CompTIA DataX (CNX-001) — Question 11

A network administrator is configuring firewall rules to lock down the network from outside attacks. Which of the following should the administrator configure to create the most strict set of rules?

Answer options

• A. URL filtering
• B. File blocking
• C. Network security group
• D. Allow list

Correct answer: D

Explanation

The correct answer is D, Allow list, because it permits only specified traffic, effectively blocking everything else, thus providing the highest level of security. In contrast, options A, B, and C offer various forms of filtering and blocking, but they do not enforce as strict a policy as an Allow list does.