Cloud Platform Solutions (D338)

Correct Answer

A. Balanced CPU to memory

Explanation

The general-purpose virtual machine (VM) type in Azure is designed to offer a balanced ratio of CPU to memory, making it suitable for a wide range of applications. These VMs are versatile and optimized for tasks that require a balance between processing power and memory, such as development environments, small to medium databases, and web servers.

Why other options are wrong

B. High disk throughput

This option refers more to specialized VM types such as those optimized for storage or disk-intensive workloads. General-purpose VMs are not specifically designed for high disk throughput but rather for balancing CPU and memory.

C. High memory to CPU

High memory-to-CPU ratios are found in specialized VM types for memory-intensive applications, such as large in-memory databases or caching. General-purpose VMs offer a more balanced ratio between CPU and memory, not high memory relative to CPU.

D. Balanced storage throughput

Balanced storage throughput is a feature of certain VM types that focus on I/O-intensive tasks, but it is not the defining feature of general-purpose VMs. General-purpose VMs prioritize balance between CPU and memory rather than storage throughput.

Correct Answer

A. Management group

Explanation

The highest scope level for role-based access control (RBAC) role assignments in Azure is the management group. Management groups allow you to organize and manage access, policies, and compliance across multiple subscriptions. Assigning roles at the management group level grants access to all resources within the group and its associated subscriptions.

Why other options are wrong

B. Resource group

A resource group is a container for Azure resources and can be used as a scope for RBAC assignments, but it is not the highest level. It is more granular compared to a management group.

C. Subscription

A subscription is a logical unit of Azure services, and RBAC roles can be assigned at the subscription level. However, management groups are a higher-level scope that can span multiple subscriptions.

D. Owner

Owner is a role, not a scope. The Owner role provides full access to all resources within a scope but is not a scope itself. The highest scope for RBAC assignments is the management group.

Correct Answer

B. JavaScript Object Notation (JSON)

Explanation

In Azure, custom roles and permission definitions are created using JavaScript Object Notation (JSON). JSON is a widely used format for defining roles, including specifying the permissions and the scope of the role. Azure uses JSON templates to define custom roles and apply them within the Azure environment.

Why other options are wrong

A. Ruby

Ruby is a programming language and not used for defining Azure custom roles. JSON is the standard format for role definitions, not Ruby.

C. Python

Python is another programming language, but it is not used to define custom roles in Azure. JSON is the accepted format for creating and configuring Azure roles and permissions.

D. Yet Another Markup Language (YAML)

YAML is a human-readable data serialization language, but Azure uses JSON specifically for defining custom roles, not YAML.

Correct Answer

d) Serverless computing, because it allows automatic scaling without server management.

Explanation

Serverless computing is the best choice for startups that need their application to scale quickly based on demand. With serverless computing, the infrastructure management is completely abstracted away, and the application can scale automatically depending on the load, allowing the startup to focus solely on development and reducing operational overhead. It’s cost-effective as the company only pays for the resources it actually uses, making it ideal for applications with variable or unpredictable demand.

Why other options are wrong

a) IaaS, because it provides complete control over the infrastructure

While IaaS offers control over infrastructure, it still requires the startup to manage and scale the virtual machines and servers. This increases complexity, which is not ideal for a startup that wants to focus on building the application without managing infrastructure.

b) PaaS, because it simplifies application development and deployment

PaaS provides a good level of abstraction for application development and deployment but doesn’t offer the automatic scaling capabilities and cost-efficiency that serverless computing provides, especially when the application needs to scale quickly and efficiently.

c) SaaS, because it offers ready-to-use applications without development

SaaS provides pre-built applications and is not suitable for custom application development, which is required by the startup. It’s geared toward end-users rather than developers.

Correct Answer

B. Storage account and at least one folder

Explanation

To upload files to an SMB 3.0 file share in Azure, a storage account must be created first, followed by the creation of an Azure File Share within that account. While the file share itself can contain folders, it is the storage account and the file share (which may include folders) that enable uploading. This setup provides a fully managed file share in the cloud that can be mounted using the SMB protocol.

Why other options are wrong

A. Storage account and a blob container

Blob containers are part of Azure Blob Storage, which is different from Azure File Storage. SMB 3.0 is supported by Azure File Shares, not Blob Storage, so this setup would not enable SMB-based access.

C. Blob container and at least one folder

This option also refers to Blob Storage, which does not support SMB protocol. Even if folders exist in a blob container, they are virtual and unrelated to SMB file sharing capabilities.

D. Blob container and Azure File Sync

Azure File Sync is used to synchronize on-premises file servers with Azure File Shares but does not apply to blob containers. Blob containers are not compatible with SMB 3.0 or File Sync operations.

Correct Answer

A. Get-AzRoleDefinition

Explanation

The Get-AzRoleDefinition cmdlet is used to retrieve the definitions of roles, including custom roles, within an Azure subscription. This cmdlet allows administrators to view all available role definitions, including both built-in and custom roles, providing insight into what permissions are available.

Why other options are wrong

B. Set-AzRoleDefinition

The Set-AzRoleDefinition cmdlet is used to create or update custom role definitions, not to list them. It is used for defining new roles or modifying existing ones, not for retrieving a list of available roles.

C. Get-AzRoleAssignment

The Get-AzRoleAssignment cmdlet is used to list the role assignments for a specific user or service principal, not to list available role definitions. This cmdlet provides details about who has been assigned which roles but does not show the available roles themselves.

D. Set-AzRoleAssignment

The Set-AzRoleAssignment cmdlet is used to assign a specific role to a user, group, or service principal. It does not retrieve the list of available roles. It is used to manage role assignments, not to list available roles.

Correct Answer

b) Google App Engine, because it automatically scales based on demand.

Explanation

Google App Engine (GAE) is a Platform-as-a-Service (PaaS) offering that automatically scales applications based on incoming traffic. This allows the company to focus on developing the application without having to worry about manually provisioning or managing infrastructure. GAE automatically adjusts resources to meet demand, making it an ideal choice for scalable web applications.

Why other options are wrong

a) Compute Engine, because it allows full control over virtual machines

Compute Engine provides virtual machines (VMs), which require manual scaling and management. While VMs offer full control over infrastructure, they do not automatically scale based on traffic. This requires more administrative effort compared to App Engine.

c) Kubernetes Engine, because it manages containerized applications

While Kubernetes Engine is great for container orchestration, it still requires more management compared to GAE. It is better suited for containerized applications with complex scaling needs, but it requires setting up and managing Kubernetes clusters, which may be overkill for simpler web apps.

d) Cloud Functions, because it executes code in response to events

Cloud Functions is a serverless offering that scales automatically, but it is designed for event-driven functions rather than managing full web applications. It’s more suited for backend tasks like processing events or responding to HTTP requests, not hosting a web application.

Correct Answer

B: API Management

Explanation

Google Cloud Endpoints is a fully managed service for creating, deploying, and managing APIs. It is designed to help developers manage the entire lifecycle of APIs, from defining them to monitoring and securing them. This service enables organizations to efficiently handle API traffic and enforce security policies across APIs.

Why other options are wrong

A: DNS Management

DNS management is not the primary function of Google Cloud Endpoints. DNS services are handled by services such as Google Cloud DNS, which is dedicated to managing DNS records.

C: Networking Isolation

Networking isolation refers to controlling and segregating network traffic, which is typically handled by Google Cloud VPC (Virtual Private Cloud) or services like Google Cloud Firewalls, not Cloud Endpoints.

D: Data Transfer

Data transfer refers to the movement of data across networks, which is managed by services like Google Cloud Storage or Cloud Pub/Sub for messaging, not Cloud Endpoints, which focuses specifically on API management.

Correct Answer

B. A configuration with 64 processor cores and 16TB of storage.

Explanation

A configuration with 64 processor cores and 16TB of storage provides the best scalability to handle significant increases in user traffic and data volume. The combination of more processor cores and higher storage capacity ensures that the system can handle both the increased data processing and storage requirements effectively, maintaining optimal performance under heavy load.

Why other options are wrong

A. A configuration with 32 processor cores and 10TB of storage.

Although this configuration offers a decent amount of processor cores and storage, it may not be sufficient for a significant increase in traffic and data volume. A higher number of cores and more storage are typically needed for such scalability.

C. A configuration with 16 processor cores and 5TB of storage.

This configuration is the least capable of handling the anticipated increase in traffic and data volume. The combination of fewer processor cores and limited storage would likely result in performance bottlenecks under heavy loads.

D. A configuration with 32 processor cores and 5TB of storage.

While this configuration provides more cores than option C, it still lacks the storage capacity and might struggle to handle the anticipated increase in data volume effectively. A larger storage capacity, combined with more processor cores, is necessary for optimal performance in this scenario.