Free Practice Questions for IBM C1000-172 Exam

Having multiple sites within the same region in IBM Cloud providesbetter 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.

References 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 encryptionis unrelated to multiple sites.

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

C. Enhanced scalability and performanceis more relevant to resource allocation and management.

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Local resiliency in IBM Cloud refers to using a separate zone within the same region that has its own independent power supply, cooling, and networking. This approach provides redundancy within a single geographical region, ensuring that if one zone fails due to a localized event, other zones can continue to operate without interruption.

Local Resiliency Definition:By deploying resources in separate zones within the same region, clients achieve local resiliency that protects against localized failures such as power outages or hardware failures affecting only one zone.

Why This is Considered Local Resiliency:It offers redundancy and fault tolerance without requiring resources to be spread across multiple regions, reducing latency and providing a balance between availability and performance.

Comparison with Other Options:

A (Physical events):Describes regional or global resiliency.

B (Multiple copies of data across sites):Refers to data redundancy, which is different from local resiliency.

C (Testing site strategy):Focuses on testing rather than a strategy for resiliency.

References:

IBM Cloud Resiliency Solutions

IBM Cloud Architect Exam Study Guide

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IBM Power System Virtual Servers offer centralized IT infrastructure management, which is beneficial for a global manufacturing company looking to consolidate its IT footprint. By moving workloads to IBM Power System Virtual Servers, the company can manage its global IT resources from a single platform, simplifying operations, reducing costs, and increasing operational efficiency.

Benefits of Centralized Management:Consolidating IT infrastructure under a single, centrally managed platform allows for more streamlined operations, consistent management practices, and a reduction in the complexity associated with managing multiple dispersed systems.

Why This Benefit Meets the Use Case:The company needs to consolidate its IT footprint, which requires reducing the number of disparate systems and consolidating management under a single pane of glass.

Comparison with Other Options:

A (Disaster Recovery):Relevant but not the primary benefit in this use case.

C (Development and Testing):Does not align with the need to consolidate IT infrastructure.

D (High-Performance Computing):Not the primary goal described in the use case.

References:

IBM Power Systems Virtual Servers Documentation

IBM Cloud Architect Exam Study Guide

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IBM Cloud Transit Gatewayprovides the ability toprovision and define connections between resources on the IBM Cloud network.

IBM Cloud Transit Gateway: This service allows you to connect multiple Virtual Private Clouds (VPCs) and on-premises networks to a central gateway. It simplifies network management by providing a single entry point for interconnecting multiple resources across the IBM Cloud.

Connectivity Between Resources: By creating connections through the Transit Gateway, an organization can establish a scalable and flexible network architecture that integrates various cloud resources.

References from IBM Cloud Professional Architect Materials:

According to IBM documentation on IBM Cloud Transit Gateway, it provides centralized management and provisioning of connections across different IBM Cloud environments.

Other options are incorrect:

A. Client designates which traffic remains within the private IBM Cloud backboneis not specifically managed by the Transit Gateway.

B. Provides private interconnectivity for on-premises workloads and the designated VPCis more related to Direct Link.

D. Provides a decentralized hub for better regional connectivity and load balancingis incorrect since Transit Gateway is a centralized solution.

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For general-purpose applications in IBM Cloud, the recommendedIOPS tierwhen provisioning10 TB of Block Storage for Virtual Private Cloud (VPC)is3 IOPS/GB. This IOPS tier provides a balanced level of performance suitable for a wide range of general-purpose workloads, ensuring that the application can handle typical storage and performance requirements without unnecessary over-provisioning or cost.

The 3 IOPS/GB tier is designed to provide a reasonable level of input/output operations per second (IOPS) for general-purpose applications, such as web hosting, database hosting, or development workloads that do not require high-performance storage.

For more performance-critical or latency-sensitive applications, you might choose a higher IOPS tier (such as 5 or 10 IOPS/GB), but for general-purpose workloads, 3 IOPS/GB offers an optimal balance between cost and performance.

IBM Cloud Documentation References:

IBM Cloud Block Storage for VPC: Performance and IOPS Options

IBM Cloud Block Storage Provisioning Guide

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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.

References:

IBM Cloud Transit Gateway Documentation

IBM Cloud Networking Solutions

IBM Cloud Architect Exam Study Guide

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When deploying an application to an IBM Cloud OpenShift cluster that requires persistent storage across zones within a region, Portworx and Block Storage are viable options.

Portworx:This is a cloud-native storage solution designed for containerized environments like Kubernetes and OpenShift. Portworx provides highly available, scalable, and persistent storage that spans multiple zones within a region, ensuring data redundancy and availability.

Block Storage:IBM Cloud Block Storage provides persistent, high-performance storage that can be attached to virtual servers or containers. It is designed to offer cross-zone availability when configured with the necessary replication and redundancy settings.

Comparison with Other Options:

A (Kubernetes local volume storage):Not suitable for spanning multiple zones as it is tied to specific nodes.

B (Object Storage):Designed for storing large amounts of unstructured data; it is not typically used for persistent storage in Kubernetes.

D (NetApp on Tap):Primarily used for network-attached storage and might not be optimized for persistent storage across multiple zones in OpenShift.

References:

IBM Cloud Block Storage Documentation

Portworx on IBM Cloud

IBM Cloud Architect Exam Study Guide

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IBM Cloud Hyper Protect Crypto Services is built onFIPS 140-2 Level 3-certified hardware.

FIPS 140-2 Level 3 Certification: This level of certification ensures that the hardware used by IBM Cloud Hyper Protect Crypto Services provides a high degree of security, including physical tamper-resistance and the use of strong encryption protocols.

IBM Hyper Protect Crypto Services: These services leverage Hardware Security Modules (HSMs) that meet the FIPS 140-2 Level 3 certification. The HSMs provide a secure environment for key management and cryptographic operations, which is critical for meeting stringent regulatory and compliance requirements.

References from IBM Cloud Professional Architect Materials:

Detailed information on IBM Cloud Hyper Protect Crypto Services and its use of FIPS 140-2 Level 3-certified hardware can be found in IBM documentation on IBM Cloud Hyper Protect Crypto Services.

Other options are incorrect:

B. NIST 140-2 Level 5-certified hardwareandD. NIST 140-2 Level 2-certified hardwareare not valid terms.

C. FIPS 140-2 Level 4-certified hardwarewould be a higher certification level than is currently used.

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An IBM Cloud Multizone Region (MZR) offers a deployment architecture that spans multiple, physically separated availability zones within the same region. This configuration provides protection against a single zone failure, as applications and services can continue to operate if one zone experiences an outage.

Why MZR Provides Protection Against Single Zone Failure:Deploying applications in an MZR ensures that resources are distributed across multiple zones, each with its own independent infrastructure (power, cooling, networking). If a failure occurs in one zone, the other zones remain unaffected, thus maintaining the availability of the application.

Comparison with Other Options:

A (Reduced resiliency and availability):Incorrect; MZR increases resiliency and availability.

B (Decreased availability compared to a single zone):Incorrect; MZR offers greater availability than a single zone.

D (Lower interconnectivity speed):Incorrect; MZR is designed to provide high-speed interconnectivity between zones.

References:

IBM Cloud Multizone Regions Overview

IBM Cloud Architect Exam Study Guide

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