Free IBM C1000-172 Practice Exam with Questions & Answers

A security feature of IBM Cloud VPN for virtual private cloud (VPC) service isPerfect Forward Secrecy (PFS).

Perfect Forward Secrecy (PFS): PFS ensures that the compromise of one session key does not compromise the confidentiality of past sessions. It provides additional security for encrypted communications by generating unique keys for each session, making it a critical feature for VPN services.

IBM Cloud VPN for VPC: This service utilizes PFS to secure communication between the cloud environment and external networks, ensuring high levels of data protection and encryption.

References from IBM Cloud Professional Architect Materials:

The IBM documentation on IBM Cloud VPN describes PFS as a fundamental security feature for protecting data transmitted over the network.

Other options are incorrect:

A. Passive Peer Detectionis not a security feature.

B. RSA key exchangeis a cryptographic algorithm but does not describe a VPN-specific security feature.

D. Post-shared keyis not a relevant term.

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For storing data for long-term archival purposes with a minimal I/O load and a peak IOPS requirement of 50,Tier 5 storageis the most appropriate choice.

Tier 5 Storage: This storage tier is designed for workloads with low performance and IOPS requirements, such as long-term data archival or infrequently accessed data. Tier 5 offers the lowest cost option and is ideal for scenarios where data is rarely accessed, and there is a minimal input/output operation per second (IOPS) requirement.

Workload Suitability: Given that the workload described involves minimal I/O load and a peak IOPS requirement of 50, Tier 5 provides an optimal balance between cost and the minimal performance needed for such an archival workload.

References from IBM Cloud Professional Architect Materials:

IBM documentation on IBM Cloud Storage Tiers indicates that Tier 5 storage is suitable for long-term data storage and archival, where performance requirements are minimal.

Other options are incorrect:

B. Tier 2 storage,C. Tier 3 storage, andD. Tier 1 storageprovide higher performance than necessary for the described archival workload, resulting in potentially unnecessary costs.

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For data with unpredictable usage patterns, the architect should select theSmart Tierstorage class.

Smart Tier Storage Class: This is designed for workloads with changing or unpredictable access patterns. It automatically moves data between different cost-performance tiers based on access patterns, providing cost-efficiency and optimal performance without requiring manual intervention.

Unpredictable Usage Patterns: Smart Tier is particularly beneficial when the usage patterns of data are not consistent, as it dynamically adjusts the storage tier to ensure the most efficient use of resources.

References from IBM Cloud Professional Architect Materials:

IBM's documentation on IBM Cloud Object Storage Classes describes Smart Tier as the recommended choice for data with unpredictable access patterns.

Other options are incorrect:

A. Standardis for frequently accessed data.

C. VaultandD. Cold Vaultare for infrequently accessed data, not suitable for unpredictable usage.

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An IBM Cloud Virtual Private Endpoint (VPE) provides a connection point from a Virtual Private Cloud (VPC) to other IBM Cloud services. This allows secure, private communication between resources within a VPC and IBM Cloud services without traversing the public internet, enhancing security and performance.

What is a Virtual Private Endpoint?VPE is a mechanism that enables private connections from a VPC to supported IBM Cloud services such as databases, object storage, and others. It eliminates the need for public IP addresses and reduces the exposure to potential attacks over the public internet.

Why This Option Describes VPE:It clearly explains that VPE is for connecting VPC resources to other IBM Cloud services, fitting the purpose of secure, internal cloud communication.

Comparison with Other Options:

A (Classic to microservices), C (VPC to on-premises), D (Classic to on-premises):None accurately describe the function of a Virtual Private Endpoint in IBM Cloud.

References:

IBM Cloud VPC Virtual Private Endpoints Documentation

IBM Cloud Networking Services

IBM Cloud Architect Exam Study Guide

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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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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)andPower (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.

References:

IBM Cloud Bare Metal Servers

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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cloud-initis a widely used tool in IBM Cloud for initializing virtual server instances (VSIs) with user data. It allows users to provide configuration instructions or scripts that are executed when a new virtual server is created.cloud-initis highly versatile and supports a variety of use cases, such as installing software packages, setting up the environment, and managing users.

What iscloud-init?It is a standard method for cloud instance initialization in many cloud environments, including IBM Cloud.cloud-initreads the user data provided during the instance's launch and executes the required configurations, allowing for automated setup and customization.

Why usecloud-init?It enables users to automate the bootstrapping process of virtual servers by defining configurations that can range from simple commands to complex scripts. This reduces manual intervention, saves time, and ensures consistency in server setups.

Relationship with Other Options:

cloud-config (B)is a YAML file format used bycloud-initfor providing configuration details. However, the termcloud-initrefers to the actual tool used to process the user data.

server-config (C)anduser-data (D)are not specific tools but terms that might describe parts of thecloud-initprocess.

References:

IBM Cloud Virtual Servers Documentation

IBM Cloud Architect Exam Study Guide

cloud-init Official Documentation

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The best IBM Cloud Object Storage resiliency option for a use case where data must remain in-country and locally restricted isSingle Data Center.

Single Data Center: This option ensures that all data is stored within a single geographic location, which complies with regulations or requirements that mandate data residency within a specific country. By using a single data center, the data remains locally restricted.

Data Residency Requirements: When an application has strict regulatory or compliance requirements that specify data must not leave the country, the Single Data Center option ensures that data does not cross geographic boundaries.

References from IBM Cloud Professional Architect Materials:

IBM documentation on IBM Cloud Object Storage Resiliency Options states that the Single Data Center option is best suited for scenarios where data residency is a concern.

Other options are incorrect:

A. Cross Zone,C. Cross Region, andD. Multizoneinvolve data being stored across multiple locations or regions, which would not meet the requirement of keeping the data locally restricted.

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IBM Cloud follows theFedRAMP (Federal Risk and Authorization Management Program)to ensure its services meet the security and compliance standards of the US government.

FedRAMP: It is a U.S. government-wide program that provides a standardized approach to security assessment, authorization, and continuous monitoring for cloud products and services. FedRAMP authorization is mandatory for any cloud services used by federal agencies, ensuring they meet strict security requirements.

IBM Cloud Compliance: IBM Cloud adheres to FedRAMP standards to provide its services to government agencies, ensuring that its cloud solutions meet stringent security and compliance requirements, as documented in IBM's FedRAMP Certification.

Why Other Options are Incorrect:

A. CIS (Center for Internet Security)andB. NIST (National Institute of Standards and Technology)are frameworks and standards organizations but not specific programs like FedRAMP.

D. FIPS (Federal Information Processing Standards)defines security and interoperability standards but does not pertain to the overall authorization of cloud services.

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