LAN:Local Area Network

Used to connect computers to a server or a router to get access to internet or may for file transfering between computers.

LAN's are restricted to a range of 100metres depending upon the carrier medium.

WAN:-Wide area Network

Function same as LAN but used for broader coverage of area.Usually till 10 -30 Km.

Also the data … Read more

TRAP is a non maskable interrupt i.e. It cannot be disabled.It is usually found in 8085 intel processors.

these interrupts are vectored interrupts and indicates some emergency conditions.