Download Cisco Packet Tracer from the course $($use a Windows $7$ VM if you cannot make it run on Windows $10),$ load the file example$1.$pkt and reply to the questions below:NOTE: The IP addresses for the PCs are $192\mathrm{.}168\mathrm{.}100.$X$,$ where X is the PC #$,$ so$,$ for instance, the IP address of PC$12$ would be $192\mathrm{.}168\mathrm{.}100\mathrm{.}12.$ All PCs have a network mask $255\mathrm{.}255\mathrm{.}255\mathrm{.}128,$ i$.$e$.,$ their IP address is $192\mathrm{.}168\mathrm{.}100.$X$/25$ in CIDR notation$\mathrm{.}1.$ Click on PC$10,$ then on the Desktop tab and finally on Command Prompt. Why PC$10$ cannot ping PC$129?2.$ What would you need for PC$129$ to be able to communicate with the rest of PCs$?$ Describe the most suitable solution, but you do not need to implement it$.3.$ Open a Command Prompt on PC$13$ and execute the command arp $-$a$.$ What PCs o IP address are on the ARP cache? $4.$ Send a ping to $192\mathrm{.}168\mathrm{.}100\mathrm{.}127($wait for a while until command finishes$)$ and try again the command arp $-$a$.$ What IP addresses are now on the ARP cache? $5.$ What the IP $192\mathrm{.}168\mathrm{.}100\mathrm{.}127$ represents? $6.$ What would be the equivalent of this IP address for PC$129?7.$ Remove PC$13.$ Then, add a new PC$,$ attach it to the Switch$1$ and make it able to ping PC$129.$ What IP address did you assign to this new PC$?8.$ And what network mask? $9.$ Remove the connection of this new PC and PC$129$ with Switch$1,$ so they are isolated. Then, connect them using an automatic connection $($the corresponding icon is yellow and red$).$ What type of connection was created? $10.$ Can they ping each other? Why? Access the simulation mode by clicking on the corresponding icon at the bottom right. You can play it step by step, all at once or reset the simulation at any time. There is a simulation already saved to ping from PC$10$ to PC$12.$ Run it going forward at every step and respond to the questions below:$11.$ Why at the second step of the ICMP series the hub sends the ICMP packet to the switch and to PC$11?12.$ Why at the sixth step $($the last one$)$ the hub sends the ICMP response to both PC$10$ and PC$11?$