"CMD, cmd or cmd.exe, also known as Command Prompt, is the command-line interpreter in the OS/2, eComStation, Windows NT, Windows CE, and ReactOS operating systems.
It is the counterpart of COMMAND.COM in DOS and Windows 9x systems, and analogous to the Unix shells used on Unix-like systems." - Wikipedia
Chapter 1 started with Ping, TraceRt and NSLookUp. Chapter 2 continued with IPConfig, NetStat and ARP. Chapter 3 continued with PowerCFG / ShutDown / SystemInfo.
Let's look at our third retrospective.
We have covered so far...
CH 1: CMD - Ping / TraceRt / NSLookUp
CH 2: CMD - IPConfig / NetStat / ARP
CH 3: CMD - PowerCFG / ShutDown / SystemInfo
CH 4: CMD - Retrospective III