Exam CAS-004 topic 1 question 342 discussion

B. Remote access services deployed using vendor-diverse redundancy with event response driven by playbooks. This solution aligns with the client's requirements: Access Redundancy and High Availability: The use of vendor-diverse redundancy ensures that even if one vendor's solution experiences an outage, the other can continue to provide access to critical web services. This helps achieve redundancy and high availability. Resilience to Proprietary Zero-Day Vulnerability: By using diverse vendors, the risk of a zero-day vulnerability affecting both solutions simultaneously is reduced. Additionally, playbooks can be created to respond to events, including the detection of vulnerabilities. This allows for a quick transition to the alternative solution if a vulnerability is detected. Automated Transition and Manual Triggering: Playbooks provide the automation required to trigger transitions in response to defined events. Additionally, they can be manually triggered by security operations staff when necessary.

o Vendor-diverse redundancy: This addresses the requirement for resilience against a single component vulnerability. By using multiple vendors with different technologies, if one vendor experiences a zero-day exploit, the other solution can still provide secure access. o Event response driven by playbooks: This allows for automated transition between secure access solutions based on defined events. This triggers the switch to the backup solution in the case of an attack or other issue, ensuring minimal downtime.

C would be a good choice but it doesn't match all the requirements Automated transition of secure access solutions must be able to be triggered by defined events or manually by security operations staff. Using playbooks for event-driven responses ensures that transitions are automated and consistent. SOAR can use automation but it doesn't address zero-day vulnerabilities. That will need to be done by security professionals

B. Remote access services deployed using vendor-diverse redundancy with event response driven by playbooks. This solution provides the following benefits: Redundancy and high availability: By deploying remote access services using vendor-diverse redundancy, the client company can ensure that access to critical web services will remain available even if one of the vendors experiences an outage. Resilience to zero-day vulnerabilities: By using vendor-diverse redundancy, the client company is less likely to be affected by a proprietary zero-day vulnerability in a single component. Automated transition: By using event response driven by playbooks, the client company can automate the transition to a backup remote access solution in the event of an outage or security incident.

Option C suggests using two separate secure access solutions orchestrated by SOAR (Security Orchestration, Automation, and Response) with components provided by the same vendor for compatibility. While this could provide redundancy, it doesn't explicitly address the requirement for resilience to a zero-day vulnerability in a single component. Additionally, it may not offer the same level of vendor-diverse redundancy as option B. Option B, on the other hand, specifically mentions deploying remote access services with vendor-diverse redundancy and using playbooks for event-driven responses. This option aligns more closely with the provided requirements, making it the better choice.

B. Vendor diversity prevents zero-day vulnerabilities from affecting the entire infrastructure.

Using SOAR allows for automated transition of secure access solutions triggered by defined events or manually by security operations staff. This enhances response and adaptability to changing security situations.