Answer: NMAP, or Network Mapper, is an open-source tool widely recognized for network discovery and security auditing. As emphasized in the MSEL-032 course material on Cyber Attacks, NMAP serves as a foundational utility for ethical hackers and penetration testers, enabling them to map networks, identify live hosts, discover open ports, detect operating systems, and pinpoint running services on target systems. Network scanning is the reconnaissance phase of cybersecurity, crucial for understanding the...

Answer: Decision trees are powerful and interpretable classification algorithms widely used in machine learning, particularly within cyber security for tasks like intrusion detection, malware classification, or phishing URL identification. The C4.5 algorithm, an extension of ID3, is a popular choice due to its ability to handle both categorical and continuous attributes, manage missing values, and employ pruning for improved generalization. MSEL-032, covering Cyber Attacks and Cloud Security, often ut...