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Juniper Cloud, Associate (JNCIA-Cloud) Sample Questions (Q55-Q60):

NEW QUESTION # 55
You are asked to deploy a Kubernetes application on your cluster. You want to ensure the application, and all of its required resources, can be deployed using a single package, with all install-related variables defined at start time.
Which tool should you use to accomplish this objective?

A. Kubernetes imperative CLI should be used to run the application.
B. A Helm chart should be used for the application.
C. An Ansible playbook should be run for the application.
D. A YAML manifest should be used for the application.

Answer: B

Explanation:
To deploy a Kubernetes application with all its required resources packaged together, a tool that supports templating and variable management is needed. Let's analyze each option:
A . A YAML manifest should be used for the application.
Incorrect:
While YAML manifests are used to define Kubernetes resources, they do not provide a mechanism to package multiple resources or define variables at deployment time. Managing complex applications with plain YAML files can become cumbersome.
B . A Helm chart should be used for the application.
Correct:
Helm is a package manager for Kubernetes that allows you to define, install, and upgrade applications using charts . A Helm chart packages all the required resources (e.g., deployments, services, config maps) into a single unit and allows you to define variables (via values.yaml) that can be customized at deployment time.
C . An Ansible playbook should be run for the application.
Incorrect:
Ansible is an automation tool that can be used to deploy Kubernetes resources, but it is not specifically designed for packaging and deploying Kubernetes applications. Helm is better suited for this purpose.
D . Kubernetes imperative CLI should be used to run the application.
Incorrect:
Using imperative CLI commands (e.g., kubectl create) is not suitable for deploying complex applications. This approach lacks the ability to package resources or define variables, making it error-prone and difficult to manage.
Why Helm?
Packaging: Helm charts bundle all application resources into a single package, simplifying deployment and management.
Customization: Variables defined in values.yaml allow you to customize the deployment without modifying the underlying templates.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes tools for managing Kubernetes applications, including Helm. Understanding how to use Helm charts is essential for deploying and maintaining complex applications in Kubernetes environments.
For example, Juniper Contrail integrates with Kubernetes to provide advanced networking features, ensuring seamless operation of applications deployed via Helm charts.
Reference:
Helm Documentation: Charts
Juniper JNCIA-Cloud Study Guide: Kubernetes Application Management

NEW QUESTION # 56
Which two statements about Kubernetes are correct? (Choose two.)

A. A ClusterlP service exposes pods to internal traffic only.
B. A ClusterlP service exposes pods to internal and external traffic.
C. Each container within a pod has a unique IP address.
D. All containers within a pod share the same IP address.

Answer: A,D

Explanation:
In Kubernetes, all containers within a pod share the same IP address. A ClusterIP service exposes pods to internal traffic only.

NEW QUESTION # 57
Which two statements about containers are true? (Choose two.)

A. Containers package the entire runtime environment of an application, including its dependencies.
B. Containers can only run on a system with a Type 2 hypervisor.
C. Containers share the use of the underlying system's kernel.
D. Containers contain executables, libraries, configuration files, and an operating system.

Answer: A,C

Explanation:
Containers are a lightweight form of virtualization that enable the deployment of applications in isolated environments. Let's analyze each statement:
A . Containers contain executables, libraries, configuration files, and an operating system.
Incorrect: Containers do not include a full operating system. Instead, they share the host system's kernel and only include the application and its dependencies (e.g., libraries, binaries, and configuration files).
B . Containers package the entire runtime environment of an application, including its dependencies.
Correct: Containers bundle the application code, runtime, libraries, and configuration files into a single package. This ensures consistency across different environments and eliminates issues caused by differences in dependencies.
C . Containers can only run on a system with a Type 2 hypervisor.
Incorrect: Containers do not require a hypervisor. They run directly on the host operating system and share the kernel. Hypervisors (Type 1 or Type 2) are used for virtual machines, not containers.
D . Containers share the use of the underlying system's kernel.
Correct: Containers leverage the host operating system's kernel, which allows them to be lightweight and efficient. Each container has its own isolated user space but shares the kernel with other containers.
Why These Statements?
Runtime Environment Packaging: Containers ensure portability and consistency by packaging everything an application needs to run.
Kernel Sharing: By sharing the host kernel, containers consume fewer resources compared to virtual machines, which require separate operating systems.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes understanding containerization technologies, including Docker and Kubernetes. Containers are a fundamental component of modern cloud-native architectures.
For example, Juniper Contrail integrates with Kubernetes to manage containerized workloads, leveraging the lightweight and portable nature of containers.
Reference:
Docker Documentation: Container Basics
Juniper JNCIA-Cloud Study Guide: Containerization

NEW QUESTION # 58
When considering OpenShift and Kubernetes, what are two unique resources of OpenShift? (Choose two.)

A. ingress
B. build
C. routes
D. services

Answer: B,C

Explanation:
OpenShift extends Kubernetes by introducing additional resources and abstractions to simplify application development and deployment. Let's analyze each option:
A . routes
Correct:
Routes are unique to OpenShift and provide a way to expose services externally by mapping a hostname to a service. They are built on top of Kubernetes Ingress but offer additional features like TLS termination and wildcard support.
B . build
Correct:
Builds are unique to OpenShift and represent the process of transforming source code into container images. OpenShift provides build configurations and strategies (e.g., Docker, S2I) to automate this process, which is not natively available in Kubernetes.
C . ingress
Incorrect:
Ingress is a standard Kubernetes resource used to manage external access to services. While OpenShift uses Ingress as the foundation for its Routes, Ingress itself is not unique to OpenShift.
D . services
Incorrect:
Services are a core Kubernetes resource used to expose applications internally within the cluster. They are not unique to OpenShift.
Why These Resources?
Routes: Extend Kubernetes Ingress to provide advanced external access capabilities, such as custom domain mappings and TLS termination.
Builds: Simplify the process of building container images directly within the OpenShift platform, enabling streamlined CI/CD workflows.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers OpenShift's unique resources as part of its curriculum on container orchestration platforms. Understanding the differences between OpenShift and Kubernetes resources is essential for leveraging OpenShift's full capabilities.
For example, Juniper Contrail integrates with OpenShift to provide advanced networking features, ensuring secure and efficient traffic routing for Routes and Builds.
Reference:
OpenShift Documentation: Routes and Builds
Juniper JNCIA-Cloud Study Guide: OpenShift vs. Kubernetes

NEW QUESTION # 59
Which two features are provided by CN2? (Choose two.)

A. role-based access control
B. application firewall
C. isolated namespaces
D. user-defined virtual networks

Answer: C,D

Explanation:
According to the CN2 datasheet, CN2 supports "multiple isolated namespaces for each tenant, allowing for overlapping IP addresses among tenants" and "user-defined virtual networks that can span across clusters, regions, and clouds". Other features of CN2 include cloud-native networking, NetOps-driven automation, edge and remote compute, enhanced observability, and ultra-fast, high performance.

NEW QUESTION # 60
......

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