CompTIA Network+ (N10-006) — Question 8

A contractor was hired to troubleshoot congestion issues on the network. After a few of the switches have been reconfigured/upgraded by the contractor, congestion worsens and collisions increase.
Which of the following is the BEST action to alleviate the situation?

Answer options

• A. Allow the contractor to reset switches to factory defaults
• B. Check the cabling on all switches for improper crossover use
• C. Document the changes that were made
• D. Downgrade firmware and restore backup configuration

Correct answer: D

Explanation

The best action to relieve the congestion issue is to downgrade the firmware and restore the backup configuration since it will revert any changes that may have caused the problems. Allowing the contractor to reset switches to factory defaults (A) may not address the specific issues caused by recent changes. Checking cabling (B) is a good preventive measure but may not directly solve the current problem, and documenting changes (C) is important but does not provide a solution to the congestion.