During a routine network maintenance check, you notice an increase in complaints about network slowdown from a department that had no issues the previous week. What is one of the first steps you should take in troubleshooting this issue?
Replace all the network cables in the department
Check if there have been any recent changes to the network configuration, devices, or infrastructure in that department
Advise the department to stop using the internet until the issue is resolved
Increase the bandwidth limit for the affected department