How is generative AI used in securing networks?
Answer(s): D
The integration of Artificial Intelligence (AI) and Generative AI (GenAI) into network security is a pivotal component of the Cisco SDSI v1.0 blueprint. While traditional security mechanisms rely on deterministic rules and static signatures, GenAI leverages large-scale telemetry data to understand the baseline behavior of a specific network environment. By processing vast amounts of flow logs, packet metadata, and user activity, AI models can detect unusual patterns—often referred to as anomalies—that signify sophisticated threats such as zero-day exploits, lateral movement, or slow-and-low data exfiltration.In a modern security architecture, GenAI enhances the "Visibility and Monitoring" domain by identifying deviations that would be invisible to human analysts. For instance, if an application suddenly changes its communication frequency or connects to a previously unknown internal segment, the AI can flag this as a potential compromise. Unlike Option A or B, which focus on operational efficiency and performance, or Option C, which is a reporting and compliance function, the use of AI for behavioral analytics directly strengthens the threat detection lifecycle. Cisco products like Secure Network Analytics (Stealthwatch) and Cognitive Intelligence use these AI capabilities to transition from reactive defense to a proactive posture, reducing the window of opportunity for attackers and aligning with the Cisco SAFE principle of continuous monitoring and pervasive visibility.
Employees in a healthcare organization could not access their devices when they returned to work after the weekend. The security team discovered that a threat actor had encrypted the devices. Which security solution would mitigate the risk in future?
In the scenario described, the healthcare organization fell victim to a ransomware attack, where devices were encrypted to extort the organization. To mitigate such risks in the future, Endpoint Detection and Response (EDR) is the essential architectural component. According to the Cisco SDSI Secure Infrastructure domain, protecting endpoints requires more than just traditional antivirus; it necessitates a solution that provides deep visibility into file behavior and process execution.A robust EDR solution, such as Cisco Secure Endpoint, continuously monitors all activity on the device. When ransomware attempts to initiate its encryption process, the EDR can detect the malicious behavioral pattern in real-time. It can then take automated actions, such as isolating the infected host from the network and "stopping" the encryption process before it spreads. Furthermore, Cisco's EDR provides retrospective security, allowing administrators to see how the malware arrived and which other devices it touched. While Option A (Password Policies) helps prevent credential theft and Option C (DLP) prevents data theft, they do not stop the technical process of disk encryption. Only EDR provides the necessary detection and automated response capabilities to handle modern file-less and polymorphic malware threats effectively. This aligns with the Cisco SAFE goal of securing the endpoint layer against advanced persistent threats (APTs) and ransomware variants.
A manufacturing company recently experienced a network-down scenario due to malware spread on the management network. The company wants to implement a solution to detect and mitigate a similar threat in the future and protect the overall network. Which solution meets the requirements?
Answer(s): A
The spread of malware across a sensitive segment like the management network highlights a failure in host-level security and internal visibility. To detect and mitigate the spread of such threats and protect the overall network, Endpoint Detection and Response (EDR) is the most effective choice among the options. In the Cisco security ecosystem, the endpoint is often the last line of defense and the most critical source of telemetry for malware incidents.By deploying an EDR solution like Cisco Secure Endpoint, the manufacturing company gains the ability to identify the "patient zero" of the infection. EDR uses advanced features like Device Traversal and Lateral Movement detection to see how malware moves from one machine to another over the management network. Once detected, the security team can use the EDR platform to initiate a "host isolation" command, effectively cutting off the infected device's communication with the rest of the network without physically unplugging it. While Encrypted Threat Analytics (ETA) (Option C) is a powerful network-based feature for detecting malware in encrypted traffic without decryption, EDR provides the most granular control and response capabilities specifically for malware residing on and spreading between hosts. RADIUS (Option B) and IPsec VPNs (Option D) focus on access control and encryption of data in transit, respectively, but do not provide the behavioral analysis needed to stop a running malware outbreak once the network has already been accessed.
Which tool is used to collect, analyze, and visualize logs from network devices, endpoints, and other sources in an enterprise?
In the architectural design of a modern Security Operations Center (SOC), visibility is paramount. Splunk is a leading Security Information and Event Management (SIEM) and log management platform used to aggregate data from disparate sources across the enterprise. According to the Cisco SDSI v1.0 objectives, specifically within the "Risk, Events, and Requirements" domain, a central repository for telemetry is essential for incident response and threat hunting.Splunk collects logs, metrics, and other data from network devices (firewalls, switches, routers), endpoints (laptops, servers), and cloud applications. It then indexes this data, allowing security analysts to perform complex searches, create visualizations, and build dashboards that provide a real-time view of the organization's security posture.While Cisco offers native tools like Cisco Secure Cloud Analytics or Cloud Observability (Option B) for specific cloud and application performance monitoring, Splunk serves as the broader "single pane of glass" for the entire infrastructure. Cisco Email Security Appliance (Option A) and Cisco Web Security Appliance (Option C) are specialized security engines that generate logs but do not function as the overarching collection and analysis platform for the entire enterprise. By integrating Cisco security products with Splunk, organizations can correlate events—such as a blocked web request from a WSA and a malware alert from a Secure Endpoint—to identify a coordinated attack, fulfilling the Cisco SAFE requirement for pervasive visibility.
An IT company operates an application in a SaaS model. The administrative tasks, such as customer onboarding, within the application must be restricted to users who are on the corporate network where admins can access those functions via a web browser or a smartphone application. Which application technology must be used to provide granular control based on function?
Answer(s): B
The requirement to restrict administrative tasks like "customer onboarding" to specific users based on their job function is a classic use case for Role-Based Access Control (RBAC). In the context of application security design, RBAC is the mechanism that maps a user's identity to a specific set of permissions within the application.According to Cisco Security Infrastructure principles, RBAC ensures the principle of least privilege by ensuring that an "Admin" role has access to onboarding functions, while a "Support" or "Standard User" role does not. This control is independent of the network layer and is enforced at the application or identity provider level. While a VPC (Option A) or Security Groups (Option C) provide network-layer isolation and can ensure the user is on the corporate network (by filtering IP ranges), they cannot distinguish between different functions or actions performed within the application once the connection is established. A Service Mesh (Option D) is used for microservices communication and can provide some authorization, but RBAC is the primary architectural approach for defining "who can do what" within an application interface. Implementing RBAC allows the SaaS provider to secure sensitive administrative workflows, ensuring that only authorized personnel can modify customer data or system configurations.
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