As the IT administrator for a $150-$person medium$-$sized business, you oversee a network architecture that includes numerous VLANs, managed switches, and access points that operate in the $2\mathrm{.}4$ and $5$ GHz bands. Workers have been complaining about sluggish network speeds, frequent disconnections from wired and wireless networks, and sporadic connectivity problems lately. It has been confirmed by you that there are no hardware malfunctions after preliminary testing.

$1.$ In this situation, what methodical troubleshooting procedures considering potential faults at different OSI model layers would you use to identify and fix the network issues? Give a thorough explanation of your methodology, outlining the precise instruments and techniques you would employ at each stage to locate

and address the underlying causes of the network issues.

$2.$ After the preliminary testing it was confirmed that there is no hardware malfunction. However the physical documentation had incorrect device placement on the building, With your knowledge of networking, show a schematic presentation of how the mentioned devices appear on the physical topology?