$3)$ Paul administers a network with the addressing scheme:

$192\mathrm{.}168\mathrm{.}0\mathrm{.}0/24$ Default Gateway of $192\mathrm{.}168\mathrm{.}0\mathrm{.}1$

You administer a network with the addressing scheme:

$10\mathrm{.}0\mathrm{.}0\mathrm{.}0/16$ Default Gateway of $10\mathrm{.}0\mathrm{.}0\mathrm{.}1$

a$)$ It was decided to connect the two networks in order to easily share information. On November $12,2024,$ at $8$:$00$am the two networks are successfully inter$-$connected via an Ethernet interface on a CISCO $2600$ router.

On November $18,2024,$ at $11$:$30$am you decide to apply windows updates to your MS SQL Server which has an IP address of $10\mathrm{.}0\mathrm{.}0-105/16$ default gateway $10\mathrm{.}0\mathrm{.}0.1.$ Those updates require an immediate reboot and take $15$ minutes to complete before booting back up$.$

On November $18,2024,$ at $8$:$30$am Paul attempts to ping the local IP address $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$ from the host esmputer $\backslash (1971680100/74\backslash ),$ Panl rocsives the following:

C:yping $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$

Reply from $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$: bytes $\backslash (=32\backslash )$ time $\backslash (=12\backslash$mathrm$\{$~ms$\}\backslash )$ TTL $\backslash (=64\backslash )$

Reply from $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$: bytes $\backslash (=32\backslash )$ time $\backslash (=18\backslash$mathrm$\{$~ms$\}\backslash )$ TTL $\backslash (=64\backslash )$

Reply from $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$: bytes $\backslash (=32\backslash )$ time $\backslash (=7\backslash$mathrm$\{$~ms$\}\backslash )$ TTL$=\backslash (=64\backslash )$

On November $18,2024,$ at $11$:$40$am Paul again attempts to ping the local IP address $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$ from the host computer $\backslash (192\mathrm{.}168\mathrm{.}0\mathrm{.}100/24\backslash ),$ Paul now receives the following:

C:$1$ping $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$

Request Timed out.

Request timed out.

Request timed out.

Paul checks his network but make no changes.

On November $18,2024,$ at $12$:$05$pm Paul attempts to ping $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$ again $-$ Paul now gets the following:

C:Iping $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$

Reply from $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$: bytes $\backslash (=32\backslash )$ time $\backslash (=12\backslash$mathrm$\{$~ms$\}\backslash )$ TTL$=\backslash (=64\backslash )$

Reply from $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$: bytes $\backslash (=32\backslash )$ time $\backslash (=18\backslash$mathrm$\{$~ms$\}\backslash )$ TTL$=64$

Reply from $192\mathrm{.}168\mathrm{.}0\mathrm{.}16$: bytes $\backslash (=32\backslash )$ time $\backslash (=7\backslash$mathrm$\{$~ms$\}\backslash )$ TTL $\backslash (=64\backslash )$

Assuming no changes were made to any equipment on the network and using only the information given.

Explain in detail what is occurring and why Paul now gets a reply. Who is the administrator of the CISCO $2600$ router? $($You or Paul$)$ How do you know? $(4$ points$)$

b$)$ On November $21,2024,1$:$00$pm$,$ Paul has no problem connecting to devices on your network $($everything appears to be working perfectly$).$ However, when Paul tries to ping those same devices on your network he gets "Request timed out". $(4$ points$)$

i$.$ Explain what is going on$.$

ii$.$ Give your best estimate as to when the last configuration changes were made to the CISCO $2600$ router. Explain your answer.