Certified Ethical Hacker CEH · Free Practice Question Easy
Question 29
As the Information Security Manager of HDA Inc., you are responsible for monitoring and securing the company's network infrastructure. You have identified the need to ensure accurate time synchronization across the network and are considering using Network Time Protocol (NTP) to achieve this. Which of the following UDP ports is typically used by NTP?
- A A. 123
- B B. 443
- C C. 80
- D D. 53
Reveal correct answer
Correct answer: A
Explanation
Correct Answer: A. 123 Explanation: A. Port 123 is the default port used by the Network Time Protocol (NTP) to synchronize the clocks of computers on a network. This port is used to send and receive time synchronization data between NTP servers and clients. B. The default port for HTTPS is port 443. HTTPS is a secure version of HTTP, which uses SSL/TLS encryption to protect the communication between the web server and the client. Port 443 is used to listen for incoming HTTPS requests and to transmit HTTPS responses back to the client. C. The default port for HTTP is port 80. This port is used to listen for incoming HTTP requests and to transmit HTTP responses back to the client. D. Port 53 is used by the Domain Name System (DNS) to translate domain names into IP addresses. This port is used to send and receive DNS query and response messages, but it is not used for NTP traffic.Discussion
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