Cisco Cyber Security Practice Exam

What is a recommended countermeasure for unauthorized LAN access?

1. Regularly changing passwords

2. Secure wiring closets and data centers

3. Using public IPs

4. Allowing guest access

The correct answer is: Secure wiring closets and data centers

Securing wiring closets and data centers is a vital countermeasure for preventing unauthorized LAN access because these locations often serve as the central points for network infrastructure and equipment. Unauthorized individuals gaining physical access to wiring closets or data centers can directly connect to network devices, potentially allowing them to intercept, manipulate, or compromise network communications. By implementing strong physical security measures such as locked doors, surveillance cameras, and access control systems in these areas, organizations can significantly reduce the risk of unauthorized access. Regularly changing passwords, while a good practice for protecting user accounts and systems, does not address physical security concerns related to unauthorized access to the LAN. Using public IP addresses can expose the network to greater risk by making devices accessible from the internet. Allowing guest access can also introduce vulnerabilities, as it may provide unauthorized users with a pathway into the internal network. Therefore, securing wiring closets and data centers is a direct and effective strategy to protect the local area network from unauthorized access.