IBM C1000-172 IBM Cloud Professional Architect v6 Exam Practice Test

Answer : C

The first step in troubleshooting an IBM Cloud access issue is to ensure that the user has the appropriate permissions to access the service or service instance through Identity and Access Management (IAM). IBM Cloud uses IAM to manage user access to resources and services, and improper or insufficient permissions are a common cause of access issues.

Checking IAM Permissions: Users must be granted the correct roles and access policies within IAM to interact with specific IBM Cloud resources. This involves verifying that the user has the necessary level of access (such as Viewer, Editor, or Administrator roles) for the service or resource in question.

Why IAM Access Matters: Without proper IAM access, users will be unable to view, modify, or delete resources, and access issues may manifest as permission errors, inability to see resources, or inability to interact with the service.

Comparison with Other Options:

A (Verify the ACLs): While ACLs are important, IAM access is the primary consideration in IBM Cloud.

B (Operator role): The Operator role may not necessarily grant sufficient access for all use cases.

D (Open a support case): This should be a subsequent step if IAM permissions are correctly configured.

IBM Cloud Identity and Access Management (IAM) Documentation

IBM Cloud Architect Exam Study Guide

Answer : D

Having multiple sites within the same region in IBM Cloud provides better protection against natural disasters.

Multiple Sites for Resiliency: In cloud architecture, resiliency is enhanced by distributing workloads and data across multiple sites or availability zones within the same region. If a natural disaster affects one site, the other sites can continue operations without significant downtime or data loss.

IBM Cloud Regions and Availability Zones: IBM Cloud has multiple availability zones within the same region, providing redundancy and failover options to protect against regional disruptions, such as natural disasters.

Reference from IBM Cloud Professional Architect Materials:

IBM documentation on IBM Cloud Regions and Availability Zones mentions the design for high availability and disaster recovery by using multiple sites or availability zones within a region.

Other options are incorrect:

A . Higher level of data encryption is unrelated to multiple sites.

B . Improved network connectivity between sites is a benefit, but not the primary advantage for resiliency against natural disasters.

C . Enhanced scalability and performance is more relevant to resource allocation and management.

Answer : A

Bare Metal Servers on IBM Cloud provide the required physical isolation, regulatory benefits, and control over the software stack, making them ideal for moving Windows applications quickly without changing the architecture. Bare Metal Servers offer dedicated hardware resources, full control over the server environment, and the ability to configure and manage the software stack, meeting the company's needs for physical isolation and performance.

Why Bare Metal Servers? They provide the highest level of performance, security, and customization, including control over the operating system and applications, which is essential for regulatory compliance and quality of service.

Physical Isolation: Bare Metal Servers are single-tenant servers, meaning they are not shared with other customers, providing physical isolation required for specific regulatory needs.

Comparison with Other Options:

z16 (B) and Power (C) are specialized platforms for different workloads, not necessarily suited for general-purpose Windows applications.

Virtual Servers (D): Provide virtualization but do not offer the same level of control and physical isolation as Bare Metal Servers.

IBM Cloud Bare Metal Servers

IBM Cloud Architect Exam Study Guide

Answer : C

In IBM Cloud, a monitoring agent properly authenticates with the IBM Cloud Monitoring service by using a service instance authorization. This approach allows secure interaction between the monitoring agent and the monitoring service by using identity and access management (IAM) policies and authorizations associated with a service instance.

Service instance authorizations grant specific permissions to services, enabling them to authenticate and interact with other services or resources securely. For IBM Cloud Monitoring, the agent uses the service instance authorization to send metrics to the monitoring service, ensuring that the communication is authenticated and authorized without relying on hard-coded credentials or API keys tied to individual users.

The service instance authorization method is recommended because it is aligned with best practices for securing services in cloud environments, offering a centralized and controlled way to manage permissions.

IBM Cloud Documentation Reference:

IBM Cloud Monitoring: Setting up and Configuring Agents

Service Authorization for IBM Cloud Services

Answer : A

Red Hat OpenShift on IBM Cloud provides a common platform to meet the requirements of a modern hybrid cloud. It is a Kubernetes-based container platform that enables developers to build, deploy, and manage applications across on-premises environments, IBM Cloud, and other public clouds. This flexibility is key for modern hybrid cloud environments, where businesses seek consistency, scalability, and security across diverse infrastructure setups.

Why Red Hat OpenShift? It offers a comprehensive solution for managing containers and microservices, automating CI/CD pipelines, and integrating with IBM Cloud Paks, thus facilitating a true hybrid cloud model.

Benefits of OpenShift: Red Hat OpenShift ensures workload portability, consistency in development and operations, and provides enhanced security features, making it the preferred platform for enterprises embracing a hybrid cloud strategy.

Comparison with Other Options:

Cloud Functions (B): Focused on serverless functions rather than providing a full hybrid cloud platform.

Code Engine (C): Focused on running containerized workloads without managing infrastructure but not as comprehensive as OpenShift.

Virtual Server Instance (D): Provides virtual machines but lacks the comprehensive hybrid cloud management features.

Red Hat OpenShift on IBM Cloud

IBM Cloud Architect Exam Study Guide

IBM Cloud Paks

Answer : C

IBM Cloud Transit Gateway provides network connectivity between different IBM Cloud Virtual Private Clouds (VPCs). It allows for secure, scalable, and efficient communication between resources deployed in separate VPCs, whether they are within the same region or across different regions.

How Transit Gateway Works: It acts as a central hub that facilitates the routing of traffic between multiple VPCs without the need to configure individual VPC peering connections. This simplifies network management, improves scalability, and enhances security by maintaining a single point of control.

Benefits of Transit Gateway: This service supports both private and public connectivity options and allows for routing policies that can be customized according to business needs. It also provides seamless integration with other IBM Cloud services and third-party networks.

Comparison of Other Options:

Domain Name System (A): Not used for network connectivity between VPCs.

Direct Link (B): Used for dedicated, high-speed connections from on-premises to IBM Cloud but not between VPCs.

Power Edge Router (D): Not an IBM Cloud service for inter-VPC connectivity.

IBM Cloud Transit Gateway Documentation

IBM Cloud Networking Solutions

IBM Cloud Architect Exam Study Guide

Answer : D

To achieve a high availability strategy with a target of four nines (99.99%) for an IBM Kubernetes Services cluster, you need to deploy multiple worker nodes across at least three availability zones within a single region. This configuration ensures that even if one or two zones experience failures, the cluster remains operational, thus meeting the 99.99% uptime objective.

High Availability in IBM Cloud Kubernetes Service: Deploying worker nodes across multiple availability zones provides redundancy and fault tolerance. By having at least three zones, the Kubernetes cluster can tolerate failures in up to two zones while still maintaining functionality.

Comparison of Options:

A (Single worker node in a single zone): Insufficient for high availability as any zone failure would result in downtime.

B (Multiple nodes in a single zone): Provides redundancy but still vulnerable to zone-wide outages, not meeting 99.99% uptime.

C (Multiple nodes in at least three zones across multiple regions): While this offers high availability, it exceeds the requirements stated for achieving 99.99% within a single region.

IBM Kubernetes Service Documentation

IBM Cloud High Availability Best Practices

IBM Cloud Architect Exam Study Guide