CompTIA Network+ (N10-009) — Question 210

A network administrator recently updated configurations on a Layer 3 switch. Following the updates, users report being unable to reach a specific file server. Which of the following is the most likely cause?

Answer options

• A. Incorrect ACLs
• B. Switching loop
• C. Duplicate IP addresses
• D. Wrong default route

Correct answer: A

Explanation

The most likely cause of users being unable to access the file server is Incorrect ACLs, as access control lists can block traffic to specific resources. A switching loop would typically cause network-wide issues, and duplicate IP addresses would affect connectivity broadly, while a wrong default route might impact routing but not specifically prevent access to just one server.