CompTIA
SY0-501 · Question #80
A technician must configure a firewall to block external DNS traffic from entering a network. Which of the following ports should they block on the firewall?
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Submitted by jakub_pl· Mar 4, 2026General security concepts
Question
A technician must configure a firewall to block external DNS traffic from entering a network. Which of the following ports should they block on the firewall?
Options
- A53
- B110
- C143
- D443
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Topics
#firewall rules#DNS#port 53#network filtering