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An organizations help desk is flooded with phone calls from users stating they can no longer access certain websites.
The help desk escalates the issue to the security team, as these websites were accessible the previous day.
The security analysts run the following command: ipconfig /flushdns, but the issue persists. Finally, an analyst changes the DNS server for an impacted machine, and the issue goes away.
Which of the following attacks MOST likely occurred on the original DNS server?[...]
a. DNS cache poisoning
b. Domain hijacking
c. Distributed denial-of-service
d. DNS tunneling

Respuesta :

Martebi

The distributed denial-of-service (DDoS) attack is known to be a malicious  attack. Distributed denial-of-service attacks can mostly likely occurred on the original DNS server.

  • Distributed denial-of-service often tires to hinder the normal traffic of the said targeted server, service or network by filling up the target or its environment/ infrastructure with a flood of Internet trash.

The symptom of a DDoS attack is that the site or service will suddenly run slow or become unavailable. Traffic analytics tools can help one to know  the signs of a DDoS attack. DDOS attack can be prevented by  switching DNS servers.

Learn more from

https://brainly.com/question/13977863

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