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Best Quality Juniper JN0-213 Exam Questions
Passing the JN0-213 certification exam is a great achievement for IT professionals who want to demonstrate their expertise in cloud networking technologies. Cloud, Associate (JNCIA-Cloud) certification provides a strong foundation for individuals who want to pursue advanced certifications in cloud networking, such as the Juniper JNCIS-Cloud or JNCIP-Cloud certifications. It also opens up new career opportunities, such as cloud network engineer, cloud solutions architect, and cloud consultant roles.
NEW QUESTION # 11
Which virtualization technique is used by containers?
- A. hardware-assisted virtualization
- B. paravirtualization
- C. full visualization
- D. OS-level virtualization
Answer: D
Explanation:
Explanation
This technique allows multiple isolated user-space instances to be created by the host operating system. Unlike full virtualization, where the entire system's hardware is emulated, OS-level virtualization shares the host's operating system kernel but isolates the application processes12.
NEW QUESTION # 12
Which two statements are correct about Network Functions Virtualization (NFV)? (Choose two.)
- A. The NFV infrastructure (NFVI) is a component of NFV.
- B. The NFV framework is defined by the W3C.
- C. The NFV framework explains how VNFs fits into the whole solution.
- D. The NFV infrastructure (NFVI) is not a component of NFV.
Answer: A,C
Explanation:
Explanation
Network Functions Virtualization (NFV) is a network architecture concept that uses IT virtualization technologies to virtualize entire classes of network node functions into building blocks that may connect or chain together to create communication services3. The NFV framework explains how Virtual Network Functions (VNFs) fit into the whole solution4. The NFV Infrastructure (NFVI) is a component of NFV that consists of the infrastructure components -compute, storage, networking-on a platform to support software4. References from Juniper site: Red Hat, VMware, Wikipedia
NEW QUESTION # 13
Which term identifies to which network a virtual machine interface is connected?
- A. virtual tunnel endpoint (VTEP)
- B. virtual network ID (VNID)
- C. machine access control (MAC)
- D. Virtual Extensible LAN (VXLAN)
Answer: B
Explanation:
Explanation
The term that identifies to which network a virtual machine interface is connected is the virtual network ID (VNID). The VNID is a unique identifier assigned to each virtual network. It is used to differentiate between different virtual networks and to ensure that each virtual machine interface is connected to the correct network.
NEW QUESTION # 14
Which virtualization method requires less duplication of hardware resources?
- A. hardware-assisted virtualization
- B. paravirtualization
- C. full virtualization
- D. OS-level virtualization
Answer: D
Explanation:
Explanation
OS-level virtualization requires less duplication of hardware resources. This method allows multiple instances of an operating system or multiple different operating systems to run on a single physical server, sharing the same hardware resources. This results in more efficient use of hardware resources compared to other virtualization methods such as full virtualization or paravirtualization
NEW QUESTION # 15
What are the two primary ways used to manage objects by kubectl? (Choose two.)
- A. declarative commands
- B. imperative object commands
- C. imperative commands
- D. declarative object configuration
Answer: C,D
Explanation:
Explanation
The two primary ways used to manage objects by kubectl are imperative commands and declarative object configuration10. Imperative commands operate directly on live objects in a cluster. The user provides operations to the kubectl command as arguments or flags10. Declarative object configuration specifies the operation (create, replace, etc.), optional flags and at least one file name. The file specified must contain a full definition of the object in YAML or JSON format10.
NEW QUESTION # 16
What is the most privileged protection ring?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
Explanation
In computer science, hierarchical protection domains, often called protection rings, are mechanisms to protect data and functionality from faults and malicious behavior. Rings are arranged in a hierarchy from most privileged (most trusted, usually numbered zero) to least privileged (least trusted, usually with the highest ring number). On most operating systems, Ring 0 is the level with the most privileges and interacts most directly with the physical hardware12. References from Juniper site: Wikipedia, GeeksforGeeks, Notes
NEW QUESTION # 17
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. control groups
- B. virtual routing and forwarding instances
- C. slicing
- D. network namespaces
Answer: A
Explanation:
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 processes678. 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 # 18
Which two statements are true about virtual networks? (Choose two.)
- A. Virtual networks are available on common Linux distributions.
- B. Virtual networks are available only as part of a cloud orchestration system.
- C. Virtual networks are able to span multiple devices.
- D. Virtual networks are limited to a single device.
Answer: A,C
Explanation:
Explanation
Virtual networks are logical networks that are decoupled from the underlying network hardware. This decoupling allows network administrators to manage their networks independently of the physical network topology. As such, virtual networks can span multiple devices, allowing for a high degree of flexibility and scalability. Furthermore, virtual networks are available on common Linux distributions, allowing for easy deployment and management.
NEW QUESTION # 19
Which two tools are used to deploy a Kubernetes environment for testing and development purposes? (Choose two.)
- A. minikube
- B. kind
- C. OpenStack
- D. oc
Answer: A,B
Explanation:
Explanation
Minikube and kind are two tools that are commonly used to deploy a Kubernetes environment for testing and development purposes3
NEW QUESTION # 20
Your organization has legacy virtual machine workloads that need to be managed within a Kubernetes deployment.
Which Kubernetes add-on would be used to satisfy this requirement?
- A. Romana
- B. ADOT
- C. Canal
- D. KubeVirt
Answer: D
Explanation:
Explanation
KubeVirt is a Kubernetes add-on that allows you to run and manage legacy virtual machine workloads alongside container workloads within a Kubernetes deployment. According to the KubeVirt website, KubeVirt is "a virtual machine management add-on for Kubernetes" that "aims to provide a common ground for virtualization solutions on top of Kubernetes". Other Kubernetes add-ons that are mentioned in the question are Canal, which is a network policy provider that combines Flannel and Calico; ADOT, which is a distribution of the OpenTelemetry Collector that supports tracing and metrics collection for AWS services; and Romana, which is a network and security automation solution that supports multiple network topologies and policies.
NEW QUESTION # 21
What is the name of the Docker container runtime?
- A. dockerd
- B. docker cl
- C. containerd
- D. cri-o
Answer: C
Explanation:
Explanation
The name of the Docker container runtime is containerd, which is a daemon that manages the complete container lifecycle of its host system, from image transfer and storage to container execution and supervision to low-level storage to network attachments and beyond. Dockerd is the Docker daemon that acts as the primary user interface for Docker. Docker cl is not a valid name for any Docker component. Cri-o is another container runtime that implements the Kubernetes Container Runtime Interface (CRI) to enable using OCI (Open Container Initiative) compatible runtimes
NEW QUESTION # 22
Which two statements about Kubernetes are correct? (Choose two.)
- A. A ClusterlP service exposes pods to internal and external traffic.
- B. All containers within a pod share the same IP address.
- C. A ClusterlP service exposes pods to internal traffic only
- D. Each container within a pod has a unique IP address.
Answer: B,C
Explanation:
Explanation
In Kubernetes, all containers within a pod share the same IP address7. A ClusterIP service exposes pods to internal traffic only87. References from Juniper site: IBM, Kubernetes Documentation
NEW QUESTION # 23
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
- A. There are no compute nodes.
- B. There are no projects.
- C. There are no services.
- D. There are no virtual machines.
Answer: D
Explanation:
Explanation
The correct answer is D. There are no virtual machines. Referring to the exhibit, which shows the output of the openstack server list command, we can see that there are no rows in the table, which means that there are no servers (or virtual machines) in the OpenStack environment. The command openstack server list is used to list servers that you can access1. The other statements are incorrect, because the exhibit does not show any information about projects, services, or compute nodes. To list projects, you would use the command openstack project list2. To list services, you would use the command openstack service list2. To list compute nodes, you would use the command openstack compute service list3.
NEW QUESTION # 24
You must provide tunneling in the overlay that supports multipath capabilities.
Which two protocols provide this function? (Choose two.)
- A. MPLSoGRE
- B. VPN
- C. MPLSoUDP
- D. VXLAN
Answer: C,D
Explanation:
Explanation
MPLSoUDP (Multiprotocol Label Switching over User Datagram Protocol) and VXLAN (Virtual Extensible LAN) are two protocols that provide tunneling in the overlay and support multipath capabilities45.
MPLSoUDP is an encapsulation protocol that allows MPLS packets to be encapsulated in UDP packets. VXLAN is a network virtualization technology that attempts to address the scalability problems associated with large cloud computing deployments
NEW QUESTION # 25
Juniper Cloud-Native Contrail Networking (CN2) is able to be integrated with which orchestrator?
- A. Marathon
- B. CloudStack
- C. Kubernetes
- D. Mesosphere
Answer: C
Explanation:
Explanation
Juniper Cloud-Native Contrail Networking (CN2) can be integrated with Kubernetes. CN2 is optimized for Kubernetes-orchestrated environments and can be used to connect, isolate, and secure cloud workloads and services seamlessly across private, public, and hybrid clouds.
NEW QUESTION # 26
Which two functions does CN2 provide? (Choose two.)
- A. It performs SDN functions in an NFV solution.
- B. It provides an orchestration solution for VMs and containers.
- C. It provides enhanced networking capabilities to private clouds.
- D. It provides underlay network management capabilities.
Answer: B,C
Explanation:
Explanation
CN2 (Cranial Nerve II), also known as the optic nerve, controls the special sense of vision. It transmits visual information from the retina to the vision centers of the brain78. Two functions that CN2 provides are:
It provides enhanced networking capabilities to private clouds78. It transmits special afferent impulses of light to the brain and is involved in several reflex arcs related to the ocular system7.
It provides an orchestration solution for VMs and containers78. It is a unique structure that functions as the bridge between the retinal layer of the eyes and the visual cortex of the brain7. References from Juniper site: Kenhub, Geeky Medics
NEW QUESTION # 27
Click the Exhibit button.
Referring to the exhibit, what does port: 8080 represent?
- A. It is the port that is used by the external load balancer.
- B. It is the port that is exposed to clients that are internal to the cluster.
- C. It is the port on which the webapp pod is listening.
- D. It is the port that is exposed to clients that are external to the cluster.
Answer: B
Explanation:
Explanation
In the context of a Kubernetes service, port: 8080 represents the port that is exposed to clients that are internal to the cluster45. This is the stable port the Service exposes inside the cluster - other Pods in the cluster send traffic to this port4. References from Juniper site: Nigel Poulton, Baeldung
NEW QUESTION # 28
You want to view pods with their IP addresses in OpenShift.
Which command would you use to accomplish this task?
- A. oc get pods -o wide
- B. oc get all
- C. oc get pods -o yaml
- D. oc get pods
Answer: A
Explanation:
Explanation
To view pods with their IP addresses in OpenShift, you would use the command oc get pods -o wide23. This command provides additional information such as the IP address and the node where the pod is located23.
References from Juniper site: OpenShift Documentation, Stack Overflow
NEW QUESTION # 29
What is the networking service of OpenStack?
- A. ironic
- B. Neutron
- C. Barbican
- D. Heat
Answer: B
Explanation:
Explanation
OpenStack's networking service is known as Neutron. Neutron provides a scalable, API-driven, web services-based model for network connectivity as a service. It is designed to manage and configure networking services for both simple and complex network topologies. Neutron allows users to create their own networks, control traffic and connect servers and devices to one or multiple networks.
NEW QUESTION # 30
Which container runtime engine is used by default in OpenShift?
- A. runC
- B. containerd
- C. cri-o
- D. Docker
Answer: C
Explanation:
Explanation
The default container runtime engine used by OpenShift is cri-o. CRI-O is an open source, community-driven container engine. Its primary goal is to replace the Docker service as the container engine for Kubernetes implementations, such as OpenShift Container Platform3.
NEW QUESTION # 31
What are the two characteristics of the Network Functions Virtualization (NFV) framework? (Choose two.)
- A. It implements virtualized network functions
- B. It decouples the network software from the hardware.
- C. It implements virtualized tunnel endpoints.
- D. It decouples the network control plane from the forwarding plane.
Answer: A,B
Explanation:
Explanation
The two characteristics of the Network Functions Virtualization (NFV) framework are that it implements virtualized network functions (VNFs) and that it decouples the network software from the hardware. According to the NFV overview by VMware3, NFV is "designed to deliver the network services needed to support an infrastructure totally independent from hardware by decoupling network functions from proprietary purpose-built hardware appliances" and that "the software that provides these network services are known as virtual network functions (VNFs) and run on generic hardware". Other characteristics that are mentioned in the question are related to Software Defined Networking (SDN), not NFV. SDN separates the network control plane from the forwarding plane and implements virtualized tunnel endpoints.
NEW QUESTION # 32
Which OpenStack service provides API client authentication?
- A. Nova
- B. Neutron
- C. iHeat
- D. Keystone
Answer: D
Explanation:
Explanation
Keystone is an OpenStack service that provides API client authentication3456. It provides API client authentication, service discovery, and distributed multi-tenant authorization by implementing OpenStack's Identity API
NEW QUESTION # 33
What are two Kubernetes objects? (Choose two.)
- A. pod
- B. namespace
- C. service
- D. cluster
Answer: A,C
Explanation:
Explanation
In Kubernetes, a Pod is the smallest and simplest unit in the Kubernetes object model that you create or deploy23. A Pod represents processes running on your cluster23. A Service in Kubernetes is an abstraction which defines a logical set of Pods and a policy by which to access them23.
NEW QUESTION # 34
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