Which of the Following Scenarios Would Make a DNS Sinkhole

question 235

Multiple Choice

Which of the following scenarios would make a DNS sinkhole effective in thwarting an attack?

• A) An attacker is sniffing traffic to port 53, and the server is managed using unencrypted usernames and passwords.
• B) An organization is experiencing excessive traffic on port 53 and suspects an attacker is trying to DoS the domain name server.
• C) Malware is trying to resolve an unregistered domain name to determine if it is running in an isolated sandbox.
• D) DNS routing tables have been compromised, and an attacker is rerouting traffic to malicious websites.

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Definitions:

Preferred Stock

A class of ownership in a corporation with a fixed dividend that is paid before any dividends are paid to common stockholders, typically without voting rights.

Common Stock

Shares of ownership in a corporation, giving holders voting rights and a share in the company's profits through dividends, subject to business performance.

Claim on Assets

Legal rights or interests that creditors and shareholders have on a company’s assets, usually in the event of the company's liquidation.

Fixed Dividend

A specified amount of money paid regularly by a company to its shareholders out of its profits or reserves.