Download Cisco Packet Tracker from the list of tools and install it either in your computer or in a Windows virtual machine. Then, familiarize yourself with available devices grouped in categories at the bottom. You can drag & drop and, then, click on the device to access the configuration and the command$-$line interface $($CLI$)\mathrm{.}1.$ How many Gigabit interfaces has a Cisco Catalyst $2950$T$?$ What is the name if the first Fast Ethernet interface?$2.$ Without changing its configuration, enter the CLI. What the prompt looks like? You cannot you make changes from this mode, which is user exec mode. What command do you need to change to the privileged exec mode?$3.$ Click on the Config tab, then on any random interface and change it to half duplex. On the bottom, you will see the equivalent IOS commands that will guide you through the basic configuration of a device. However, the graphical interface is very limited$.$ Capture a screenshot of the equivalent IOS commands$\mathrm{.}4.$ What is wrong in the command below if we wanted to change the configuration of the first interface?$5.$ Making sure you are in privilege mode but not in any specific interface $($the prompt must look like Switch#$),$ execute the command show interfaces. You can view the next screen by pressing ENTER or quit by pressing q$.$ What command would show only the first interface? Is the interface name case sensitive$?$ Explore the use of spaces before $0/0\mathrm{.}6.$ What command would be equivalent to show interfaces but shorter?$7.$ Still with the prompt Switch#$,$ execute config t and try b$?.$ What two commands begin with this letter?$8.$ Use the first to change the message of the day $($motd$)$ to Catalyst $2950$ at Herzing Lab. The way this command work is by using a delimiting character as the last parameter, then you write the message and use this caracter to finish your input. Anyway, you can add a $?$ after the command for help. Capture a screenshot$\mathrm{.}9.$ Change the hostname to mainsw using the CLI. What command did you use? Capture a screenshot of the Global Settings in the Config tab$\mathrm{.}10.$ From the prompt mainsw$($config$)$# execute exit to go back. What command would show the history of typed commands? What would be the most abbreviated from of this command?$11.$ Further reducing the abbreviation to a single letter returns an error Ambiguous command. Add the $?$ character to know why and write down the different possible commands you were given$\mathrm{.}12.$ From now on$,$ use a Cisco $2811$ router. Enter the CLI and change its name to gateway. Then, execute sh ip int brief. What interfaces are shown? What is the administrative state of each one?$13.$ Bring up the FastEthernet$0/0$ interface. What command did you use?$14.$ Now change its IP address to $192\mathrm{.}168\mathrm{.}10\mathrm{.}1/24$ and the description to Internal. Capture a screenshot with the sequence of commands and the new information given by sh ip int brief$\mathrm{.}15.$ Go to configure the FastEthernet$0/1$ interface by DHCP and bring it up$.$ What commands did you use?$16.$ Set the enable secret to N$3$v$3$rL@nd and the enable password to N$3$v$3$rM$!$nd$.$ Then, execute exit to go back and sh running$-$config. What is the difference between both passwords?$17.$ Drag & drop a desktop computer and set the IP address $192\mathrm{.}168\mathrm{.}10\mathrm{.}5$ for its only NIC, as shown in the image below. Then, allow them to communicate by using a cross$-$over copper cable. Capture a screenshot of both devices connected by this cable$\mathrm{.}18.$ Try to ping the PC from the router. You can do it from the user exec mode. Capture a screenshot with the result$\mathrm{.}19.$PC network settings $($question $17)$What happens if using a straight$-$through cable instead of a cross$-$over one? Describe what you see and the result of ping.