200-201 Exam Dumps - Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS)

Encryption is an evasion technique that is a function of ransomware, which is a type of malware that encrypts the victim’s files or system and demands a ransom for the decryption key. Encryption is used by ransomware to prevent the victim from accessing their data and to avoid detection by antivirus or other security tools. Encryption can also be used by other types of malware to hide their communication, configuration, or payload from analysis. References:

• Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) v1.0, Module 3: Network Intrusion Analysis, Lesson 3.4: Malware
• Cisco Certified CyberOps Associate Overview, Exam Topics, 3.4 Compare and contrast types of malware

The lack of data visibility needed to detect the attack is caused by the threat actor gaining access to the system by known credentials. This means that the threat actor either obtained the employee’s username and password through phishing, social engineering, or other means, or used a compromised account that had legitimate access to the system. This would explain why there were no suspicious logs, alerts, or failed login attempts, as the threat actor appeared to be a normal user. References: https://learningnetworkstore.cisco.com/on-demand-e-learning/understanding-cisco- cybersecurity-operations-fundamentals-cbrops-v1-0/CSCU-LP-CBROPS-V1-028093.html (Module 2, Lesson 2.1.2)

To search for additional downloads of a malicious file by other hosts, the file hash value is needed. The hash value provides a unique identifier for each specific file version, enabling cybersecurity professionals to track down identical files across networks. References := Cisco Certified CyberOps Associate Overview

The #netstat -an command output typically displays a list of all open ports and associated connections. If the web application is slowed down, the engineer would look for unusual patterns such as an excessive number of connections to the web server which could indicate a denial-of-service attack. However, without specific details from the #netstat -an output, it’s not possible to determine the exact cause of the issue. Therefore, the engineer would need to gather more data, possibly including checking server logs, resource usage, and network traffic patterns to diagnose the problem accurately.

References: Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) provides knowledge on network monitoring tools and interpreting their output to identify potential security incidents.

 In RBAC, access is based on the roles that users have within an organization, and permissions to perform certain operations are assigned to specific roles. DAC, on the other hand, is a type of access control where the access rights are determined by the owner of the resource or the resource itself.