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NEW QUESTION # 40
Which two statements about overlay virtual networks are true? (Choose two.)
- A. Overlay virtual networks allow both Layer 2 and Layer 3 communication.
- B. Overlay virtual networks only allow Layer 3 communication.
- C. Overlay virtual networks work well on an IP spine-and-leaf topology.
- D. Overlay virtual networks use Juniper proprietary protocols.
Answer: A,C
Explanation:
Explanation
Overlay virtual networks are virtual logical networks constructed on top of an existing network using network virtualization technologies45. They decouple network services from the physical networking and interconnection technologies on the underlay network45. Two true statements about overlay virtual networks are:
Overlay virtual networks work well on an IP spine-and-leaf topology6. They can be created over underlay networks using network virtualization technologies4.
Overlay virtual networks allow both Layer 2 and Layer 3 communication65. They can serve not only different services (such as multiple departments) of the same tenant but also different tenants4.
References from Juniper site: Microsoft Learn, Huawei IP Encyclopedia, Network Insight
NEW QUESTION # 41
You have started a container in Docker, made configuration changes to it, and stopped the container. You notice the next time that you execute the docker run command, the changes have not persisted.
What is the problem?
- A. The docker load command must be used to persist the change.
- B. The docker run command starts a new copy of the container, not the existing version.
- C. The docker exec command needs to be run first to save and exit the running container.
- D. Docker images need to be recompiled to make any changes.
Answer: B
Explanation:
Explanation
Docker containers are designed to be ephemeral, meaning they run based on their current configuration. When a Docker container is stopped, it does not automatically save changes made during its runtime. When you execute docker run, it starts a new instance of the container, not an existing version with its changes[14-16]. If you want to persist changes between runs, you need to commit changes to a new Docker image or use Docker volumes for data persistence[14-16]. References from Juniper site: Stack Overflow, Docker Docs
NEW QUESTION # 42
In OpenShift, which node type is used to host your application containers?
- A. control plane node
- B. full node
- C. worker node
- D. miner node
Answer: C
Explanation:
Explanation
In OpenShift, the worker node is used to host your application containers1. Worker nodes are where all your coding adventures happen, and they can be virtual or physical1. References from Juniper site: IBM Developer
NEW QUESTION # 43
Which two statements are true about the CN2 controller? (Choose two.)
- A. A CN2 controller communicates with CN2 vRouters using BGP.
- B. A CN2 controller communicates with other CN2 controllers using XMPP.
- C. A CN2 controller communicates with CN2 vRouters using XMPP.
- D. A CN2 controller communicates with other CN2 controllers using BGP.
Answer: C,D
Explanation:
Explanation
A CN2 controller communicates with CN2 vRouters using XMPP (Extensible Messaging and Presence Protocol) and with other CN2 controllers using BGP (Border Gateway Protocol). XMPP is used for control plane communication, while BGP is used for routing updates between controllers.
NEW QUESTION # 44
What is the most privileged protection ring?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
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 # 45
Click the Exhibit button.
You apply the manifest file shown in the exhibit.
Which two statements are correct in this scenario? (Choose two.)
- A. This manifest is used to create a
- B. Four pods are created as a result of applying this manifest.
- C. This manifest is used to create a deployment.
- D. The created pods are receiving traffic on port 80.
Answer: B,C
Explanation:
Explanation
This manifest is used to create a deployment, which is a Kubernetes resource that manages a set of pods with the same configuration. A deployment can also provide declarative updates, scaling, and rolling back for the pods. The created pods are not receiving traffic on port 80, because the manifest does not specify a service or a selector for the deployment. A service is another Kubernetes resource that defines a logical set of pods and a policy to access them. A selector is a label query that matches the pods that belong to the service. Four pods are created as a result of applying this manifest, because the manifest specifies replicas: 4 in the spec section of the deployment
NEW QUESTION # 46
Which virtualization method requires less duplication of hardware resources?
- A. paravirtualization
- B. hardware-assisted virtualization
- C. OS-level virtualization
- D. full virtualization
Answer: C
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 # 47
What are the two characteristics of the Network Functions Virtualization (NFV) framework? (Choose two.)
- A. It decouples the network software from the hardware.
- B. It decouples the network control plane from the forwarding plane.
- C. It implements virtualized tunnel endpoints.
- D. It implements virtualized network functions
Answer: A,D
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 # 48
You want to quickly assign a specific combination of permissions to a set of users.
In this scenario, which OpenStack object should you create?
- A. role
- B. project
- C. image
- D. flavor
Answer: A
Explanation:
Explanation
In OpenStack, a role is a set of permissions that determines what actions users can perform in a given context.
Roles are assigned to user-project pairs. If you want to quickly assign a specific combination of permissions to a set of users, you should create a role1. References from Juniper site: OpenStack Docs
NEW QUESTION # 49
What are two available installation methods for an OpenShift cluster? (Choose two.)
- A. user-provisioned infrastructure
- B. installer-provisioned infrastructure
- C. kubesprav
- D. kubeadm
Answer: A,B
Explanation:
Explanation
There are two available installation methods for an OpenShift cluster. One is the installer-provisioned infrastructure method56, and the other is the user-provisioned infrastructure method56. References from Juniper site: VMware NSX Container Plugin, OpenShift Container Platform 4.10 Documentation
NEW QUESTION # 50
Which two tools are used to deploy a Kubernetes environment for testing and development purposes? (Choose two.)
- A. minikube
- B. kind
- C. oc
- D. OpenStack
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 # 51
Juniper Cloud-Native Contrail Networking (CN2) is able to be integrated with which orchestrator?
- A. Marathon
- B. Mesosphere
- C. Kubernetes
- D. CloudStack
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 # 52
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:
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 # 53
Which virtualization method requires less duplication of hardware resources?
- A. paravirtualization
- B. hardware-assisted virtualization
- C. OS-level virtualization
- D. full virtualization
Answer: C
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 # 54
Which term identifies to which network a virtual machine interface is connected?
- A. machine access control (MAC)
- B. virtual tunnel endpoint (VTEP)
- C. virtual network ID (VNID)
- D. Virtual Extensible LAN (VXLAN)
Answer: C
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 # 55
You are deploying CN2 using Kubernetes as your orchestrator.
In this scenario, which component contains the vRouter agent?
- A. kube-manager
- B. Contrail controller
- C. worker node
- D. Ikube-scheduler
Answer: C
Explanation:
Explanation
In a CN2 deployment using Kubernetes as the orchestrator, the vRouter agent is contained in the worker node.
The vRouter agent is responsible for managing the forwarding plane on each node in a Contrail cluster. It interacts with the kernel to manage the services and interfaces within the virtual networks.
NEW QUESTION # 56
Which two statements are true about virtual networks? (Choose two.)
- A. Virtual networks are limited to a single device.
- B. Virtual networks are available on common Linux distributions.
- C. Virtual networks are able to span multiple devices.
- D. Virtual networks are available only as part of a cloud orchestration system.
Answer: B,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 # 57
What is the name of the Docker container runtime?
- A. containerd
- B. docker cl
- C. cri-o
- D. dockerd
Answer: A
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 # 58
What are the two primary ways used to manage objects by kubectl? (Choose two.)
- A. declarative object configuration
- B. imperative commands
- C. declarative commands
- D. imperative object commands
Answer: A,B
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 # 59
Which two Linux commands would you use to show the amount of RAM in your system? (Choose two.)
- A. cat /proc/meminto
- B. df -h
- C. free -h
- D. cat /proc/cpuinfo
Answer: A,C
Explanation:
Explanation
he free -h command in Linux displays the total amount of free and used physical and swap memory in the system, as well as the buffers used by the kernel89. The cat /proc/meminfo command displays real-time information about the system's memory usage as well as the buffers and shared memory used by the kernel1
NEW QUESTION # 60
What are two Kubernetes objects? (Choose two.)
- A. namespace
- B. cluster
- C. service
- D. pod
Answer: C,D
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 # 61
You are asked to run a container in a Kubernetes environment.
What should you do to accomplish this task?
- A. Create a WYSYG definition for the container and its resources.
- B. Create a JINJA2 template for the container and its resources.
- C. Define a YAML manifest for the container and its resources.
- D. Define an XML configuration for the container and its resources.
Answer: C
Explanation:
Explanation
To run a container in a Kubernetes environment, you should define a YAML manifest for the container and its resources2. YAML manifests are used to define Kubernetes objects, such as pods or services. These manifests describe the desired state of the system2.
NEW QUESTION # 62
You must provide tunneling in the overlay that supports multipath capabilities.
Which two protocols provide this function? (Choose two.)
- A. VXLAN
- B. VPN
- C. MPLSoGRE
- D. MPLSoUDP
Answer: A,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 # 63
What are two characteristics of the OpenShift Assisted Installer? (Choose two.)
- A. It provides full feature support and customizations.
- B. It uses one of the control plane nodes as a bootstrap node.
- C. It does not support bare-metal deployments.
- D. It offers REST APIs for the configuration and installation
Answer: B,D
Explanation:
Explanation
The OpenShift Assisted Installer uses one of the control plane nodes as a bootstrap node12. It also offers REST APIs for the configuration and installation12.
NEW QUESTION # 64
Which container runtime engine is used by default in OpenShift?
- A. containerd
- B. Docker
- C. runC
- D. cri-o
Answer: D
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 # 65
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