This is a clear mind map that primarily explains signal representation, V-I relationship, and open circuit. Each content is further explained on several levels, including their definitions, importance, and applications. For example, signal representation refers to ways of representing information with symbols or values; V-I relationship refers to the relationship between voltage and current across a resistor; open circuit refers to a state where a break in the circuit causes current not to flow.

This is a clear mind map that primarily explains addressing, fragmentation, and Address Resolution Protocol (ARP). It elaborately explains the importance and methods of address allocation in computer networks; the process of defragmentation and its impact on performance enhancement; and the working principle of ARP and its role in network communication. Furthermore, it explores the significance of these concepts for understanding network operations and maintaining an efficient network environment.