Josh, a networking intern, is connecting two computers in a LAN. System A has IP address 192.168.4.7/24, and system B has IP address 192.168.5.8/24. He tests the connections using ping but gets the error message host unreachable. They are both properly plugged in to the switch. What is MOST LIKELY the problem?

Domain 4: Communication and Network Security Practice Questions
Questions from the following topics are included in this domain:   
Assess secure network design principles.   
Implement secure network design principles.  
Secure network components using network access control devices.   
Implement secure design communication channels.  
Understand data communications and virtualized networks.