CompTIA CySA+ (CS0-001) — Question 152

A company discovers an unauthorized device accessing network resources through one of many network drops in a common area used by visitors.
The company decides that it wants to quickly prevent unauthorized devices from accessing the network but policy prevents the company from making changes on every connecting client.
Which of the following should the company implement?

Answer options

• A. Port security
• B. WPA2
• C. Mandatory Access Control
• D. Network Intrusion Prevention

Correct answer: A

Explanation

Port security is the correct choice as it allows for the restriction of devices that can connect to a specific port on a switch, effectively preventing unauthorized access. WPA2, while providing secure wireless access, does not address unauthorized wired connections. Mandatory Access Control is more about managing permissions on a user level rather than controlling device access on a network. Network Intrusion Prevention systems monitor traffic but do not directly prevent unauthorized devices from connecting to the network.