Ethical Hacking Essentials Practice Test

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Prepare for your Ethical Hacking Essentials Test. Study with flashcards and multiple choice questions with detailed hints and explanations. Enhance your cybersecurity skills and get ready for your exam!

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Which tool is known as an asynchronous TCP and UDP port scanner?

Unicornscan
Netcat
Angry IP Scanner
Nessus

The correct answer is: Unicornscan

Unicornscan is recognized as an asynchronous TCP and UDP port scanner due to its ability to perform port scanning without having to establish a full connection for each probe. This functionality allows it to send multiple port probe packets at once, significantly enhancing the speed and efficiency of the scanning process compared to traditional scanners that might use a synchronous approach. Asynchronous scanning is advantageous because it can handle a large number of connections simultaneously, making it effective for scanning large networks. This method also helps in evading some security measures that could detect and block traditional, synchronous scanning methods. The other tools mentioned, while useful in network scanning and security testing, do not operate in an asynchronous fashion or may not support both TCP and UDP scanning as effectively as Unicornscan. For instance, Netcat is primarily known for its versatility in creating network connections and can function as a simple scanner, but it does not specifically focus on asynchronous operations. Angry IP Scanner is user-friendly and effective for quick scanning but lacks the advanced asynchronous capabilities. Nessus is a comprehensive vulnerability scanner that focuses on assessing security vulnerabilities rather than specifically performing asynchronous port scans.