D-CIS-FN-01 Sample Questions & Answers

This configuration represents N+1 redundancy. Here, 'N' is the number of components required for the system to operate (e.g., 2 servers to handle the load), and '+1' is the extra component added for failover. If one of the three servers fails, the remaining two can still handle the workload. This is a common and cost-effective way to provide high availability. 2N would require full duplication (4 servers if N=2), and N+M allows for multiple failures. Geographic redundancy involves multiple locations.

Dell EMC VxRail is a hyperconverged infrastructure (HCI) appliance that tightly integrates compute, storage, virtualization, and management, making it ideal for the primary goal of a simple, scalable private cloud. Dell EMC VxFlex is a software-defined storage (SDS) solution that provides highly scalable and flexible block storage, which can be deployed on commodity hardware, perfectly matching the secondary project's requirement. PowerEdge MX is modular infrastructure, not a complete HCI solution in the same way VxRail is.

This statement is false. MFA enhances security by requiring two or more verification factors from independent categories: something you know (password), something you have (a security token or phone), and something you are (biometrics). Complex password requirements are a single-factor control, whereas MFA adds additional, separate layers of verification.

A hot DR site is a fully operational duplicate of the primary site, allowing for near-instantaneous failover, which is necessary to meet the 1-hour RTO. Synchronous replication ensures that data is written to both the primary and DR sites simultaneously, achieving a near-zero RPO, which satisfies the 15-minute RPO requirement. Locating the site in Munich keeps all data within Germany, meeting data sovereignty laws. A cold or warm site would not meet the stringent RTO, and asynchronous replication might not meet the 15-minute RPO.

Platform as a Service (PaaS) is the correct model. PaaS provides a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app. The cloud provider manages the OS, hardware, and runtime, while the customer manages their application and data. IaaS would require the company to manage the OS. SaaS would provide a complete application, not a platform for development.

Service orchestration is the automated arrangement, coordination, and management of complex computer systems and services. It is specifically designed to handle workflows that involve multiple components and dependencies, such as deploying a multi-tier application. While service automation is a related concept (automating individual tasks), orchestration is about coordinating a sequence of automated tasks to deliver a complete service.

Shadow IT refers to the use of IT systems, devices, software, applications, and services without explicit approval from the IT department. The scenario where the marketing team uses an unsanctioned cloud service is a classic example of Shadow IT. It creates significant security and compliance risks because the IT department cannot enforce security policies or monitor data on these unauthorized platforms.

A cloud service catalog is the user-facing component of the service portfolio. It acts as a 'storefront' or menu where consumers can see what services are available, understand their specifications (like pricing, SLAs, and features), and submit requests for provisioning. Its main purpose is to enable self-service and provide a clear, consistent view of available IT services.

A WAF is essential for protecting against web-based attacks like SQL injection and cross-site scripting (XSS).

MFA is critical for securing user accounts and preventing unauthorized access, even if passwords are compromised.

An IAM system is fundamental for managing user identities and enforcing the principle of least privilege, ensuring users only have access to the resources they need.

In a microservices architecture, an application is built as a collection of small, independent services. Each service is self-contained, runs in its own process, and communicates with other services through well-defined APIs. This loose coupling allows individual services to be developed, deployed, and scaled independently, which is a major advantage over monolithic designs where the entire application must be redeployed for any change.