Cordless phones
Yes. Since the signal is beamed from space, anything in the path of it, even smoke/heavy cloud cover, can cause interference.
No the network simulator software will not cause any problems.
No. A steel plate in one's head cannot cause interference with a computer.
faulty NIC in the web server
It is very rare for radio was to cause interference with the Kichler under-cabinet lights. If it does cause interference I would call the people who installed it or if you did it yourself find the local dealership and have a talk with them.
The 1.8L is not an interference engine, so you should not have internal damage. The 2.0L is an interference engine. Internal engine damage is likely.
It wasn't discovered, it was developed back in the days of mechanical typewriters as the pattern least likely to cause interference between the different letters as they were pushed against the paper.
interference
Not all 4 cylinder engines are interference. When the timing belt breaks in an interference engine the valves can cause serious damage.
The most likely cause for any type of line protocol being down is that a network administrator used the shutdown command on these lines to prohibit access to telnet, ssh and connection to the line con 0.
a wasp flying in the room
The command is bad configurate.