connecting 2 LAN using one switch

hi guyz…

its me again…i really need your help..our deadline is fast approaching…help me guyz

is that possible to connect 2 LAN using one switch?should i configure the TCP/IP or do i need to add a network client but how?

here is the problem given to us:
“Create a network using 2 topologies(either the same or different topologies)aiming two LAN using only one switch?”thats the problem given to us…help me guys…i need an exact answer….

thanks…