Distinguish between IP address and MAC address? What is the length of these two addresses?

Two computers (Comp A and Comp B) are interconnected under a LAN. The IP addresses and Subnet masks of Comp A and Comp B are 192.169.115.101 & 255.255.255.0 and 192.169.115.105 & 255.255.0.0. Determine whether these two computers are local hosts (under same LAN segment) or remote hosts (under separate LAN segment).