What input and output devices would you use for the following systems? chose 3 of
the 5 systems and for each, compare and contrast alternatives, and if appropriate
indicate why the conventional keyboard, mouse and normal screen may be less
suitable.
a) portable translator (from one to another language)
b) car driver information system
c) airborne fire-fighting controller
d) ship traffic control system
consider following input devices: lightpen, touchscreen, stylus, mouse, trackball, joystick, trackpoint, touchpad, graphic tablet, keyboard, mouse
output devices: printer, lcd, led, vdu

Usually, when we sniff packets, we are only interested certain types of packets. we can do that by setting filters in sniffing. scapy’s filter use the bpf (berkeley packet filter) syntax; you can find the bpf manual from the internet. set the following filters and demonstrate your sniffer program again (each filter should be set separately): (a) capture only the icmp packet. (b) capture any tcp packet that comes from a particular ip and with a destination port number 23. (c) capture packets comes from or to go to a particular subnet. you can pick any subnet, such as 128.230.0.0/16; you should not pick the subnet that your vm is attached to.

In excel - calculate the actual increase/decrease from first quarter to the second quarter then subtract subtract first quarter value from second quarter total then divide result by first quarter value

Plz ( which is an example of a good url?