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Juniper Cloud, Associate (JNCIA-Cloud) Sample Questions (Q57-Q62):

NEW QUESTION # 57
Which two statements describe a multitenant cloud? (Choose two.)

A. Multiple customers of a cloud vendor have access to their own dedicated hardware.
B. Tenants are aware of other tenants using their shared resources.
C. Servers, network, and storage are separated per tenant.
D. The entities of each tenant are isolated from one another.

Answer: A,D

Explanation:
A multitenant cloud is a cloud architecture where multiple customers (tenants) share the same physical infrastructure or platform while maintaining logical isolation. Let's analyze each statement:
A . Tenants are aware of other tenants using their shared resources.
Incorrect: In a multitenant cloud, tenants are logically isolated from one another. While they may share underlying physical resources (e.g., servers, storage), they are unaware of other tenants and cannot access their data or applications. This isolation ensures security and privacy.
B . Servers, network, and storage are separated per tenant.
Incorrect: In a multitenant cloud, resources such as servers, network, and storage are shared among tenants. The separation is logical, not physical. For example, virtualization technologies like hypervisors and software-defined networking (SDN) are used to create isolated environments for each tenant.
C . The entities of each tenant are isolated from one another.
Correct: Logical isolation is a fundamental characteristic of multitenancy. Each tenant's data, applications, and configurations are isolated to prevent unauthorized access or interference. Technologies like virtual private clouds (VPCs) and network segmentation ensure this isolation.
D . Multiple customers of a cloud vendor have access to their own dedicated hardware.
Correct: While multitenancy typically involves shared resources, some cloud vendors offer dedicated hardware options for customers with strict compliance or performance requirements. For example, AWS offers "Dedicated Instances" or "Dedicated Hosts," which provide dedicated physical servers for specific tenants within a multitenant environment.
JNCIA Cloud Reference:
The Juniper Networks Certified Associate - Cloud (JNCIA-Cloud) curriculum discusses multitenancy as a key feature of cloud computing. Multitenancy enables efficient resource utilization and cost savings by allowing multiple tenants to share infrastructure while maintaining isolation.
For example, Juniper Contrail supports multitenancy by providing features like VPCs, network overlays, and tenant isolation. These capabilities ensure that each tenant has a secure and independent environment within a shared infrastructure.
Reference:
NIST Cloud Computing Reference Architecture
Juniper JNCIA-Cloud Study Guide: Multitenancy

NEW QUESTION # 58
You want to limit the memory, CPU, and network utilization of a set of processes running on a Linux host.
Which Linux feature would you configure in this scenario?

A. virtual routing and forwarding instances
B. network namespaces
C. control groups
D. slicing

Answer: C

Explanation:
Control groups (cgroups) is a Linux kernel feature that limits, accounts for, and isolates the CPU, memory, disk I/O, and network usage of one or more processes. It allows you to allocate resources among user-defined groups of processes running on a system. You can monitor the groups of processes, deny the groups of processes access to certain resources, or even freeze groups of processes.

NEW QUESTION # 59
You have built a Kubernetes environment offering virtual machine hosting using KubeVirt.
Which type of service have you created in this scenario?

A. Infrastructure as a Service (laaS)
B. Bare Metal as a Service (BMaaS)
C. Software as a Service (Saa
D. Platform as a Service (Paa

Answer: A

Explanation:
Kubernetes combined with KubeVirt enables the hosting of virtual machines (VMs) alongside containerized workloads. This setup aligns with a specific cloud service model. Let's analyze each option:
A . Software as a Service (SaaS)
Incorrect: SaaS delivers fully functional applications over the internet, such as Salesforce or Google Workspace. Hosting VMs using Kubernetes and KubeVirt does not fall under this category.
B . Platform as a Service (PaaS)
Incorrect: PaaS provides a platform for developers to build, deploy, and manage applications without worrying about the underlying infrastructure. While Kubernetes itself can be considered a PaaS component, hosting VMs goes beyond this model.
C . Infrastructure as a Service (IaaS)
Correct: IaaS provides virtualized computing resources such as servers, storage, and networking over the internet. By hosting VMs using Kubernetes and KubeVirt, you are offering infrastructure-level services, which aligns with the IaaS model.
D . Bare Metal as a Service (BMaaS)
Incorrect: BMaaS provides direct access to physical servers without virtualization. Kubernetes and KubeVirt focus on virtualized environments, making this option incorrect.
Why IaaS?
Virtualized Resources: Hosting VMs using Kubernetes and KubeVirt provides virtualized infrastructure, which is the hallmark of IaaS.
Scalability and Flexibility: Users can provision and manage VMs on-demand, similar to traditional IaaS offerings like AWS EC2 or OpenStack.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes understanding cloud service models, including IaaS. Recognizing how Kubernetes and KubeVirt fit into the IaaS paradigm is essential for designing hybrid cloud solutions.
For example, Juniper Contrail integrates with Kubernetes and KubeVirt to provide advanced networking and security features for IaaS-like environments.
Reference:
KubeVirt Documentation
Juniper JNCIA-Cloud Study Guide: Cloud Service Models

NEW QUESTION # 60
You are asked to provision a bare-metal server using OpenStack.
Which service is required to satisfy this requirement?

A. Trove
B. Zun
C. Magnum
D. Ironic

Answer: D

Explanation:
OpenStack is an open-source cloud computing platform that provides various services for managing compute, storage, and networking resources. To provision a bare-metal server in OpenStack, the Ironic service is required. Let's analyze each option:
A . Ironic
Correct: OpenStack Ironic is a bare-metal provisioning service that allows you to manage and provision physical servers as if they were virtual machines. It automates tasks such as hardware discovery, configuration, and deployment of operating systems on bare-metal servers.
B . Zun
Incorrect: OpenStack Zun is a container service that manages the lifecycle of containers. It is unrelated to bare-metal provisioning.
C . Trove
Incorrect: OpenStack Trove is a Database as a Service (DBaaS) solution that provides managed database instances. It does not handle bare-metal provisioning.
D . Magnum
Incorrect: OpenStack Magnum is a container orchestration service that supports Kubernetes, Docker Swarm, and other container orchestration engines. It is focused on containerized workloads, not bare-metal servers.
Why Ironic?
Purpose-Built for Bare-Metal: Ironic is specifically designed to provision and manage bare-metal servers, making it the correct choice for this requirement.
Automation: Ironic automates the entire bare-metal provisioning process, including hardware discovery, configuration, and OS deployment.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers OpenStack as part of its cloud infrastructure curriculum. Understanding OpenStack services like Ironic is essential for managing bare-metal and virtualized environments in cloud deployments.
For example, Juniper Contrail integrates with OpenStack to provide networking and security for both virtualized and bare-metal workloads. Proficiency with OpenStack services ensures efficient management of diverse cloud resources.
Reference:
OpenStack Documentation: Ironic Bare-Metal Provisioning
Juniper JNCIA-Cloud Study Guide: OpenStack Services

NEW QUESTION # 61
Regarding the third-party CNI in OpenShift, which statement is correct?

A. In OpenShift, you must specify the third-party CNI to be installed during the initial cluster deployment.
B. OpenShift does not support third-party CNIs.
C. In OpenShift, you can have multiple third-party CNIs installed simultaneously.
D. In OpenShift, you can remove and install a third-party CNI after the cluster has been deployed.

Answer: A

Explanation:
OpenShift supports third-party Container Network Interfaces (CNIs) to provide advanced networking capabilities. However, there are specific requirements and limitations when using third-party CNIs. Let's analyze each statement:
A . In OpenShift, you can remove and install a third-party CNI after the cluster has been deployed.
Incorrect:
OpenShift does not allow you to change or replace the CNI plugin after the cluster has been deployed. The CNI plugin must be specified during the initial deployment.
B . In OpenShift, you must specify the third-party CNI to be installed during the initial cluster deployment.
Correct:
OpenShift requires you to select and configure the desired CNI plugin (e.g., Calico, Cilium) during the initial cluster deployment. Once the cluster is deployed, changing the CNI plugin is not supported.
C . OpenShift does not support third-party CNIs.
Incorrect:
OpenShift supports third-party CNIs as alternatives to the default SDN (Software-Defined Networking) solution. This flexibility allows users to choose the best networking solution for their environment.
D . In OpenShift, you can have multiple third-party CNIs installed simultaneously.
Incorrect:
OpenShift does not support running multiple CNIs simultaneously. Only one CNI plugin can be active at a time, whether it is the default SDN or a third-party CNI.
Why This Statement?
Initial Configuration Requirement: OpenShift enforces the selection of a CNI plugin during the initial deployment to ensure consistent and stable networking across the cluster.
Stability and Compatibility: Changing the CNI plugin after deployment could lead to network inconsistencies and compatibility issues, which is why it is not allowed.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers OpenShift networking, including the use of third-party CNIs. Understanding the limitations and requirements for CNI plugins is essential for deploying and managing OpenShift clusters effectively.
For example, Juniper Contrail can be integrated as a third-party CNI in OpenShift to provide advanced networking and security features, but it must be specified during the initial deployment.
Reference:
OpenShift Documentation: Third-Party CNIs
Juniper JNCIA-Cloud Study Guide: OpenShift Networking

NEW QUESTION # 62
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