Broadcom 250-580 問題集 練習問題・模擬試験｜日本語版＆英語版対応

Explanation: The function of "Quarantine" in Endpoint Detection and Response (EDR) minimizes the risk of an infected endpoint spreading malware or malicious activities to other systems within the network environment. This is accomplished by isolating or restricting access of the infected endpoint to contain any threat within that specific machine. Here’s how Quarantine functions as a protective measure: Detection and Isolation: When EDR detects potential malicious behavior or files on an endpoint, it can automatically place the infected file or process in a "quarantine" area. This means the threat is separated from the rest of the system, restricting its ability to execute or interact with other resources. Minimizing Spread: By isolating compromised files or applications, Quarantine ensures that malware or suspicious activities do not propagate to other endpoints, reducing the risk of a widespread infection. Administrative Review: After an item is quarantined, administrators can review it to determine if it should be deleted or restored based on a false positive evaluation. This controlled environment allows for further analysis without risking network security. Endpoint-Specific Control: Quarantine is designed to act at the endpoint level, applying restrictions that affect only the infected system without disrupting other network resources. Using Quarantine as an EDR response mechanism aligns with best practices outlined in endpoint security documentation, such as Symantec Endpoint Protection, which emphasizes containment as a critical first response to threats. This approach supports the proactive defense strategy of limiting lateral movement of malware across a network, thus preserving the security and stability of the entire system

Explanation: An incident that may have an impact on business is typically classified with a High priority in cybersecurity frameworks and incident response protocols. Here’s a detailed rationale for this classification: Potential Business Disruption: An incident that affects or threatens to affect business operations, even if indirectly, is assigned a high priority to ensure swift response. This classification prioritizes incidents that may not be immediately critical but could escalate if not addressed promptly. Risk of Escalation: High-priority incidents are situations that, while not catastrophic, have the potential to impact critical systems or compromise sensitive data, thus needing attention before they lead to severe business repercussions. Rapid Response Requirement: Incidents labeled as high priority are flagged for immediate investigation and containment measures to prevent further business impact or operational downtime. In this context, while Critical incidents involve urgent threats with immediate, severe effects (such as active data breaches), a High priority applies to incidents with significant risk or potential for business impact. This prioritization is essential for effective incident management, enabling resources to focus on potential risks to business continuity.

Explanation: To enhance security and prevent further attempts from the intruder after the Intrusion Prevention System (IPS) has detected and blocked an attack, the administrator should enable the setting to Automatically block an attacker's IP address. Here’s why this setting is critical: Immediate Action Against Threats: By automatically blocking the IP address of the detected attacker, the firewall can prevent any further communication attempts from that address. This helps to mitigate the risk of subsequent attacks or reconnections. Proactive Defense Mechanism: Enabling this feature serves as a proactive defense strategy, minimizing the chances of successful future intrusions by making it harder for the attacker to re-establish a connection to the network. Reduction of Administrative Overhead: Automating this response allows the security team to focus on investigating and remediating the incident rather than manually tracking and blocking malicious IP addresses, thus optimizing incident response workflows. Layered Security Approach: This setting complements other security measures, such as intrusion detection and port scan detection, creating a layered security approach that enhances overall network security. Enabling automatic blocking of an attacker’s IP address directly addresses the immediate risk posed by the detected intrusion and reinforces the organization’s defense posture against future threats.