300-745 Exam Dumps : Designing Cisco Security Infrastructure (300-745 SDSI) v1.0

For an organization seeking a "comprehensive and holistic approach" to risk management, theNIST SP 800-37 (Risk Management Framework - RMF)is the industry-standard recommendation. The RMF provides a structured, seven-step process for managing security and privacy risk: Prepare, Categorize, Select, Implement, Assess, Authorize, and Monitor.

According to the Cisco SDSI objectives, the NIST RMF allows organizations to align their security controls with their business goals and risk tolerance. It moves security beyond a simple "checklist" and into a continuous lifecycle of improvement.HIPAA(Option A) andGDPR(Option D) are regulatory mandates focused on specific data types (Health and Privacy, respectively) rather than a general framework for all organizational risks.MITRE CAPEC(Option B) is a dictionary of attack patterns used for technical threat modeling, not a holistic risk management process. By adopting NIST SP 800-37, a company ensures that its security infrastructure is designed and maintained based on a rigorous assessment of the current threat landscape and organizational requirements, fulfilling the core requirements of the "Risk, Events, and Requirements" domain.

In the event of a confirmed compromise, a SOC analyst must act quickly to prevent lateral movement.Cisco XDR (Extended Detection and Response)is the integrated security platform designed to provide cross-layered detection and automated response actions across the network, endpoint, and cloud. One of the most critical response actions within XDR is the ability toquarantine or isolate an endpoint.

Cisco XDR integrates with endpoint security agents (like Cisco Secure Client) and network infrastructure (like Cisco ISE). From a single interface, an analyst can trigger a "Host Isolation" command. This command instructs the endpoint agent to block all network traffic except for communication with the security console, effectively putting the device in digital quarantine. This is much faster and more effective than manually tracking down the device. Aflow collector(Option A) andsyslog(Option B) are diagnostic tools used for visibility and logging; they cannot take active enforcement actions. Aload balancer(Option C) manages traffic distribution for applications and is irrelevant to endpoint containment. Cisco XDR fulfills the SDSI objective of "Securing Infrastructure through Automation," allowing SOC teams to mitigate threats at scale through coordinated response workflows.

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The requirement to restrict administrative tasks like "customer onboarding" to specific users based on their job function is a classic use case forRole-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 ofleast privilegeby 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 aVPC(Option A) orSecurity 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 differentfunctionsoractionsperformed within the application once the connection is established. AService 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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