU utilization is much poorer.
So adding gives benefit only when your CPU is fast enough to take advantage like if a process waiting for I/O
it can put the current process in the run queue and take another process from the ready queue.
This way a better CPU utilization can be achieved.
So by adding ram we can load more programs while waiting for I/O . CPU utilisation will be better.
here by adding 2GB ram we can load 2048/256 = 8 new process into ram at the same time.
2. if cpu have to execute the cpu bound process that wait for I/O cpu will be idle most of the time while
waiting for I/O to be done..this way CPU utilization will be poorer as compare to earlier.
