Select Simulation Mode. Perform a Ping simulation from PC$0$ to PC$1$ using "Add Simple PDU". You will quickly realize the Ping failed. Explain why the Ping between PC$0$ and PC$1$ failed $?$

Hint: Inspect PC$0$ IP address $(192\mathrm{.}168\mathrm{.}100\mathrm{.}1)$ and PC$1$ IP address $(192\mathrm{.}168\mathrm{.}101\mathrm{.}1)$ with subnet mask $255\mathrm{.}255\mathrm{.}255\mathrm{.}0$